Journal of chemical technology and biotechnology最新文献_第4页

Production of NMSBA from the oxidation of NMST by air under the catalysis of sandwich-type polyoxometalate 三明治型多金属氧酸盐催化NMST空气氧化制NMSBA

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-11-03 DOI: 10.1002/jctb.70098

Yu-cheng Jiang, Jun-qi Hai, Xiang-li Long

BACKGROUND

Mesotrione, a key herbicide for weed management and yield improvement in broad-leaved crops including corn, is synthesized with 2-nitro-4-methylsulfonylbenzoic acid (NMSBA) as an important intermediate. The commercial synthesis of NMSBA typically begins with the nitration of 4-methylsulfonyltoluene to form 2-nitro-4-methanesulfonyltoluene (NMST), followed by oxidation with nitric acid. However, the utilization of nitric acid gives rise to severe environmental and ecological concerns due to its corrosive nature and inherent hazards. Consequently, there is an imperative need to develop a sustainable and green oxidation process for the conversion of NMST to NMSBA in order to mitigate the reliance on chemical oxidants and their associated environmental impacts.

RESULTS

The synthesis of NMSBA, a catalytic system composed of Co, Mn, Br and sandwich-type polyoxometalate, has been developed to aid the oxidation of NMST to NMSBA by air. The sandwich-type polyoxometalate (POM) {K₁₀Co_xMn_4−x(H₂O)₂P₂W₁₈O₆₈} was synthesized and the best Co/Mn atomic ratio was determined to be 1.5:2.5. The doping of Ce in the POM as a counter-cationic metal improved the selectivity to NMSBA, and the best Ce/K atomic ratio was determined to be 1:7. The immobilization of {CeK₇Co_1.5Mn_2.5(H₂O)₂P₂W₁₈O₆₈} on activated carbon (AC) not only enhanced the reaction rate and the production of NMSBA but also reduced the amount of POM used. The optimal loading amount of the POM on AC was 20%.

CONCLUSION

Experiments revealed that the catalytic system composed of Co, Mn, Br and {K₁₀Co_1.5Mn_2.5(H₂O)₂P₂W₁₈O₆₈} was superior to the catalytic system consisting of Co, Mn, Br and heteropoly acids H₃PW₁₂O₄₀/H₃PMo₁₂O₄₀. The catalytic performance of {CeK₇Co_1.5Mn_2.5(H₂O)₂P₂ W₁₈O₆₈}/AC exceeded that of H₃PMo₃W₉O₄₀/AC in the production of NMSBA by oxidizing NMST with oxygen. © 2025 Society of Chemical Industry (SCI).

摘要以2-硝基-4-甲基磺酰基苯甲酸（NMSBA）为重要中间体合成了中三酮（Mesotrione），是玉米等阔叶作物除草和增产的关键除草剂。NMSBA的商业合成通常从4-甲基磺酰基甲苯硝化生成2-硝基-4-甲烷磺酰基甲苯（NMST）开始，然后用硝酸氧化。然而，由于硝酸的腐蚀性和固有的危害，它的利用引起了严重的环境和生态问题。因此，迫切需要开发一种可持续的绿色氧化工艺，将NMST转化为NMSBA，以减轻对化学氧化剂的依赖及其相关的环境影响。结果制备了一种由Co、Mn、Br和三明治型多金属氧酸盐组成的NMSBA催化体系，以助NMST被空气氧化为NMSBA。合成了三明治型多金属氧酸盐（POM） {K10CoxMn4−x(H2O)2P2W18O68}，确定了最佳Co/Mn原子比为1.5:2.5。Ce作为反阳离子金属在POM中掺杂，提高了对NMSBA的选择性，Ce/K原子比为1:7为最佳。将{CeK7Co1.5Mn2.5(H2O)2P2W18O68}固定在活性炭（AC）上，不仅提高了反应速率和NMSBA的产量，而且减少了POM的用量。POM在AC上的最佳负载量为20%。结论由Co、Mn、Br和{K10Co1.5Mn2.5(H2O)2P2W18O68}组成的催化体系优于由Co、Mn、Br和杂多酸H3PW12O40/H3PMo12O40组成的催化体系。{CeK7Co1.5Mn2.5(H2O)2P2 W18O68}/AC对NMST氧化制NMSBA的催化性能优于H3PMo3W9O40/AC。©2025化学工业学会（SCI）。

{"title":"Production of NMSBA from the oxidation of NMST by air under the catalysis of sandwich-type polyoxometalate","authors":"Yu-cheng Jiang, Jun-qi Hai, Xiang-li Long","doi":"10.1002/jctb.70098","DOIUrl":"https://doi.org/10.1002/jctb.70098","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Mesotrione, a key herbicide for weed management and yield improvement in broad-leaved crops including corn, is synthesized with 2-nitro-4-methylsulfonylbenzoic acid (NMSBA) as an important intermediate. The commercial synthesis of NMSBA typically begins with the nitration of 4-methylsulfonyltoluene to form 2-nitro-4-methanesulfonyltoluene (NMST), followed by oxidation with nitric acid. However, the utilization of nitric acid gives rise to severe environmental and ecological concerns due to its corrosive nature and inherent hazards. Consequently, there is an imperative need to develop a sustainable and green oxidation process for the conversion of NMST to NMSBA in order to mitigate the reliance on chemical oxidants and their associated environmental impacts.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The synthesis of NMSBA, a catalytic system composed of Co, Mn, Br and sandwich-type polyoxometalate, has been developed to aid the oxidation of NMST to NMSBA by air. The sandwich-type polyoxometalate (POM) {K<sub>10</sub>Co<sub><i>x</i></sub>Mn<sub>4−<i>x</i></sub>(H<sub>2</sub>O)<sub>2</sub>P<sub>2</sub>W<sub>18</sub>O<sub>68</sub>} was synthesized and the best Co/Mn atomic ratio was determined to be 1.5:2.5. The doping of Ce in the POM as a counter-cationic metal improved the selectivity to NMSBA, and the best Ce/K atomic ratio was determined to be 1:7. The immobilization of {CeK<sub>7</sub>Co<sub>1.5</sub>Mn<sub>2.5</sub>(H<sub>2</sub>O)<sub>2</sub>P<sub>2</sub>W<sub>18</sub>O<sub>68</sub>} on activated carbon (AC) not only enhanced the reaction rate and the production of NMSBA but also reduced the amount of POM used. The optimal loading amount of the POM on AC was 20%.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Experiments revealed that the catalytic system composed of Co, Mn, Br and {K<sub>10</sub>Co<sub>1.5</sub>Mn<sub>2.5</sub>(H<sub>2</sub>O)<sub>2</sub>P<sub>2</sub>W<sub>18</sub>O<sub>68</sub>} was superior to the catalytic system consisting of Co, Mn, Br and heteropoly acids H<sub>3</sub>PW<sub>12</sub>O<sub>40</sub>/H<sub>3</sub>PMo<sub>12</sub>O<sub>40</sub>. The catalytic performance of {CeK<sub>7</sub>Co<sub>1.5</sub>Mn<sub>2.5</sub>(H<sub>2</sub>O)<sub>2</sub>P<sub>2</sub> W<sub>18</sub>O<sub>68</sub>}/AC exceeded that of H<sub>3</sub>PMo<sub>3</sub>W<sub>9</sub>O<sub>40</sub>/AC in the production of NMSBA by oxidizing NMST with oxygen. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 2","pages":"324-340"},"PeriodicalIF":2.4,"publicationDate":"2025-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145969567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revolutionizing catalytic nitroarene reduction via manganese and nitrogen co-doped porous carbon with engineered pore architecture 革命性的催化硝基芳烃还原通过锰和氮共掺杂多孔碳与工程孔结构

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-28 DOI: 10.1002/jctb.70092

Tahreem Khan, Muhammad Jamshed Latif, Sarmed Ali, Saba Jamil, Shamsa Bibi, Wajiha Ashfaq, Shanza Rauf Khan

BACKGROUND

Porous carbon (PC) and nitrogen-doped porous carbon (NDPC) were synthesized using a hydrothermal method. Glucose served as the precursor for PC formation through polymerization and carbonization, while urea acted as the nitrogen source for NDPC synthesis. Activation with potassium hydroxide (KOH) created active sites on NDPC, facilitating the incorporation of manganese (Mn) nanoparticles through an adsorption method. Mn-PC and Mn-NDPC were further used for the catalytic reduction of harmful compounds from water.

RESULTS

Various characterization techniques confirmed successful synthesis and modification; for instance, SEM revealed a sheet-like morphology for PC, oval shapes for Mn-PC, and rod/cubic structures for Mn-NDPC. STEM analysis highlighted pore integration with Mn nanoparticles, and EDX confirmed the presence of Mn, C, and O elements. XRD analysis indicated that MnO₂ exhibited high crystallinity with a monoclinic structure, while PC demonstrated lower crystallinity with a triclinic phase. BET analysis showed that Mn-NDPC exhibited a higher surface area compared to Mn-PC. Both Mn-PC and Mn-NDPC were evaluated as catalysts for nitroarene reductions (2-NP, 4-NP, 2,4-DNP, and PA). Key catalytic parameters, including rate constant (kapp), reduction time, percentage reduction, and half-life, were assessed.

CONCLUSION

Mn-NDPC demonstrated superior performance in PA reduction, achieving the highest k_app (0.1405 min⁻¹), the shortest reduction time (50 min), and the lowest half-life (4.9 min), with a slightly lower percentage reduction (89.5%) compared to other nitroarenes. Catalytic efficiency was further investigated using methanol and phenol as quenching agents, highlighting the potential of Mn-NDPC for advanced catalytic applications. © 2025 Society of Chemical Industry (SCI).

采用水热法制备了多孔碳（PC）和掺氮多孔碳（NDPC）。葡萄糖是聚合和碳化生成PC的前体，尿素是合成NDPC的氮源。氢氧化钾（KOH）的活化在NDPC上产生活性位点，促进锰纳米颗粒通过吸附的方式吸附在NDPC上。Mn-PC和Mn-NDPC进一步用于催化还原水中有害化合物。结果多种表征技术证实合成和修饰成功；例如，扫描电镜显示PC为片状结构，Mn-PC为椭圆形结构，Mn-NDPC为棒状/立方结构。STEM分析强调了与Mn纳米颗粒的孔隙整合，EDX证实了Mn、C和O元素的存在。XRD分析表明，MnO2具有高结晶度的单斜相结构，而PC具有低结晶度的三斜相结构。BET分析表明，Mn-NDPC比Mn-PC具有更高的表面积。Mn-PC和Mn-NDPC作为硝基芳烃还原（2- np、4-NP、2,4- dnp和PA）的催化剂进行了评价。主要催化参数包括速率常数（kapp）、还原时间、还原百分比和半衰期。结论Mn-NDPC具有较好的PA还原性能，kapp最高（0.1405 min−1），还原时间最短（50 min），半衰期最短（4.9 min），还原率略低于其他硝基芳烃（89.5%）。以甲醇和苯酚为猝灭剂进一步研究了Mn-NDPC的催化效率，突出了其在高级催化领域的应用潜力。©2025化学工业学会（SCI）。

{"title":"Revolutionizing catalytic nitroarene reduction via manganese and nitrogen co-doped porous carbon with engineered pore architecture","authors":"Tahreem Khan, Muhammad Jamshed Latif, Sarmed Ali, Saba Jamil, Shamsa Bibi, Wajiha Ashfaq, Shanza Rauf Khan","doi":"10.1002/jctb.70092","DOIUrl":"https://doi.org/10.1002/jctb.70092","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Porous carbon (PC) and nitrogen-doped porous carbon (NDPC) were synthesized using a hydrothermal method. Glucose served as the precursor for PC formation through polymerization and carbonization, while urea acted as the nitrogen source for NDPC synthesis. Activation with potassium hydroxide (KOH) created active sites on NDPC, facilitating the incorporation of manganese (Mn) nanoparticles through an adsorption method. Mn-PC and Mn-NDPC were further used for the catalytic reduction of harmful compounds from water.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Various characterization techniques confirmed successful synthesis and modification; for instance, SEM revealed a sheet-like morphology for PC, oval shapes for Mn-PC, and rod/cubic structures for Mn-NDPC. STEM analysis highlighted pore integration with Mn nanoparticles, and EDX confirmed the presence of Mn, C, and O elements. XRD analysis indicated that MnO<sub>2</sub> exhibited high crystallinity with a monoclinic structure, while PC demonstrated lower crystallinity with a triclinic phase. BET analysis showed that Mn-NDPC exhibited a higher surface area compared to Mn-PC. Both Mn-PC and Mn-NDPC were evaluated as catalysts for nitroarene reductions (2-NP, 4-NP, 2,4-DNP, and PA). Key catalytic parameters, including rate constant (kapp), reduction time, percentage reduction, and half-life, were assessed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Mn-NDPC demonstrated superior performance in PA reduction, achieving the highest k<sub>app</sub> (0.1405 min<sup>−1</sup>), the shortest reduction time (50 min), and the lowest half-life (4.9 min), with a slightly lower percentage reduction (89.5%) compared to other nitroarenes. Catalytic efficiency was further investigated using methanol and phenol as quenching agents, highlighting the potential of Mn-NDPC for advanced catalytic applications. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 2","pages":"299-315"},"PeriodicalIF":2.4,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145984001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sodium alginate-based hydrogel loaded with in situ generated magnesium hydroxide was used for the treatment of copper ions in wastewater 采用海藻酸钠基水凝胶负载原位生成的氢氧化镁处理废水中的铜离子

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-28 DOI: 10.1002/jctb.70094

Jiayi Tang, Jianhai Zhao, Wenpu Li, Hongying Yuan, Yongzhi Chi, Zijian Zhang, Jing Wang, Zixuan Xie

BACKGROUND

Copper ion contamination in wastewater presents significant environmental and health challenges. Hydrogels, particularly those with three-dimensional networks based on sodium alginate (SA), are promising adsorbents. This study aimed to develop an enhanced hydrogel adsorbent by crosslinking SA with Ca²⁺ (forming SC hydrogel) and subsequently modifying it via in situ formation of magnesium hydroxide (Mg(OH)₂) to create SC-Mg(OH)₂, specifically targeting efficient Cu²⁺ removal.

RESULTS

The formation mechanism and structure of SC-Mg(OH)₂ were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, Brunauer–Emmett–Teller measurements and X-ray photoelectron spectroscopy. Under optimized conditions (pH = 5, 298.15 K, adsorbent dosage 1 g L⁻¹, initial Cu²⁺ concentration 100 mg L⁻¹, contact time 480 min), the composite hydrogel achieved a high Cu²⁺ removal efficiency of 95.75% and a maximum adsorption capacity of 253.37 mg g⁻¹. The adsorption kinetics conformed to the pseudo-second-order kinetic model (R² = 0.99977). When adsorption reached equilibrium, it fitted the Langmuir isotherm model (R² = 0.99128) with a negative ΔG, which indicated that the reaction involved spontaneous chemical adsorption and monolayer adsorption.

CONCLUSION

The novel SC-Mg(OH)₂ hydrogel, synthesized by in situ loading of Mg(OH)₂ on SC, demonstrates exceptional efficacy for Cu²⁺ adsorption. The high removal efficiency (>95%) and substantial adsorption capacity (253.37 mg g⁻¹) surpass those of many conventional adsorbents. The adsorption process, well characterized by pseudo-second-order kinetics and the Langmuir model, confirms the material's potential. This work presents SC-Mg(OH)₂ as a highly effective and advanced adsorbent, significantly contributing to the development of functional hydrogel materials for remediating heavy metal pollution in wastewater. © 2025 Society of Chemical Industry (SCI).

废水中的铜离子污染对环境和健康构成重大挑战。水凝胶，特别是海藻酸钠（SA）三维网络的水凝胶，是很有前途的吸附剂。本研究旨在开发一种增强型水凝胶吸附剂，通过将SA与Ca2+交联（形成SC水凝胶），然后通过原位形成氢氧化镁（Mg(OH)2）对其进行修饰，形成SC-Mg(OH)2，专门针对高效去除Cu2+。结果利用傅里叶变换红外光谱、扫描电镜、布鲁诺尔-埃米特-泰勒测量和x射线光电子能谱对SC-Mg(OH)2的形成机理和结构进行了表征。在最佳条件（pH = 5, 298.15 K，吸附剂用量1 g L−1，初始Cu2+浓度100 mg L−1，接触时间480 min）下，复合水凝胶对Cu2+的去除率为95.75%，最大吸附量为253.37 mg g−1。吸附动力学符合准二级动力学模型（R2 = 0.99977）。吸附达到平衡时，拟合Langmuir等温线模型（R2 = 0.99128），负ΔG，表明反应涉及自发化学吸附和单层吸附。结论SC-Mg(OH)2水凝胶在SC上原位负载Mg(OH)2合成，具有优异的Cu2+吸附效果。其去除率高达95%，吸附量高达253.37 mg g−1，超过了许多传统吸附剂。拟二级动力学和Langmuir模型很好地表征了吸附过程，证实了材料的潜力。本文介绍了SC-Mg(OH)2作为一种高效、先进的吸附剂，对修复废水中重金属污染的功能水凝胶材料的开发具有重要意义。©2025化学工业学会（SCI）。

{"title":"Sodium alginate-based hydrogel loaded with in situ generated magnesium hydroxide was used for the treatment of copper ions in wastewater","authors":"Jiayi Tang, Jianhai Zhao, Wenpu Li, Hongying Yuan, Yongzhi Chi, Zijian Zhang, Jing Wang, Zixuan Xie","doi":"10.1002/jctb.70094","DOIUrl":"https://doi.org/10.1002/jctb.70094","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Copper ion contamination in wastewater presents significant environmental and health challenges. Hydrogels, particularly those with three-dimensional networks based on sodium alginate (SA), are promising adsorbents. This study aimed to develop an enhanced hydrogel adsorbent by crosslinking SA with Ca<sup>2+</sup> (forming SC hydrogel) and subsequently modifying it via <i>in situ</i> formation of magnesium hydroxide (Mg(OH)<sub>2</sub>) to create SC-Mg(OH)<sub>2</sub>, specifically targeting efficient Cu<sup>2+</sup> removal.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The formation mechanism and structure of SC-Mg(OH)<sub>2</sub> were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, Brunauer–Emmett–Teller measurements and X-ray photoelectron spectroscopy. Under optimized conditions (pH = 5, 298.15 K, adsorbent dosage 1 g L<sup>−1</sup>, initial Cu<sup>2+</sup> concentration 100 mg L<sup>−1</sup>, contact time 480 min), the composite hydrogel achieved a high Cu<sup>2+</sup> removal efficiency of 95.75% and a maximum adsorption capacity of 253.37 mg g<sup>−1</sup>. The adsorption kinetics conformed to the pseudo-second-order kinetic model (<i>R</i><sup>2</sup> = 0.99977). When adsorption reached equilibrium, it fitted the Langmuir isotherm model (<i>R</i><sup>2</sup> = 0.99128) with a negative Δ<i>G</i>, which indicated that the reaction involved spontaneous chemical adsorption and monolayer adsorption.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The novel SC-Mg(OH)<sub>2</sub> hydrogel, synthesized by <i>in situ</i> loading of Mg(OH)<sub>2</sub> on SC, demonstrates exceptional efficacy for Cu<sup>2+</sup> adsorption. The high removal efficiency (>95%) and substantial adsorption capacity (253.37 mg g<sup>−1</sup>) surpass those of many conventional adsorbents. The adsorption process, well characterized by pseudo-second-order kinetics and the Langmuir model, confirms the material's potential. This work presents SC-Mg(OH)<sub>2</sub> as a highly effective and advanced adsorbent, significantly contributing to the development of functional hydrogel materials for remediating heavy metal pollution in wastewater. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 2","pages":"287-298"},"PeriodicalIF":2.4,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon-based materials from renewable sources: Challenges and perspectives with a focus on green coconut 来自可再生能源的碳基材料：以绿色椰子为重点的挑战和观点

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-27 DOI: 10.1002/jctb.70093

Yslaine Andrade de Almeida, Iara de Fatima Gimenez, Ledjane Silva Barreto, Isis Nayra Rolemberg Prudente, Hericles Campos dos Santos

This article presents a comprehensive examination of agricultural production, biomass generation, and its transformation into biochar, with a particular emphasis on green coconut waste as a primary resource. It underscores the link between agriculture and substantial biomass output, shedding light on the ecological issues associated with solid waste. Furthermore, it highlights the significance of sustainable approaches. The article explores different aspects of green coconut biomass, encompassing its chemical composition, covering the biomass-to-biochar conversion, and addressing production techniques and activation methods. In the context of biochar applications, the article scrutinizes the preparation procedures for green coconut utilization, emphasizing emerging trends and overlooked areas. It includes prior research conducted by our research group. In the section discussing future prospects, it emphasizes the relevance of proper selection of coconut waste as carbon precursors, while also considering the obstacles to widespread adoption. Lastly, it examines the potential of biochar within the framework of the circular economy, along with its role in fostering sustainable practices and managing biomass waste. © 2025 The Author(s). Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

本文介绍了农业生产，生物质发电及其转化为生物炭的综合检查，特别强调绿色椰子废料作为主要资源。它强调了农业与大量生物量产出之间的联系，揭示了与固体废物有关的生态问题。此外，它还强调了可持续方法的重要性。本文探讨了绿色椰子生物质的不同方面，包括其化学成分，涵盖生物质到生物炭的转化，以及解决生产技术和活化方法。在生物炭应用的背景下，文章审查了绿色椰子利用的制备程序，强调了新兴趋势和被忽视的领域。它包括我们研究小组之前进行的研究。在讨论未来前景的部分，它强调了适当选择椰子废料作为碳前体的相关性，同时也考虑到广泛采用的障碍。最后，研究了生物炭在循环经济框架内的潜力，以及它在促进可持续实践和管理生物质废物方面的作用。©2025作者。由John Wiley &； Sons Ltd代表美国化学工业学会（SCI）出版的化学技术与生物技术杂志。

{"title":"Carbon-based materials from renewable sources: Challenges and perspectives with a focus on green coconut","authors":"Yslaine Andrade de Almeida, Iara de Fatima Gimenez, Ledjane Silva Barreto, Isis Nayra Rolemberg Prudente, Hericles Campos dos Santos","doi":"10.1002/jctb.70093","DOIUrl":"https://doi.org/10.1002/jctb.70093","url":null,"abstract":"<p>This article presents a comprehensive examination of agricultural production, biomass generation, and its transformation into biochar, with a particular emphasis on green coconut waste as a primary resource. It underscores the link between agriculture and substantial biomass output, shedding light on the ecological issues associated with solid waste. Furthermore, it highlights the significance of sustainable approaches. The article explores different aspects of green coconut biomass, encompassing its chemical composition, covering the biomass-to-biochar conversion, and addressing production techniques and activation methods. In the context of biochar applications, the article scrutinizes the preparation procedures for green coconut utilization, emphasizing emerging trends and overlooked areas. It includes prior research conducted by our research group. In the section discussing future prospects, it emphasizes the relevance of proper selection of coconut waste as carbon precursors, while also considering the obstacles to widespread adoption. Lastly, it examines the potential of biochar within the framework of the circular economy, along with its role in fostering sustainable practices and managing biomass waste. © 2025 The Author(s). <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 3","pages":"477-493"},"PeriodicalIF":2.4,"publicationDate":"2025-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146199418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in the human immunoglobulin G purification from blood and colostrum via mild chromatographic strategies 温和色谱法纯化血液和初乳免疫球蛋白G的研究进展

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-22 DOI: 10.1002/jctb.70088

Calef Sánchez-Trasviña, Erick Sánchez-Salguero, Claudia Angélica García-Alonso, Marion Brunck, Karla Mayolo-Deloisa

BACKGROUND

Research on breastmilk passive immunity requires enriching antibodies from complex samples for downstream assays. Currently, most chromatographic IgG purification processes meet the required purity level but could compromise the tridimensional structure of IgG and, therefore, their functionality. This work aims to establish mild chromatography strategies, using the Melon™ Gel Purification Kit, to purify IgG from human plasma and colostrum. The effect of multiple experimental parameters, such as purification steps, initial protein concentration, and sample volume, was tested. Size exclusion chromatography (SEC) was used as a complementary step. The in vitro functionality of the enriched IgG from both tissues was tested by a phagocytosis assay with peripheral blood neutrophils and E. coli bioparticles.

RESULTS

In human plasma, the initial protein concentration was inversely proportional to the IgG purity, being linear in the range between 1.5 and 4.5 mg mL⁻¹, where the IgG purity ranged between 55 and 97%. The adjustment of plasma samples at 1.5 mg mL⁻¹ of total protein increased the IgG purity up to 98% in a single purification step. On the other hand, when the protein concentration of colostrum samples was adjusted, IgG purity reached only 9.3%. The maximum IgG purity of colostrum samples was 25% after two purification steps. The remaining contaminant proteins can be eliminated by SEC. Finally, IgG samples showed significant enhanced phagocytosis by peripheral blood neutrophils.

CONCLUSIONS

The present work provides chromatographic purification strategies for purifying and enriching IgG (avoiding structural modifications) from complex and volume-limited samples. © 2025 Society of Chemical Industry (SCI).

背景母乳被动免疫的研究需要从复杂的样品中富集抗体，以便进行下游检测。目前，大多数色谱法纯化IgG的工艺都能满足要求的纯度水平，但可能会损害IgG的三维结构，从而影响其功能。本工作旨在建立温和的色谱策略，使用Melon™凝胶纯化试剂盒，从人血浆和初乳中纯化IgG。多个实验参数的影响，如纯化步骤，初始蛋白浓度和样品体积，进行了测试。粒径排除色谱（SEC）作为补充步骤。通过外周血中性粒细胞和大肠杆菌生物颗粒的吞噬试验，检测两种组织中富集的IgG的体外功能。结果在人血浆中，初始蛋白浓度与IgG纯度成反比，在1.5 ~ 4.5 mg mL−1范围内呈线性关系，其中IgG纯度在55% ~ 97%之间。在总蛋白浓度为1.5 mg mL−1时调整血浆样品，可使IgG的纯度在一次纯化步骤中提高到98%。另一方面，当调整初乳样品的蛋白质浓度时，IgG纯度仅为9.3%。两步纯化后的初乳样品IgG的最高纯度为25%。剩余的污染蛋白可以被SEC清除。最后，IgG样品被外周血中性粒细胞显著增强吞噬。结论本工作提供了从复杂和体积有限的样品中纯化和富集IgG（避免结构修饰）的色谱纯化策略。©2025化学工业学会（SCI）。

{"title":"Advances in the human immunoglobulin G purification from blood and colostrum via mild chromatographic strategies","authors":"Calef Sánchez-Trasviña, Erick Sánchez-Salguero, Claudia Angélica García-Alonso, Marion Brunck, Karla Mayolo-Deloisa","doi":"10.1002/jctb.70088","DOIUrl":"https://doi.org/10.1002/jctb.70088","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Research on breastmilk passive immunity requires enriching antibodies from complex samples for downstream assays. Currently, most chromatographic IgG purification processes meet the required purity level but could compromise the tridimensional structure of IgG and, therefore, their functionality. This work aims to establish mild chromatography strategies, using the Melon™ Gel Purification Kit, to purify IgG from human plasma and colostrum. The effect of multiple experimental parameters, such as purification steps, initial protein concentration, and sample volume, was tested. Size exclusion chromatography (SEC) was used as a complementary step. The <i>in vitro</i> functionality of the enriched IgG from both tissues was tested by a phagocytosis assay with peripheral blood neutrophils and <i>E. coli</i> bioparticles.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>In human plasma, the initial protein concentration was inversely proportional to the IgG purity, being linear in the range between 1.5 and 4.5 mg mL<sup>−1</sup>, where the IgG purity ranged between 55 and 97%. The adjustment of plasma samples at 1.5 mg mL<sup>−1</sup> of total protein increased the IgG purity up to 98% in a single purification step. On the other hand, when the protein concentration of colostrum samples was adjusted, IgG purity reached only 9.3%. The maximum IgG purity of colostrum samples was 25% after two purification steps. The remaining contaminant proteins can be eliminated by SEC. Finally, IgG samples showed significant enhanced phagocytosis by peripheral blood neutrophils.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSIONS</h3>\u0000 \u0000 <p>The present work provides chromatographic purification strategies for purifying and enriching IgG (avoiding structural modifications) from complex and volume-limited samples. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 2","pages":"276-286"},"PeriodicalIF":2.4,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A multiscale approach to evaluate the effect of different extraction and pre-treatment methodologies on physicochemical properties of cashew (Anacardium occidentale L.) nut shell liquid 采用多尺度方法评价不同提取和预处理方法对腰果果壳液理化性质的影响

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-22 DOI: 10.1002/jctb.70087

Johan León, Gabriela Ortiz, Oscar Álvarez, Andres Fernando Gonzalez Barrios, Alejandro Maranon, Camilo Hernandez, Camilo Ayala, Alicia Porras

BACKGROUND

Cashew nutshell liquid (CNSL) is an agro-industrial residue from cashew production that has gained relevance due to its possibilities to generate valuable by-products. Although lab-scale CNSL extraction has been studied in terms of yield and energy efficiency, the effect of industrial-scale extraction and nut pre-treatment methods on the physicochemical properties of the extract remains underexplored. Thus, this work focuses on using a multiscale approach to study the relationship between the most common extraction (Soxhlet and mechanical pressing) and pre-treatment processes (roasting and steaming) with CNSL chemical composition and its physicochemical properties.

RESULTS

The study revealed minimal variations (<0.5% w/w) on phenolic lipids mass fraction of different CNSL samples. However, Soxhlet extracted samples revealed an increase of 2.9%–6.7% (w/w) of cardanol content, as well as 50% lower viscosity and 34% lower saponification value than pressed CNSL samples. Additionally, the study demonstrated that pre-treatment operation influences CNSL composition since CNSL from raw nuts exhibits 35% less amount of phenolic lipids than pre-treated samples. Samples from raw nuts also exhibited vibration of ester groups on their FTIR spectra, which may indicate the presence of diacylglycerols.

CONCLUSION

The findings demonstrate that while extraction methods have limited effect on CNSL physicochemical properties, nut pre-treatment markedly alters its chemical nature. By clarifying how pre-treatment impacts CNSL quality, this work reduces technological barriers for cashew producers and processors, enabling informed selection of efficient methods for transforming CNSL into valuable by-products, and enhancing the economic and sustainable utilization of this bioresource. © 2025 The Author(s). Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

腰果果液（CNSL）是腰果生产中的农业工业残留物，由于其产生有价值的副产品的可能性而获得了相关性。虽然实验室规模的CNSL提取已经在产量和能源效率方面进行了研究，但工业规模的提取和坚果预处理方法对提取物的物理化学性质的影响仍未得到充分探讨。因此，本研究的重点是使用多尺度方法研究最常见的提取（索氏和机械压榨）和预处理工艺（焙烧和蒸煮）与CNSL化学成分及其理化性质之间的关系。结果研究显示，不同CNSL样品的酚类脂质质量分数变化极小（<0.5% w/w）。然而，索氏提取样品的腰果酚含量比压榨后的CNSL样品提高了2.9%-6.7% (w/w)，粘度降低了50%，皂化值降低了34%。此外，该研究表明，预处理操作会影响CNSL的组成，因为来自生坚果的CNSL比预处理样品的酚类脂含量少35%。生坚果样品在FTIR光谱上也表现出酯基的振动，这可能表明二酰基甘油的存在。结论提取方法对CNSL理化性质的影响有限，而坚果预处理可显著改变其理化性质。通过阐明预处理如何影响腰果果实质量，本研究减少了腰果生产者和加工者的技术障碍，使他们能够明智地选择有效的方法将腰果果实转化为有价值的副产品，并提高这种生物资源的经济和可持续利用。©2025作者。由John Wiley &； Sons Ltd代表美国化学工业学会（SCI）出版的化学技术与生物技术杂志。

{"title":"A multiscale approach to evaluate the effect of different extraction and pre-treatment methodologies on physicochemical properties of cashew (Anacardium occidentale L.) nut shell liquid","authors":"Johan León, Gabriela Ortiz, Oscar Álvarez, Andres Fernando Gonzalez Barrios, Alejandro Maranon, Camilo Hernandez, Camilo Ayala, Alicia Porras","doi":"10.1002/jctb.70087","DOIUrl":"https://doi.org/10.1002/jctb.70087","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Cashew nutshell liquid (CNSL) is an agro-industrial residue from cashew production that has gained relevance due to its possibilities to generate valuable by-products. Although lab-scale CNSL extraction has been studied in terms of yield and energy efficiency, the effect of industrial-scale extraction and nut pre-treatment methods on the physicochemical properties of the extract remains underexplored. Thus, this work focuses on using a multiscale approach to study the relationship between the most common extraction (Soxhlet and mechanical pressing) and pre-treatment processes (roasting and steaming) with CNSL chemical composition and its physicochemical properties.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The study revealed minimal variations (<0.5% w/w) on phenolic lipids mass fraction of different CNSL samples. However, Soxhlet extracted samples revealed an increase of 2.9%–6.7% (w/w) of cardanol content, as well as 50% lower viscosity and 34% lower saponification value than pressed CNSL samples. Additionally, the study demonstrated that pre-treatment operation influences CNSL composition since CNSL from raw nuts exhibits 35% less amount of phenolic lipids than pre-treated samples. Samples from raw nuts also exhibited vibration of ester groups on their FTIR spectra, which may indicate the presence of diacylglycerols.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The findings demonstrate that while extraction methods have limited effect on CNSL physicochemical properties, nut pre-treatment markedly alters its chemical nature. By clarifying how pre-treatment impacts CNSL quality, this work reduces technological barriers for cashew producers and processors, enabling informed selection of efficient methods for transforming CNSL into valuable by-products, and enhancing the economic and sustainable utilization of this bioresource. © 2025 The Author(s). <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 2","pages":"266-275"},"PeriodicalIF":2.4,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

rGO/BiVO4/MnFe2O4, a novel ternary composite, as an effective photocatalyst for the reduction of nitroaromatic compounds into their amines under visible light rGO/BiVO4/MnFe2O4是一种新型三元复合材料，作为一种有效的光催化剂，在可见光下将硝基芳香族化合物还原成胺

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-22 DOI: 10.1002/jctb.70085

Ali Oji Moghanlou, Sahar Mohajeri, Nayer Mohammadian Tarighi

BACKGROUND

Regarding the high toxicity and contamination of nitroaromatic compounds, their photocatalytic reduction to their corresponding amino-aromatics is a promising green approach. In the present research, a novel heterogeneous nanocomposite of rGO/BiVO₄/MnFe₂O₄ was synthesized through reduction of graphene oxide and coupling BiVO₄/MnFe₂O₄ binary nanoparticles between graphene oxide layers using hydrothermal method. Structural and morphological properties, as well as optical and photocatalytic activities, of the synthesized nanocomposites were assessed by physico-chemical techniques. Hydrazine monohydrate was used to provide hydrogen.

RESULTS

The results indicated successful reduction of graphene oxide and its coupling with binary nanoparticles of BiVO₄/MnFe₂O₄ between reduced graphene oxide sheets. The synthesized nanocomposites were employed to reduce nitroaromatic pollutants into their corresponding amino-aromatics under visible radiation which showed successful results.

CONCLUSION

Our study revealed the exceptional photocatalytic performance of the ternary heterogeneous rGO/BiVO₄/MnFe₂O₄ nanocomposite, which achieved complete (100%) conversion of nitrobenzene to aniline in merely 10 min under visible light irradiation. The reaction was conducted using 0.5 mmol nitrobenzene, 50 mg photocatalyst, and 5 mmol hydrazine monohydrate in a 5 mL mixed solvent system (methanol-dichloromethane-acetonitrile, (1:1:1) v/v). A 30 W white LED lamp (λ > 420 nm) served as the light source, with reaction progress monitored by GC–MS analysis. This nanocomposite outperforms previously reported photocatalysts in terms of activity while demonstrating remarkable structural stability and recyclability maintaining consistent efficiency and mass balance even after ten consecutive reuse cycles. © 2025 Society of Chemical Industry (SCI).

背景针对硝基芳香族化合物的高毒性和高污染性，光催化还原其对应的氨基芳香族是一种很有前途的绿色途径。在本研究中，通过氧化石墨烯还原和水热法在氧化石墨烯层之间偶联BiVO4/MnFe2O4二元纳米粒子，合成了一种新型的rGO/BiVO4/MnFe2O4非均相纳米复合材料。采用物理化学方法对合成的纳米复合材料的结构、形态、光学和光催化活性进行了评价。一水合肼被用来提供氢。结果氧化石墨烯成功还原，并与氧化石墨烯片间BiVO4/MnFe2O4二元纳米粒子偶联。利用合成的纳米复合材料在可见光下将硝基芳香族污染物还原为相应的氨基芳香族，取得了成功的效果。我们的研究揭示了三元非均相rGO/BiVO4/MnFe2O4纳米复合材料具有优异的光催化性能，在可见光照射下仅10分钟即可将硝基苯完全（100%）转化为苯胺。以0.5 mmol硝基苯、50 mg光催化剂和5 mmol水合肼为原料，在5 mL混合溶剂体系（甲醇-二氯甲烷-乙腈，（1:1:1）v/v）中进行反应。以30 W白光LED灯（λ > 420 nm）为光源，用GC-MS分析监测反应过程。这种纳米复合材料在活性方面优于先前报道的光催化剂，同时表现出显著的结构稳定性和可回收性，即使在连续10次重复使用循环后也能保持一致的效率和质量平衡。©2025化学工业学会（SCI）。

{"title":"rGO/BiVO4/MnFe2O4, a novel ternary composite, as an effective photocatalyst for the reduction of nitroaromatic compounds into their amines under visible light","authors":"Ali Oji Moghanlou, Sahar Mohajeri, Nayer Mohammadian Tarighi","doi":"10.1002/jctb.70085","DOIUrl":"https://doi.org/10.1002/jctb.70085","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Regarding the high toxicity and contamination of nitroaromatic compounds, their photocatalytic reduction to their corresponding amino-aromatics is a promising green approach. In the present research, a novel heterogeneous nanocomposite of rGO/BiVO<sub>4</sub>/MnFe<sub>2</sub>O<sub>4</sub> was synthesized through reduction of graphene oxide and coupling BiVO<sub>4</sub>/MnFe<sub>2</sub>O<sub>4</sub> binary nanoparticles between graphene oxide layers using hydrothermal method. Structural and morphological properties, as well as optical and photocatalytic activities, of the synthesized nanocomposites were assessed by physico-chemical techniques. Hydrazine monohydrate was used to provide hydrogen.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The results indicated successful reduction of graphene oxide and its coupling with binary nanoparticles of BiVO<sub>4</sub>/MnFe<sub>2</sub>O<sub>4</sub> between reduced graphene oxide sheets. The synthesized nanocomposites were employed to reduce nitroaromatic pollutants into their corresponding amino-aromatics under visible radiation which showed successful results.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Our study revealed the exceptional photocatalytic performance of the ternary heterogeneous rGO/BiVO<sub>4</sub>/MnFe<sub>2</sub>O<sub>4</sub> nanocomposite, which achieved complete (100%) conversion of nitrobenzene to aniline in merely 10 min under visible light irradiation. The reaction was conducted using 0.5 mmol nitrobenzene, 50 mg photocatalyst, and 5 mmol hydrazine monohydrate in a 5 mL mixed solvent system (methanol-dichloromethane-acetonitrile, (1:1:1) v/v). A 30 W white LED lamp (λ > 420 nm) served as the light source, with reaction progress monitored by GC–MS analysis. This nanocomposite outperforms previously reported photocatalysts in terms of activity while demonstrating remarkable structural stability and recyclability maintaining consistent efficiency and mass balance even after ten consecutive reuse cycles. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 1","pages":"182-199"},"PeriodicalIF":2.4,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145751133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review on conversion of carbon dioxide (CO2) to methanol and methane by photocatalytic reactors: a comparative analysis with algae-based CO2 sequestration 光催化反应器将二氧化碳转化为甲醇和甲烷的研究进展：与藻类CO2固存的比较分析

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-22 DOI: 10.1002/jctb.70086

J Arun, P Priyadharsini, S Shyam, M Subathra, KP Gopinath, S Nachiappan, S Naveen

Carbon dioxide (CO₂) emission due to urbanization and industrialization are the key factors behind global warming and climate changes. United Nations in 2018, stated that, due to CO₂ emissions, earth's temperature would increase 1.5 °C between 2032 and 2050. Variation in climatic conditions will definitely have a huge impact on human health and ecosystem. To mimic the CO₂ emission, various countries have put forward laws and policies. This review focuses primarily on the biological and photocatalytic reduction of CO₂ to valuable products like chemicals and fuels. This review provides valuable information on the reduction of CO₂ to valuable products and benefits the researchers, academics, and industrial personnel on resource recovery concepts. Photo reactor design and operating conditions define the level of CO₂ conversion efficiency. Algae-based CO₂ utilization and recovery of products from algae biomass are explored for biofuel production process. However, the storage capacity of products, bulk processing of CO₂ are needed in future research perspectives. Overall, this study strongly contributes towards achieving sustainable development goals (SDGs). © 2025 Society of Chemical Industry (SCI).

城市化和工业化导致的二氧化碳排放是导致全球变暖和气候变化的关键因素。联合国在2018年的一份报告中指出，由于二氧化碳的排放，地球温度将在2032年至2050年期间上升1.5°C。气候条件的变化肯定会对人类健康和生态系统产生巨大影响。为了模拟二氧化碳的排放，各国都提出了法律和政策。本文主要综述了二氧化碳的生物和光催化还原制备有价值的产品，如化学品和燃料。这篇综述提供了有价值的信息，减少二氧化碳的有价值的产品，有利于研究人员，学者和工业人员的资源回收概念。光反应器的设计和运行条件决定了CO2转化效率的高低。研究了以藻类为基础的二氧化碳利用和藻类生物质产品的回收，用于生物燃料的生产过程。然而，产品的储存能力、二氧化碳的批量处理是未来研究的方向。总的来说，这项研究对实现可持续发展目标（sdg）做出了巨大贡献。©2025化学工业学会（SCI）。

{"title":"A review on conversion of carbon dioxide (CO2) to methanol and methane by photocatalytic reactors: a comparative analysis with algae-based CO2 sequestration","authors":"J Arun, P Priyadharsini, S Shyam, M Subathra, KP Gopinath, S Nachiappan, S Naveen","doi":"10.1002/jctb.70086","DOIUrl":"https://doi.org/10.1002/jctb.70086","url":null,"abstract":"<p>Carbon dioxide (CO<sub>2</sub>) emission due to urbanization and industrialization are the key factors behind global warming and climate changes. United Nations in 2018, stated that, due to CO<sub>2</sub> emissions, earth's temperature would increase 1.5 °C between 2032 and 2050. Variation in climatic conditions will definitely have a huge impact on human health and ecosystem. To mimic the CO<sub>2</sub> emission, various countries have put forward laws and policies. This review focuses primarily on the biological and photocatalytic reduction of CO<sub>2</sub> to valuable products like chemicals and fuels. This review provides valuable information on the reduction of CO<sub>2</sub> to valuable products and benefits the researchers, academics, and industrial personnel on resource recovery concepts. Photo reactor design and operating conditions define the level of CO<sub>2</sub> conversion efficiency. Algae-based CO<sub>2</sub> utilization and recovery of products from algae biomass are explored for biofuel production process. However, the storage capacity of products, bulk processing of CO<sub>2</sub> are needed in future research perspectives. Overall, this study strongly contributes towards achieving sustainable development goals (SDGs). © 2025 Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 2","pages":"241-254"},"PeriodicalIF":2.4,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145969886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and characterization of lanthanum supported halloysite nanotubes catalyst in obtaining low molecular weight of liquid epoxidized natural rubber 镧负载型高岭土纳米管催化剂制备低分子量液态环氧化天然橡胶的研究

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-20 DOI: 10.1002/jctb.70060

Nur Najwa Abdul Talib, Noor Hana Hanif Abu Bakar, Mohamad Abu Bakar, Anwar Iqbal, Nurul Hayati Yusof, dan Rosniza Hamzah

BACKGROUND

Lanthanum catalyst supported on halloysite nanotubes (La/HNTs) was explored for the degradation of liquid epoxidized natural rubber (LENR) into low molecular weight LENR (lmw-LENR). The La/HNT catalyst was synthesized using a simple impregnation method and characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy with energy dispersive X-ray (SEM–EDX), X-ray fluorescence (XRF), Fourier-transform infrared spectroscopy (FTIR), and nuclear magnetic resonance (NMR). These techniques were employed to examine the physicochemical properties of the catalyst and to evaluate its performance in LENR degradation.

RESULT

The characterization revealed the presence of lanthanum hydroxide (La(OH)₃-n) species on the HNT surface. The La/HNTs effectively reduced the average molecular weight of LENR from 26 360 to 6961, corresponding to a 73.6% reduction under optimum conditions of 0.5 g catalyst loading at 150 °C for 4 h in a batch reactor. The degradation mechanism was attributed to hydroxide ions attacking the oxirane ring, leading to chain scission and the formation of shorter LENR chains. NMR and FTIR analyses confirmed the successful ring opening and cleavage of CC bonds, while the catalyst retained its structural integrity. Catalyst performance was strongly influenced by particle size, hydroxyl availability, and metal–support interactions.

CONCLUSION

This study demonstrates the efficiency of La/HNT catalysts in promoting LENR degradation via hydroxide-driven chain scission. The significant reduction in molecular weight highlights their potential application in rubber processing and recycling, offering a sustainable approach to valorizing epoxidized rubber materials. © 2025 Society of Chemical Industry (SCI).

研究了高岭土纳米管负载镧催化剂（La/HNTs）对液态环氧化天然橡胶（LENR）降解成低分子量天然橡胶（lmn -LENR）的作用。采用简单浸渍法合成了La/HNT催化剂，并通过x射线光电子能谱（XPS）、能量色散扫描电子显微镜（SEM-EDX）、x射线荧光（XRF）、傅里叶变换红外光谱（FTIR）和核磁共振（NMR）对催化剂进行了表征。这些技术被用来检验催化剂的物理化学性质，并评价其在LENR降解中的性能。结果表征表明在HNT表面存在氢氧化镧（La（OH）₃-n）物质。La/HNTs有效地将LENR的平均分子量从26 360降低到6961，在0.5 g催化剂负载、150°C、间歇反应器中4 h的最佳条件下，其平均分子量降低了73.6%。降解机理是氢氧根离子攻击氧环，导致链断裂，形成较短的LENR链。核磁共振和红外光谱分析证实了C - - C键的成功开环和裂解，同时保持了催化剂的结构完整性。催化剂的性能受到颗粒大小、羟基可用性和金属载体相互作用的强烈影响。结论La/HNT催化剂可促进氢氧化物驱动的链裂解降解LENR。分子量的显著降低突出了它们在橡胶加工和回收中的潜在应用，为环氧化橡胶材料的增值提供了一种可持续的方法。©2025化学工业学会（SCI）。

{"title":"Synthesis and characterization of lanthanum supported halloysite nanotubes catalyst in obtaining low molecular weight of liquid epoxidized natural rubber","authors":"Nur Najwa Abdul Talib, Noor Hana Hanif Abu Bakar, Mohamad Abu Bakar, Anwar Iqbal, Nurul Hayati Yusof, dan Rosniza Hamzah","doi":"10.1002/jctb.70060","DOIUrl":"https://doi.org/10.1002/jctb.70060","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Lanthanum catalyst supported on halloysite nanotubes (La/HNTs) was explored for the degradation of liquid epoxidized natural rubber (LENR) into low molecular weight LENR (lmw-LENR). The La/HNT catalyst was synthesized using a simple impregnation method and characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy with energy dispersive X-ray (SEM–EDX), X-ray fluorescence (XRF), Fourier-transform infrared spectroscopy (FTIR), and nuclear magnetic resonance (NMR). These techniques were employed to examine the physicochemical properties of the catalyst and to evaluate its performance in LENR degradation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULT</h3>\u0000 \u0000 <p>The characterization revealed the presence of lanthanum hydroxide (La(OH)₃-n) species on the HNT surface. The La/HNTs effectively reduced the average molecular weight of LENR from 26 360 to 6961, corresponding to a 73.6% reduction under optimum conditions of 0.5 g catalyst loading at 150 °C for 4 h in a batch reactor. The degradation mechanism was attributed to hydroxide ions attacking the oxirane ring, leading to chain scission and the formation of shorter LENR chains. NMR and FTIR analyses confirmed the successful ring opening and cleavage of CC bonds, while the catalyst retained its structural integrity. Catalyst performance was strongly influenced by particle size, hydroxyl availability, and metal–support interactions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This study demonstrates the efficiency of La/HNT catalysts in promoting LENR degradation <i>via</i> hydroxide-driven chain scission. The significant reduction in molecular weight highlights their potential application in rubber processing and recycling, offering a sustainable approach to valorizing epoxidized rubber materials. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 1","pages":"34-49"},"PeriodicalIF":2.4,"publicationDate":"2025-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainability impacts for converting to Raman spectroscopy inline monitoring from traditional offline manual sampling in small-scale and large-scale biomanufacturing 小规模和大规模生物制造中从传统的离线人工采样转换为拉曼光谱在线监测对可持续性的影响

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology

Pub Date : 2025-10-15 DOI: 10.1002/jctb.70084

Stacy Simon, Phyllis Pugh, Preeya Boppana, Zahra Allen, Jenna Lemons, Veera Padmanabhan

As biomanufacturing evolves to meet environmental goals, adopting innovative analytical technologies creates new pathways for sustainable process control. This study examines the impact of replacing traditional offline manual sampling with inline Raman spectroscopy for monitoring critical bioprocess parameters in both small- and large-scale production. Conventional offline methods for measuring glucose, lactate, viable cell density and osmolality rely heavily on single-use plastics and frequent manual handling, leading to increased waste and carbon emissions. Quantitative analysis shows that integrating inline Raman spectroscopy with predictive modeling can eliminate about 13.36 kg of single-use plastic and prevent 80.17 kg of CO₂ emissions per combined run, with potential for greater annual impact. Raman-enabled process analytical technology enables robust, real-time monitoring, with model performance metrics (R² and Q²) consistently above 0.79 for key indicators, while also reducing contamination risk by maintaining closed systems. Although product quality and shipping emissions are not covered in this assessment, these results highlight considerable sustainability, operational and analytical advantages of Raman-based monitoring. Implementing inline Raman spectroscopy advances AstraZeneca's and the industry's carbon neutrality and waste reduction goals, making it a transformative step for responsible bioprocessing. © 2025 AstraZeneca, PLC. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

随着生物制造的发展以满足环境目标，采用创新的分析技术为可持续的过程控制创造了新的途径。本研究探讨了在小型和大规模生产中，用在线拉曼光谱代替传统的离线人工采样对监测关键生物过程参数的影响。测量葡萄糖、乳酸、活细胞密度和渗透压的传统离线方法严重依赖一次性塑料和频繁的人工处理，导致浪费和碳排放增加。定量分析表明，将在线拉曼光谱与预测建模相结合，每次联合运行可减少约13.36 kg的一次性塑料，减少80.17 kg的二氧化碳排放，并且每年的影响可能更大。拉曼过程分析技术实现了强大的实时监控，关键指标的模型性能指标（R2和Q2）始终高于0.79，同时还通过保持封闭系统来降低污染风险。虽然本评估不包括产品质量和运输排放，但这些结果突出了基于拉曼的监测的相当大的可持续性、操作和分析优势。实施内联拉曼光谱推进了阿斯利康和行业的碳中和和废物减少目标，使其成为负责任的生物处理的变革性步骤。©2025阿斯利康，PLC由John Wiley &； Sons Ltd代表美国化学工业学会（SCI）出版的化学技术与生物技术杂志。

{"title":"Sustainability impacts for converting to Raman spectroscopy inline monitoring from traditional offline manual sampling in small-scale and large-scale biomanufacturing","authors":"Stacy Simon, Phyllis Pugh, Preeya Boppana, Zahra Allen, Jenna Lemons, Veera Padmanabhan","doi":"10.1002/jctb.70084","DOIUrl":"https://doi.org/10.1002/jctb.70084","url":null,"abstract":"<p>As biomanufacturing evolves to meet environmental goals, adopting innovative analytical technologies creates new pathways for sustainable process control. This study examines the impact of replacing traditional offline manual sampling with inline Raman spectroscopy for monitoring critical bioprocess parameters in both small- and large-scale production. Conventional offline methods for measuring glucose, lactate, viable cell density and osmolality rely heavily on single-use plastics and frequent manual handling, leading to increased waste and carbon emissions. Quantitative analysis shows that integrating inline Raman spectroscopy with predictive modeling can eliminate about 13.36 kg of single-use plastic and prevent 80.17 kg of CO₂ emissions per combined run, with potential for greater annual impact. Raman-enabled process analytical technology enables robust, real-time monitoring, with model performance metrics (<i>R</i><sup>2</sup> and <i>Q</i><sup>2</sup>) consistently above 0.79 for key indicators, while also reducing contamination risk by maintaining closed systems. Although product quality and shipping emissions are not covered in this assessment, these results highlight considerable sustainability, operational and analytical advantages of Raman-based monitoring. Implementing inline Raman spectroscopy advances AstraZeneca's and the industry's carbon neutrality and waste reduction goals, making it a transformative step for responsible bioprocessing. © 2025 AstraZeneca, PLC. <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 1","pages":"7-10"},"PeriodicalIF":2.4,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0