Journal of chemical technology and biotechnology最新文献

{"title":"A Farewell to a Man of Vision, a Dedicated Leader and True Friend","authors":"Dionissios Mantzavinos","doi":"10.1002/jctb.70116","DOIUrl":"https://doi.org/10.1002/jctb.70116","url":null,"abstract":"","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 1","pages":"5-6"},"PeriodicalIF":2.4,"publicationDate":"2025-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739772","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}

{"title":"Sewage treatment and removal of micropollutants in suspended and attached growth systems combining Chlorella sorokiniana and activated sludge","authors":"Asimina Koukoura,&nbsp;Evdokia Gkalipidou,&nbsp;Georgia Gatidou,&nbsp;Eirini Zkeri,&nbsp;Michalis S. Fountoulakis,&nbsp;Athanasios S. Stasinakis","doi":"10.1002/jctb.70106","DOIUrl":"https://doi.org/10.1002/jctb.70106","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Algal-bacterial consortia represent a promising symbiotic system with high potential for removing major pollutants and micropollutants from municipal wastewater. Four continuously stirred sequential batch reactors (SBRs) were used to investigate the combination of <i>Chlorella sorokiniana</i> and activated sludge for municipal wastewater treatment in both suspended and attached-growth systems under three different hydraulic retention times (HRTs). The reactors were configured as follows: SBR1 contained <i>C. sorokiniana</i> alone, SBR2 included <i>C. sorokiniana</i> and activated sludge, SBR3 combined <i>C. sorokiniana</i> with biocarriers, and SBR4 incorporated <i>C. sorokiniana</i>, activated sludge, and biocarriers.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>During Phases A (HRT = 3 d) and B (HRT = 2 d), all SBRs achieved dissolved chemical oxygen demand (COD) removal rates above 80%, with the highest removal observed in SBR4 (85%). Similarly, NH4-N removal exceeded 98% across all SBRs. In Phase C, the reduction of HRT to 1 d stressed the ability of SBR3 and SBR4 to efficiently remove COD and NH4-N as the existing biomass could not produce enough oxygen for maintaining aerobic conditions. PO4-P removal remained partial (&lt;55%) in all SBRs, regardless of the HRT. Biomass collected from the different systems was analyzed for protein, starch, and lipid content, with the highest levels observed in SBR2, measuring 43.6%, 10.9%, and 34.1%, respectively. Experiments conducted during Phase C assessed the removal of four benzotriazoles and 2-hydroxybenzothiazole (2-HBT), demonstrating that these reactors were also capable of partially removing these micropollutants. The highest removal was observed for 2-HBT in SBR1 (93%) while dissolved oxygen appeared to be critical for micropollutants removal.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Suspended and attached-growth algal-bacterial systems can be used for municipal wastewater treatment. Future research should focus on improving the understanding of biomass settleability and the mechanism of micropollutants removal. © 2025 The Author(s). <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley &amp; 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":"459-470"},"PeriodicalIF":2.4,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145986782","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}

{"title":"Sustainable closed-loop process for recovering base oil, rare-earth salts, and flocculants from oily NdFeB waste","authors":"Zheng Minglin,&nbsp;Lan Xin,&nbsp;Kaung Htet Oo,&nbsp;Kang Hua,&nbsp;Tian Xi,&nbsp;Chen Yu,&nbsp;Zhu Suiyi","doi":"10.1002/jctb.70095","DOIUrl":"https://doi.org/10.1002/jctb.70095","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>-Oily Nd–Fe–B machining sludge contains oil–metal capsules that hinder conventional washing and acid leaching. Calcination is often used to remove the oil component but causes secondary pollution, lowers rare-earth recovery, and requires costly equipment. To address these challenges, we developed a noncalcination HCl–CCl₄ coleaching route that simultaneously separates oil and valorizes metals from real oily Nd–Fe–B sludge.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The sludge contained 11.7% water, 10.44% oil, 55.82% Fe, 8.28% Nd, and 4.48% Pr. Pure HCl or conventional cleaners achieved &lt;80% rare-earth leaching and left viscous residues. In contrast, HCl–CCl₄ fully dissolved the sludge and produced clear phase separation: an organic phase yielding base oil after CCl₄ evaporation (91.6% solvent recovery) and an acidic aqueous phase enriched in metals (74 g L⁻¹ Fe, 11 g L⁻¹ Nd, 5 g L⁻¹ Pr, 1.9 g L⁻¹ Al). Adding Na₂SO₄ (60 g L⁻¹) rapidly precipitated rare-earths as double sulfates with 98.3% Nd and 98.9% Pr recovery, outperforming K₂SO₄ and (NH₄)₂SO₄. After that, the resulting supernatant contained ~96.5% Fe²⁺ of total Fe and, after nitrite-oxygen oxidation, yielded a ferric-rich flocculant suitable for wastewater treatment.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The HCl–CCl₄- coleaching route induces synergistic delayering of oil and oxyhydroxide shells, enabling clean base oil recovery, near-quantitative rare-earth precipitation, and effective utilization of the residual solution as a flocculant without generating secondary wastes. The demonstrated high recoveries and solvent recirculation underscore strong industrial potential for the valorization of oily metallic sludge. © 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":"316-323"},"PeriodicalIF":2.4,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145970193","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}

{"title":"Valorization of yellow, black, and white sapote peel byproducts: exploring their antioxidant, antimicrobial, and antibiofilm properties, along with computational mapping","authors":"Jorge Manuel Silva-Jara,&nbsp;Alfredo Juárez-Saldívar,&nbsp;Carlos Arnulfo Velázquez-Carriles,&nbsp;Luis Miguel Anaya-Esparza,&nbsp;Ernesto Rodríguez-Laffitte,&nbsp;Jorge Delgado-Caramutti,&nbsp;Blanca Rosa Aguilar-Uscanga,&nbsp;Omar Graciano-Machuca,&nbsp;Karina Jeanette Parra-Saavedra,&nbsp;Iván Balderas-León","doi":"10.1002/jctb.70104","DOIUrl":"https://doi.org/10.1002/jctb.70104","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>This study evaluated the antioxidant, antimicrobial, and antibiofilm properties of yellow (<i>Pouteria campechiana</i>), black (<i>Diospyros digyna</i>), and white (<i>Casimiroa edulis</i>) sapote peels, integrating <i>in vitro</i> bioassays and <i>in silico</i> pharmacological profiling.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Ultrasound-assisted extraction (UAE) and maceration were compared; phytochemical analysis revealed that UAE significantly increased total polyphenol and flavonoid content, with black sapote ultrasound (BSUS) extract displaying the highest values (TPC: 10.72 mg GAE/g, TFC: 4.77 mg QE/g). Antioxidant activity, measured by ABTS, DPPH, β-carotene bleaching, and FRAP assays, was concentration-dependent; BSUS and white sapote ultrasound (WSUS) extracts showed low IC₅₀ values (e.g., WSUS DPPH IC₅₀: 154.1 μg/mL), outperforming BHT in some assays. Antimicrobial assays demonstrated that ultrasound extracts, particularly WSUS and yellow sapote ultrasound (YSUS) extracts, achieved up to 70% inhibition against <i>E. coli</i> ATCC 8739 and 60% against <i>S. aureus</i> ATCC 25923 at 800 μg/mL. All extracts exhibited strong antibiofilm activity against <i>Pseudomonas aeruginosa</i>, achieving nearly 100% inhibition at 800 μg/mL. Toxicity assessment using <i>Artemia salina</i> indicated that white sapote extracts were toxic (viability ~40–50%), while yellow and black sapote extracts were non-toxic. <i>In silico</i> docking showed high binding affinities of sapote phenolics to the LasR protein, supporting observed antibiofilm effects; ADMET analysis indicated low mammalian toxicity but potential environmental risk for zapotin.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Sapote peels, especially black sapote obtained by ultrasound, are promising sources of multifunctional bioactive compounds for food, pharmaceutical, and biotechnological applications. However, safety evaluation is essential for white sapote extracts. © 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":"433-448"},"PeriodicalIF":2.4,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145969959","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}

{"title":"Free fatty acid reduction in waste cooking oil using biomass derived heterogeneous catalyst and machine learning-driven optimization","authors":"Guneet Kaur,&nbsp;Sravanthi Veluturla,&nbsp;Archna Narula,&nbsp;R L Chinmaya,&nbsp;B T Gurusrinidhi Kumar,&nbsp;Abhay Raj","doi":"10.1002/jctb.70105","DOIUrl":"https://doi.org/10.1002/jctb.70105","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The depletion of fossil fuel reserves underscores the urgent need for sustainable alternatives, and biodiesel derived from waste cooking oil (WCO) emerges as a promising solution. This approach not only addresses the challenges of disposal of waste cooking oil from eateries but also contributes to a circular economy by converting waste into a valuable resource.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The present work focuses on the synthesis of a heterogeneous biomass-derived mixed-metal oxide (WO₃/SiO₂) catalyst for targeting Free Fatty Acid (FFA) reduction in WCO. The properties of the catalyst were analysed using XRD, FTIR, BET, and SEM with EDS analysis. The reaction parameters such as catalyst loading (2 to 4 w/w%), methanol to oil molar ratio (15:1 to 25:1), and the reaction time (2–10 h) were varied while keeping the reaction temperature constant at 65 °C for the FFA reduction reaction. A Machine Learning technique such as Random Forest was used to optimize the reaction parameters. A maximum FFA conversion of 62.16% was predicted by the model at optimum reaction parameters of methanol to oil molar ratio as 19.7368:1, amount of catalyst as 3.6 w/w%, and time of 9.2 h, which agreed well with the experimentally obtained optimal reaction parameters of methanol to oil molar ratio as 20:1, amount of catalyst as 4 w/w%, and duration of reaction as 10 h. Although the FFA conversion is modest, the as-prepared catalyst effectively reduces FFA in used cooking oil below 2% without further modifications.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This work highlights the effective utilisation of machine learning for optimization of reaction parameters that targeted the reduction of acid value in WCO, thereby facilitating its efficient conversion into biodiesel. © 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":"449-458"},"PeriodicalIF":2.4,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987064","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}

{"title":"Efficient activation of peroxymonosulfate by MoSe2-based bimetallic composite selenides for the degradation of levofloxacin","authors":"Taiping Xie,&nbsp;Shengli Xie,&nbsp;Yuxuan He,&nbsp;Kailin Xu,&nbsp;Jin Qian","doi":"10.1002/jctb.70103","DOIUrl":"https://doi.org/10.1002/jctb.70103","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Antibiotic pollution in aquatic environments poses significant threats to human health and ecosystems by promoting the spread of antibiotic resistance.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>This study investigates the use of MoSe₂-based bimetallic composite selenides (MoSe₂/CoSe₂ and MoSe₂/MnSe) to activate peroxymonosulfate (PMS) for the oxidation of levofloxacin (LEF), a model fluoroquinolone antibiotic. The composites were synthesized <i>via</i> a solvothermal method and characterized using SEM, TEM, XRD, and XPS, confirming the formation of heterojunction interfaces and the presence of active metal sites. Catalytic performance tests demonstrated that MoSe₂/CoSe₂ and MoSe₂/MnSe significantly enhanced LEF degradation, achieving removal efficiencies of 92.98% and 89.4%, respectively, compared to 49.07% with MoSe₂ alone. Optimization of reaction parameters revealed that PMS dosage, catalyst dosage, and pH critically influence degradation efficiency. Reusability tests confirmed the catalysts' stability over multiple cycles with minimal loss in activity. Electron paramagnetic resonance (EPR) and radical quenching experiments identified sulfate radicals (SO₄^•-) as the primary active species driving LEF degradation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This work provides a robust theoretical foundation for the application of SR-AOPs in wastewater treatment, highlighting the potential of MoSe₂-based composites in mitigating antibiotic contamination. © 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":"418-432"},"PeriodicalIF":2.4,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987158","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}

{"title":"Production of recombinant bone morphogenetic protein-2 in Escherichia coli: process optimization in shake flask and bioreactor cultures using statistical experimental design","authors":"Natthida Donpromma,&nbsp;Kittikhun Wangkanont,&nbsp;Peerapat Thongnuek,&nbsp;Chonlatep Usaku","doi":"10.1002/jctb.70099","DOIUrl":"https://doi.org/10.1002/jctb.70099","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>This study aimed to enhance production of bone morphogenetic protein-2 (BMP-2), a therapeutic agent for treatments of bone-associated diseases, from engineered <i>Escherichia coli</i> BL21 (DE3) cultures. A central composite design (CCD) was initially applied to evaluate effects of process variables in a shake flask – time, inoculum size, and lactose concentration – on BMP-2 production, and determine their optimal levels. With the obtained optimal shake flask condition from the first CCD, another CCD was then performed to reveal the effects of process variables in the bioreactor – aeration rate and agitation speed – and suggest their optimal levels.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Toward maximizing BMP-2 production, the desirability analysis based on the resulting statistical models from the first CCD suggested optimal levels of those flask variables, one of which – <i>~</i>9 h, 7% inoculum size, and 3 g L⁻¹ lactose concentration – gave the highest BMP-2 concentration and BMP-2:dry cell weight (DCW) ratio of 192.5 mg L⁻¹ and 118.4 mg g⁻¹ in subsequent experimental validation. From the desirability analysis with the model from the subsequent CCD, only ~1 vvm and 250 rpm were suggested as their optimal levels, experimentally providing the highest BMP-2 production; 195.9 mg L⁻¹ BMP-2 concentration and 135.9 mg g⁻¹ BMP-2:DCW ratio in bioreactor cultures.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Compared to non-optimized cultures, 23–27% and 36–44% increases in BMP-2 concentration and BMP-2:DCW ratio were achieved with the suggested optimal culture conditions. All the experimental data fell within the statistical 95% prediction intervals, ensuring validity of the obtained model predictions. © 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":"367-380"},"PeriodicalIF":2.4,"publicationDate":"2025-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145969860","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}

{"title":"Short-term effect of the superficial gas velocity and light–dark cycles on the photosynthetic activity of the microalga Scenedesmus obtusiusculus AT-UAM","authors":"Juan Cabello,&nbsp;Sergio Revah,&nbsp;Marcia Morales","doi":"10.1002/jctb.70101","DOIUrl":"https://doi.org/10.1002/jctb.70101","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Dynamic operation strategies enable the analysis of short-term physiological adaptations of microalgal cultures in photobioreactors. In this study, dynamic experiments were conducted to evaluate the O₂ production and CO₂ consumption rates of <i>Scenedesmus obtusiusculus</i> AT-UAM at superficial gas velocities of 0.28, 0.51, and 0.75 m·min⁻¹ in a 20-L bubble-column photobioreactor under continuous illumination. Furthermore, photosynthetic activity and biomass productivity were assessed under LED-induced light–dark cycles of 5:5 min, 1:1 min, 30:30 s, 6:6 s and 1:1 s in a 2-L flat-panel photobioreactor.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The highest CO₂ consumed and O₂ production rates were 287 mg_O2 g_b⁻¹ h⁻¹ and 658 mg_CO2 g_b⁻¹ h⁻¹, respectively, at a superficial gas velocity of 0.75 m min⁻¹ and a biomass concentration of 0.4 g_bL⁻¹. The increase in O₂ production rate was due to the combined effects of CO₂ and nutrient mass transfer, as well as light–dark cycles induced by changes in mixing conditions. Therefore, it was important to assess the independent contribution of light–dark cycles on photosynthetic activity. The highest biomass productivity was 1.1 g_b L⁻¹d⁻¹ with continuous illumination and decreased to 0.53 and 0.05 g_b L⁻¹d⁻¹ for light–dark cycles of 5:5 min and 1:1 s, respectively.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSIONS</h3>\u0000 \u0000 <p>These results showed that short light–dark cycles do not lead to higher photosynthetic activity, because photosystems do not absorb sufficient light, and the microalga does not store enough energy to sustain growth at the same level as under continuous illumination. Therefore, the mixing-induced light–dark cycles are not the main contribution to increment activity photosynthetic in large-scale photobioreactors. © 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":"381-390"},"PeriodicalIF":2.4,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145986984","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}

{"title":"MOF-derived cobalt@hollow carbon spheres: scalable synthesis and efficient peroxymonosulfate activation for p-chlorophenol degradation","authors":"Yan Zhao,&nbsp;Qianwen Zheng,&nbsp;Jiahao Wang,&nbsp;Lekang Cui,&nbsp;Helin Pan,&nbsp;Yayun Zhang","doi":"10.1002/jctb.70102","DOIUrl":"https://doi.org/10.1002/jctb.70102","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The design of catalysts, particularly those with industrially practical dimensions, is critical for advancing wastewater treatment.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>We report a scalable strategy that integrates MOF-derived Co active sites into millimeter-sized hollow carbon spheres (HCS) prepared via phase separation of polyacrylonitrile. The resulting Co@HCS combines hierarchical porosity and graphitized shells with confined Co nanoparticles and Co–N–C sites, enabling efficient peroxymonosulfate (PMS) activation. Compared with HCS and Co@ZIF, Co@HCS achieved &gt;80% <i>p</i>-chlorophenol (4-CP; 50 mg L⁻¹) removal within 10 min, with activity enhanced by increased Co loading and optimal PMS dosage (0.50 g L⁻¹). The catalyst exhibited broad pH adaptability (50.1–90.2% removal at pH 3–9), strong temperature responsiveness and low apparent activation energy (16.3 kJ mol⁻¹). Radical quenching and electron paramagnetic resonance confirmed SO₄^•− as the dominant species, while X-ray photoelectron spectroscopy revealed dynamic Co⁰/Co²⁺/Co³⁺ cycling sustaining PMS activation. Notably, the millimeter-sized morphology of Co@HCS enabled stable &gt;70% 4-CP removal over 48 h in continuous flow (addressing nanocatalyst drawbacks).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Co@HCS is an efficient, durable and recyclable catalyst. This catalyst combines nanoscale catalytic precision with macroscopic practicality, facilitating the practical application of persulfate-driven advanced oxidation processes and providing a durable and recyclable solution for such processes in continuous-flow water treatment. © 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":"391-402"},"PeriodicalIF":2.4,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145970135","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}

{"title":"From azeotropes to dehydrated alcohols: dual-stage salt separation of isobutanol and ethanol for green biorefining","authors":"Rongze Lin,&nbsp;Linjing Zhong,&nbsp;Fulin Hu,&nbsp;Ke Yin,&nbsp;Shaoqu Xie","doi":"10.1002/jctb.70096","DOIUrl":"https://doi.org/10.1002/jctb.70096","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The efficient separation of isobutanol–ethanol–water azeotropes remains a critical bottleneck in the advancement of sustainable isobutanol production, where conventional distillation is both energy-intensive and inefficient. Here, we report a low-energy, salt-assisted separation strategy employing alkaline potassium salts, with K₂CO₃ demonstrating exceptional dewatering capability.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Under near-saturation conditions, a single-step salting-out process enables the recovery of over 99.8 wt% of isobutanol and ethanol from aqueous mixtures. However, due to the inherent limitations of the salting-out equilibrium, a one-step process cannot fully eliminate residual water. To address this, we introduce a sequential two-step salting-out strategy, which reduces the water content in the organic-rich phase to 3.44 wt%, effectively surpassing the dehydration performance of conventional methods.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Through this method, a traditional distillation can be replaced by a scalable, energy-efficient, and industrially feasible purification method, which can lead to a paradigm change in the recovery of alcohols from azeotropic mixtures. © 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":"341-354"},"PeriodicalIF":2.4,"publicationDate":"2025-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145970124","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}