Pub Date : 2024-09-29DOI: 10.1016/j.jiec.2024.09.046
Peng Lei , Ruifang Wang , Chuan Dong , Shaomin Shuang , Minglu Li
Glandular damage can be caused by various factors, including disease, trauma, or other abnormalities within the organism. The viscosity of the gland is one of the important indicators to measure the degree of damage. Sulfur dioxide (SO2) is widely used as an important food additive due to its preservative and bleaching properties, but its overuse has serious negative impacts on the environment, so it is urgent to develop a simple detection method. Herein, we designed and synthesized a mitochondria-targeted near-infrared (NIR) fluorescence probe (BDC) for the detection of viscosity and SO2. BDC consisted of a donor-π-acceptor (D-π-A) structure and extended double bonds bridging rotor, which enabled sensitive response to viscosity and intense fluorescence emission. The TICT (twisted intramolecular charge transfer) of BDC was inhibited with an increase in viscosity, accompanied by a significant enhancement of red fluorescence signal with emission wavelength beyond 800 nm. Notably, BDC was able to noninvasively and sensitively monitor the viscosity changes in the glands of non-obese diabetic (NOD) mice model. BDC was utilized for monitoring SO2 in food and environmental samples through Michael addition reactions, providing a straightforward tool for SO2 detection in food safety and environmental monitoring.
{"title":"Mitochondria-targeted NIR molecular probe for detecting viscosity of gland damage and SO2 in actual samples","authors":"Peng Lei , Ruifang Wang , Chuan Dong , Shaomin Shuang , Minglu Li","doi":"10.1016/j.jiec.2024.09.046","DOIUrl":"10.1016/j.jiec.2024.09.046","url":null,"abstract":"<div><div>Glandular damage can be caused by various factors, including disease, trauma, or other abnormalities within the organism. The viscosity of the gland is one of the important indicators to measure the degree of damage. Sulfur dioxide (SO<sub>2</sub>) is widely used as an important food additive due to its preservative and bleaching properties, but its overuse has serious negative impacts on the environment, so it is urgent to develop a simple detection method. Herein, we designed and synthesized a mitochondria-targeted near-infrared (NIR) fluorescence probe (BDC) for the detection of viscosity and SO<sub>2</sub>. BDC consisted of a donor-π-acceptor (D-π-A) structure and extended double bonds bridging rotor, which enabled sensitive response to viscosity and intense fluorescence emission. The TICT (twisted intramolecular charge transfer) of BDC was inhibited with an increase in viscosity, accompanied by a significant enhancement of red fluorescence signal with emission wavelength beyond 800 nm. Notably, BDC was able to noninvasively and sensitively monitor the viscosity changes in the glands of non-obese diabetic (NOD) mice model. BDC was utilized for monitoring SO<sub>2</sub> in food and environmental samples through Michael addition reactions, providing a straightforward tool for SO<sub>2</sub> detection in food safety and environmental monitoring.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"140 ","pages":"Pages 658-664"},"PeriodicalIF":5.9,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-26DOI: 10.1016/j.jiec.2024.09.045
Govinda Raj Muniyandi , Jeyapaul Ubagaram , Abinaya Srinivasan , Daisy Rani James , Nalandhiran Pugazhenthiran , Chandramohan Govindasamy , John Alphin Joseph , Aruljothy John Bosco , Shanmugam Mahalingam , Junghwan Kim
Abnormal concentrations of antibiotics found in aquatic environments have raised serious environmental concerns. For the efficient degradation of antibiotics, it is necessary to develop photocatalysts that react to visible light. In this work, calcination and hydrothermal methods were used to synthesize bare H-g-C3N4 and Bi2S3, respectively. Various analytic methods, such as XRD, XPS, FT-IR, HR-SEM, and HR-TEM, were utilized to verify the accomplished synthesis of the materials produced. The results of ultraviolet–visible diffuse reflectance spectroscopy (UV–DRS) showed that the synthesized nanocomposites exhibited a lower band gap than the bare materials and thus greater visible-light absorption. The degradation efficacy of the bare materials and hydrothermally synthesized nanocomposites over ciprofloxacin were investigated. A high degradation efficiency of 92 % was demonstrated for ciprofloxacin using the H-g-C3N4/Bi2S3 (5 %) nanocomposite. This remarkable efficiency underscores the potential of this nanocomposite in removing antibiotic pollutants from wastewater. In addition, the electron transfer dynamics amid the two materials (H-g-C3N4 and Bi2S3) within the heterojunction was elucidated. The findings provide valuable insights into the mechanisms underlying the enhanced photocatalytic activity of nanocomposites, paving the way for further optimization and development of advanced photocatalytic systems for environmental remediation.
{"title":"Advanced Z-scheme H-g-C3N4/Bi2S3 nanocomposites: Boosting photocatalytic degradation of antibiotics under visible light exposure","authors":"Govinda Raj Muniyandi , Jeyapaul Ubagaram , Abinaya Srinivasan , Daisy Rani James , Nalandhiran Pugazhenthiran , Chandramohan Govindasamy , John Alphin Joseph , Aruljothy John Bosco , Shanmugam Mahalingam , Junghwan Kim","doi":"10.1016/j.jiec.2024.09.045","DOIUrl":"10.1016/j.jiec.2024.09.045","url":null,"abstract":"<div><div>Abnormal concentrations of antibiotics found in aquatic environments have raised serious environmental concerns. For the efficient degradation of antibiotics, it is necessary to develop photocatalysts that react to visible light. In this work, calcination and hydrothermal methods were used to synthesize bare H-g-C<sub>3</sub>N<sub>4</sub> and Bi<sub>2</sub>S<sub>3</sub>, respectively. Various analytic methods, such as XRD, XPS, FT-IR, HR-SEM, and HR-TEM, were utilized to verify the accomplished synthesis of the materials produced. The results of ultraviolet–visible diffuse reflectance spectroscopy (UV–DRS) showed that the synthesized nanocomposites exhibited a lower band gap than the bare materials and thus greater visible-light absorption. The degradation efficacy of the bare materials and hydrothermally synthesized nanocomposites over ciprofloxacin were investigated. A high degradation efficiency of 92 % was demonstrated for ciprofloxacin using the H-g-C<sub>3</sub>N<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub> (5 %) nanocomposite. This remarkable efficiency underscores the potential of this nanocomposite in removing antibiotic pollutants from wastewater. In addition, the electron transfer dynamics amid the two materials (H-g-C<sub>3</sub>N<sub>4</sub> and Bi<sub>2</sub>S<sub>3</sub>) within the heterojunction was elucidated. The findings provide valuable insights into the mechanisms underlying the enhanced photocatalytic activity of nanocomposites, paving the way for further optimization and development of advanced photocatalytic systems for environmental remediation.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"140 ","pages":"Pages 647-657"},"PeriodicalIF":5.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-12DOI: 10.1016/j.jiec.2024.09.019
Eunjeong Cho, Sooin Jeong, Donguk Kim, Wonchang Choi
LiFeMnPO (LFMP) cathode materials faces developmental challenges because Fe and Mn ions are prone to oxidation during the synthesis process and exhibit low electronic and ionic conductivities. We propose employing a multifunctional sodium gluconate that simultaneously acts as a reducing agent and dopant. XPS analysis shows an increased ratio of Fe and Mn ions within LFMP following the introduction of the reducing agent. Rietveld refinement indicates an expanded b-axis lattice space at an appropriate amount of Na-doped LFMP/C, which results in enhancement the Li diffusivity. SEM and TEM-EDS mapping confirm the morphology and elemental distribution of the LFMP materials. Electrochemical properties show the introduction of sodium gluconate enhanced the electrochemical properties of LFMP materials. This result demonstrates that the reducing agent prevents oxidation of transition metals during synthesis and Na doping significantly increases the Li diffusion coefficient. The LiNaFeMnPO/C sample, when combined with a reducing agent, exhibits an outstanding rate performance of 122.6 mAh/g at 1C, 113.4 mAh/g at 5C, and 85.1 mAh/g at 20C. The enhancements in both electronic and ionic conductivities of LFMP cathodes are mainly ascribed to the incorporation of a reducing agent and Na doping.
由于铁和锰离子在合成过程中易被氧化，且电子和离子导电率较低，因此锂铁锰磷酸盐（LFMP）阴极材料面临着开发方面的挑战。我们建议采用一种多功能葡萄糖酸钠，同时充当还原剂和掺杂剂。XPS 分析表明，引入还原剂后，LFMP 中铁离子和锰离子的比例增加。里特维尔德精炼表明，掺入适量 Na 的 LFMP/C 扩大了 b 轴晶格空间，从而提高了锂的扩散率。SEM 和 TEM-EDS 图谱证实了 LFMP 材料的形态和元素分布。电化学特性表明，葡萄糖酸钠的引入增强了 LFMP 材料的电化学特性。这一结果表明，还原剂可防止过渡金属在合成过程中被氧化，而 Na 的掺入则显著提高了锂的扩散系数。与还原剂结合使用的 LiNaFeMnPO/C 样品具有出色的速率性能，1℃ 时为 122.6 mAh/g，5℃ 时为 113.4 mAh/g，20℃ 时为 85.1 mAh/g。LFMP 阴极电子和离子电导率的提高主要归功于还原剂的加入和 Na 的掺杂。
{"title":"Sodium-doped LiFe0.5Mn0.5PO4 using sodium gluconate as both reducing agent and a doping source in Lithium-ion batteries","authors":"Eunjeong Cho, Sooin Jeong, Donguk Kim, Wonchang Choi","doi":"10.1016/j.jiec.2024.09.019","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.09.019","url":null,"abstract":"LiFeMnPO (LFMP) cathode materials faces developmental challenges because Fe and Mn ions are prone to oxidation during the synthesis process and exhibit low electronic and ionic conductivities. We propose employing a multifunctional sodium gluconate that simultaneously acts as a reducing agent and dopant. XPS analysis shows an increased ratio of Fe and Mn ions within LFMP following the introduction of the reducing agent. Rietveld refinement indicates an expanded b-axis lattice space at an appropriate amount of Na-doped LFMP/C, which results in enhancement the Li diffusivity. SEM and TEM-EDS mapping confirm the morphology and elemental distribution of the LFMP materials. Electrochemical properties show the introduction of sodium gluconate enhanced the electrochemical properties of LFMP materials. This result demonstrates that the reducing agent prevents oxidation of transition metals during synthesis and Na doping significantly increases the Li diffusion coefficient. The LiNaFeMnPO/C sample, when combined with a reducing agent, exhibits an outstanding rate performance of 122.6 mAh/g at 1C, 113.4 mAh/g at 5C, and 85.1 mAh/g at 20C. The enhancements in both electronic and ionic conductivities of LFMP cathodes are mainly ascribed to the incorporation of a reducing agent and Na doping.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"17 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A series of ionic polymers (DipyBr, n = 2, 3, 4) have been synthesized under solvothermal conditions using diaminodibenzo-18-crown-6, 4-pyridinecarboxaldehyde and the corresponding bromomethyl monomer in one-pot through multi-components reactions. After comprehensive characterization of these ionic polymers by FT-IR, SEM, TGA, C CP MAS NMR, XPS, N adsorption isotherm, etc., the performance of CO fixation reaction and iodine vapor adsorption were deliberated in details. Notably, the DipyBr catalyst exhibited the best conversion yield of 97.6% for CO fixation at the controlled conditions, and the preliminary kinetic study indicated that the activation energy () for CO cycloaddition reaction catalyzed by DipyBr was determined as 70.66 kJ·mol. Furthermore, the study of iodine vapor capture showed that DipyBr has a high iodine absorption capacity (5171 mg·g).
利用二氨基二苯并-18-冠醚-6，4-吡啶甲醛和相应的溴甲基单体，通过多组分反应，在溶热条件下合成了一系列离子聚合物（DipyBr，n = 2，3，4）。通过傅立叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、热重分析（TGA）、C CP MAS 核磁共振（NMR）、XPS、氮吸附等温线等对这些离子聚合物进行综合表征后，详细讨论了它们在 CO 固定反应和碘蒸气吸附方面的性能。初步的动力学研究表明，DipyBr 催化 CO 环加成反应的活化能（）为 70.66 kJ-mol。此外，碘蒸气捕获研究表明，DipyBr 具有很高的碘吸收能力（5171 mg-g）。
{"title":"Construction on ionic organic polymers by multi-components reactions: Experimental and kinetics modeling of efficient CO2-fixation and high iodine vapor adsorption","authors":"Xuanbo Liu, Ningning Li, Yuhang Zhang, Zheng Zhu, Xionglei Wang, Yafei Sang, Tao Chang, Jiajia Yang, Shenjun Qin, Yongjing Hao","doi":"10.1016/j.jiec.2024.09.015","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.09.015","url":null,"abstract":"A series of ionic polymers (DipyBr, n = 2, 3, 4) have been synthesized under solvothermal conditions using diaminodibenzo-18-crown-6, 4-pyridinecarboxaldehyde and the corresponding bromomethyl monomer in one-pot through multi-components reactions. After comprehensive characterization of these ionic polymers by FT-IR, SEM, TGA, C CP MAS NMR, XPS, N adsorption isotherm, etc., the performance of CO fixation reaction and iodine vapor adsorption were deliberated in details. Notably, the DipyBr catalyst exhibited the best conversion yield of 97.6% for CO fixation at the controlled conditions, and the preliminary kinetic study indicated that the activation energy () for CO cycloaddition reaction catalyzed by DipyBr was determined as 70.66 kJ·mol. Furthermore, the study of iodine vapor capture showed that DipyBr has a high iodine absorption capacity (5171 mg·g).","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"44 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-10DOI: 10.1016/j.jiec.2024.09.010
Bowen Wang, Hang Yin, Miao Zhang, Fenge Zhang
In order to improve the physicochemical properties of heavy metal adsorbents, researchers developed a novel composite microsphere material (SEI) by incorporating Sepiolite (Sep) and cross-linked polyethyleneimine (PEI) with sodium alginate (SA) as a carrier. The stability of the SEI under normal use conditions was high by thermogravimetric analysis, and COOH, OH, and NH functional groups were detected by FTIR, which were confirmed to be involved in adsorption. It was found that the adsorption rate of SEI on Pb(II) and Cd(II) obeyed a pseudo-second-order kinetic model, while the adsorption pattern was closely related to the Langmuir equation. Notably, the maximum adsorption capacity of SEI for Pb(II) and Cd(II) was 1099.93 mg/g and 112.89 mg/g, respectively, at 30 °C. In addition, thermodynamic analyses showed that the adsorption process was spontaneous, with entropy increase along with heat absorption. After six adsorption and desorption cycles, the removal of Pb(II) and Cd(II) by SEI remained above 90 %. These findings suggest that SEI is a promising and environmentally friendly material for the removal of Pb(II) and Cd(II).
{"title":"Efficient removal of Pb(II) and Cd(II) from water by polyethyleneimine-amidated sepiolite-sodium alginate composite microspheres: Characterization and mechanistic analysis","authors":"Bowen Wang, Hang Yin, Miao Zhang, Fenge Zhang","doi":"10.1016/j.jiec.2024.09.010","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.09.010","url":null,"abstract":"In order to improve the physicochemical properties of heavy metal adsorbents, researchers developed a novel composite microsphere material (SEI) by incorporating Sepiolite (Sep) and cross-linked polyethyleneimine (PEI) with sodium alginate (SA) as a carrier. The stability of the SEI under normal use conditions was high by thermogravimetric analysis, and COOH, OH, and NH functional groups were detected by FTIR, which were confirmed to be involved in adsorption. It was found that the adsorption rate of SEI on Pb(II) and Cd(II) obeyed a pseudo-second-order kinetic model, while the adsorption pattern was closely related to the Langmuir equation. Notably, the maximum adsorption capacity of SEI for Pb(II) and Cd(II) was 1099.93 mg/g and 112.89 mg/g, respectively, at 30 °C. In addition, thermodynamic analyses showed that the adsorption process was spontaneous, with entropy increase along with heat absorption. After six adsorption and desorption cycles, the removal of Pb(II) and Cd(II) by SEI remained above 90 %. These findings suggest that SEI is a promising and environmentally friendly material for the removal of Pb(II) and Cd(II).","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"111 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-10DOI: 10.1016/j.jiec.2024.09.008
Jae Hwan Choi, Shikyung Yoon, Sunyoung Kim, Myung Kyun Shin, Jong Min Lee
This study presents the development of a comprehensive process model for simulating and optimizing the FINEX process consists of the multi-stage fluidized beds, the melter-gasifier unit, and a gas recycling system. The model is developed using Pyomo, a Python-based open-source software package that provides extensive capabilities for formulating, solving, and analyzing optimization models. It incorporates heat and mass balance equations and captures a wide range of chemical reactions, including the reduction of iron ore by hydrogen and carbon monoxide, the calcination of carbonate materials, the water–gas shift reaction, and coal gasification and combustion. Unknown parameters in the model, such as heat loss in each reactor, the extent of the calcination reaction, and the outlet gas temperature from the melter-gasifier, were estimated to calibrate the model. These parameters were estimated by solving an optimization problem that minimizes the gap between the model and real plant data. The optimized model was employed to investigate various scenarios for minimizing CO emissions in the FINEX process. This included assessing the impact of HBI charging rates, iron ore quality, and the integration of a CCUS unit. For each scenario, an optimization problem was formulated to minimize production costs across a range of CO tax levels. The optimal solutions revealed the relationships between process economics and CO emissions for each variable.
{"title":"Modeling, parameter estimation and optimization of fluidized bed-based alternative ironmaking process for CO2 emission reduction","authors":"Jae Hwan Choi, Shikyung Yoon, Sunyoung Kim, Myung Kyun Shin, Jong Min Lee","doi":"10.1016/j.jiec.2024.09.008","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.09.008","url":null,"abstract":"This study presents the development of a comprehensive process model for simulating and optimizing the FINEX process consists of the multi-stage fluidized beds, the melter-gasifier unit, and a gas recycling system. The model is developed using Pyomo, a Python-based open-source software package that provides extensive capabilities for formulating, solving, and analyzing optimization models. It incorporates heat and mass balance equations and captures a wide range of chemical reactions, including the reduction of iron ore by hydrogen and carbon monoxide, the calcination of carbonate materials, the water–gas shift reaction, and coal gasification and combustion. Unknown parameters in the model, such as heat loss in each reactor, the extent of the calcination reaction, and the outlet gas temperature from the melter-gasifier, were estimated to calibrate the model. These parameters were estimated by solving an optimization problem that minimizes the gap between the model and real plant data. The optimized model was employed to investigate various scenarios for minimizing CO emissions in the FINEX process. This included assessing the impact of HBI charging rates, iron ore quality, and the integration of a CCUS unit. For each scenario, an optimization problem was formulated to minimize production costs across a range of CO tax levels. The optimal solutions revealed the relationships between process economics and CO emissions for each variable.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"117 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study investigated flash calcination of magnesite powder in a one-throughput transport bed to clarify how the conversion and product activity as well as microstructure vary with reaction conditions including temperature, particle size, and numbers of re-calcination. Results showed that calcination of magnesite powder at 850–1000 °C is a quick reaction, allowing 99% of its containing MgCO to be decomposed in 1–2 s. Activity of product from the transport bed flash calcination (TBFC) is obviously higher than that from fixed bed calcination. Product activity depends on both decomposition rate and microstructure. During calcination, the surface structure of product changes from loose and porous to dense and smooth, even in a few seconds. A recently commissioned commercial TBFC plant indeed produced the light-burned magnesia according to the anticipation of this study, and it only requires a fuel consumption about 40 % lower than that of conventional reverberatory furnace.
{"title":"Flash calcination of magnesite in a one-throughput transport bed: reaction characterization and industrial justification","authors":"Ping An, Zhenglong Sun, Xiaofeng Song, Cong Sun, Bowei Yan, Zhennan Han, Dingrong Bai, Guangwen Xu","doi":"10.1016/j.jiec.2024.09.012","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.09.012","url":null,"abstract":"This study investigated flash calcination of magnesite powder in a one-throughput transport bed to clarify how the conversion and product activity as well as microstructure vary with reaction conditions including temperature, particle size, and numbers of re-calcination. Results showed that calcination of magnesite powder at 850–1000 °C is a quick reaction, allowing 99% of its containing MgCO to be decomposed in 1–2 s. Activity of product from the transport bed flash calcination (TBFC) is obviously higher than that from fixed bed calcination. Product activity depends on both decomposition rate and microstructure. During calcination, the surface structure of product changes from loose and porous to dense and smooth, even in a few seconds. A recently commissioned commercial TBFC plant indeed produced the light-burned magnesia according to the anticipation of this study, and it only requires a fuel consumption about 40 % lower than that of conventional reverberatory furnace.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"22 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-06DOI: 10.1016/j.jiec.2024.09.005
Fawzy G. El Desouky, A.M. Ismail, R.A. Nasr
The current research explores nanocomposites PVDF/Ppy/ZnS (PV/PY/ZS) manufactured using co-precipitation and casting processes to improve dynamic mechanical testing, luminescence, and visible light photocatalytic wastewater.ZS is precisely integrated and evenly distributed in the PV/PY matrix, according to XRD, FESEM, and FTIR measurements. The addition of ZS nanoparticles to the PV/PY matrix significantly enhances the change in the storage modulus of the nanocomposites, which ranges from 1.42 to 13.58 GPa at a temperature of 25 °C. PV/PY-0.03ZS has uniform electronic microscopic structures, as demonstrated by a corresponding peak at the same frequency. The addition of ZS species drastically lowered the photoluminescence (PL) spectra of PV/PY-0.03ZS, indicating that ZS modulation inhibited electron-hole pair production.The PV/PY-0.03ZS composite removed brilliant cressyl blue (BCB) 97 % at a rate constant of 0.012 min. In visible light, the scavenger experiment showed that electrons were essential for BCB dye photodegradation over PV, PY, and 0.03 ZS. Reusing the same conditions had no effect on removal efficiency. A factorial design comprising sixteen experiments was used to investigate the effects of variables. This fits in with the sustainability axis, which suggests that the developed immobilized photocatalyst might be used in industrial-scale water treatment units instead of slurry reactors.
{"title":"Modifying PVDF/Ppy’s mechanical and luminescent properties by incorporating ZnS nanoparticles for visible light photocatalytic water remediation: Experimental and theoretical approach","authors":"Fawzy G. El Desouky, A.M. Ismail, R.A. Nasr","doi":"10.1016/j.jiec.2024.09.005","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.09.005","url":null,"abstract":"The current research explores nanocomposites PVDF/Ppy/ZnS (PV/PY/ZS) manufactured using co-precipitation and casting processes to improve dynamic mechanical testing, luminescence, and visible light photocatalytic wastewater.ZS is precisely integrated and evenly distributed in the PV/PY matrix, according to XRD, FESEM, and FTIR measurements. The addition of ZS nanoparticles to the PV/PY matrix significantly enhances the change in the storage modulus of the nanocomposites, which ranges from 1.42 to 13.58 GPa at a temperature of 25 °C. PV/PY-0.03ZS has uniform electronic microscopic structures, as demonstrated by a corresponding peak at the same frequency. The addition of ZS species drastically lowered the photoluminescence (PL) spectra of PV/PY-0.03ZS, indicating that ZS modulation inhibited electron-hole pair production.The PV/PY-0.03ZS composite removed brilliant cressyl blue (BCB) 97 % at a rate constant of 0.012 min. In visible light, the scavenger experiment showed that electrons were essential for BCB dye photodegradation over PV, PY, and 0.03 ZS. Reusing the same conditions had no effect on removal efficiency. A factorial design comprising sixteen experiments was used to investigate the effects of variables. This fits in with the sustainability axis, which suggests that the developed immobilized photocatalyst might be used in industrial-scale water treatment units instead of slurry reactors.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"75 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-05DOI: 10.1016/j.jiec.2024.08.055
Kefan Chao, Li Wang, Zekai Jin, Muhua Chen, Xinbao Zhu, Gang Zhang, Bo Fu
The screening of absorbents is crucial to treat dichloromethane (DCM) exhaust gas by using the absorption method. In this work, binding energy calculation based on quantum computational chemistry are used to calculate the absorptive capacity of different absorbents for DCM. The absorption capacity experiment was used to verify the correspondence between the binding energy calculation results and the absorption capacity of the absorbent (R0.872). After intermolecular force analysis and further screening, we choose polyethylene glycol dimethyl ether (NHD) as the main solvent to obtain a better DCM absorbent. The new compound absorbent can be obtained after adjusting the compounding ratio of ethylene glycol (EG) and N-Methyl-2-pyrrolidone (NMP) to NHD. When the compound ratio of NHD and EG is 10:1, the system removal efficiency can reach 93.1 %. It has important application value for the recycling of DCM waste gas in the chemical and medical industries. The theoretical and experimental research in this work is of great significance for the future use of quantum computational chemistry methods to screen high-efficiency absorbents, explore absorption mechanisms and process development.
{"title":"Absorption of dichloromethane using NHD-EG-10 %: Molecular simulation and experimental investigation","authors":"Kefan Chao, Li Wang, Zekai Jin, Muhua Chen, Xinbao Zhu, Gang Zhang, Bo Fu","doi":"10.1016/j.jiec.2024.08.055","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.08.055","url":null,"abstract":"The screening of absorbents is crucial to treat dichloromethane (DCM) exhaust gas by using the absorption method. In this work, binding energy calculation based on quantum computational chemistry are used to calculate the absorptive capacity of different absorbents for DCM. The absorption capacity experiment was used to verify the correspondence between the binding energy calculation results and the absorption capacity of the absorbent (R0.872). After intermolecular force analysis and further screening, we choose polyethylene glycol dimethyl ether (NHD) as the main solvent to obtain a better DCM absorbent. The new compound absorbent can be obtained after adjusting the compounding ratio of ethylene glycol (EG) and N-Methyl-2-pyrrolidone (NMP) to NHD. When the compound ratio of NHD and EG is 10:1, the system removal efficiency can reach 93.1 %. It has important application value for the recycling of DCM waste gas in the chemical and medical industries. The theoretical and experimental research in this work is of great significance for the future use of quantum computational chemistry methods to screen high-efficiency absorbents, explore absorption mechanisms and process development.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"45 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-05DOI: 10.1016/j.jiec.2024.09.004
Asima Imtiyaz, Ajay Singh, Abhishek Bhardwaj
A significant area of interest for researchers has been the creation of trustworthy experimental techniques for producing metallic nanoparticles with specified structures and dimensions. Due to the unique features that make them usable in various scientific and technological disciplines, metallic nanoparticles made by green synthesis have attracted enormous interest over the past ten years. In this study, the plant extract of was used to create iron oxide nanoparticles utilizing a relatively affordable and straightforward conventional heating process. Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray, and X-ray diffraction were used to analyze the iron nanoparticles. Particles with diameters of 20–40 nm were created. The synthesized Iron oxide nanoparticles exhibit significant antibacterial effects against four pathogens by exhibiting a zone of inhibition for Vancomycin. The antioxidant activity DPPH of the iron oxide nanoparticles showed 83.29 %, 84.96 %, 86.71 %, 88.62 %, and 88.65 % at a different concentration, demonstrating that the scavenging percentage increases with increasing the iron oxide nanoparticles concentrations. After an investigation, Iron oxide nanoparticles were capable of photo-catalytically degrading Congo red. It was observed that at the maximum exposure length of 60 min, approximately 95 % of the dye was destroyed. This study’s findings open up new possibilities for creating, modifying, and using plant extract in nanoparticle design, development, and application.
研究人员关注的一个重要领域是创造出值得信赖的实验技术，用于生产具有特定结构和尺寸的金属纳米粒子。在过去的十年中，通过绿色合成技术制造的金属纳米粒子因其独特的特性而在各种科学和技术学科中得到了广泛的应用。在这项研究中，我们采用了一种相对经济实惠、简单直接的传统加热工艺，利用植物提取物来制造氧化铁纳米粒子。傅立叶变换红外光谱、扫描电子显微镜、能量色散 X 射线和 X 射线衍射被用来分析铁纳米粒子。生成的颗粒直径为 20-40 纳米。合成的氧化铁纳米粒子对四种病原体有明显的抗菌效果，对万古霉素有一定的抑制作用。在不同浓度下，纳米氧化铁的 DPPH 抗氧化活性分别为 83.29%、84.96%、86.71%、88.62% 和 88.65%，表明随着纳米氧化铁浓度的增加，其清除率也在增加。经过研究，纳米氧化铁粒子能够光催化降解刚果红。据观察，在 60 分钟的最长曝光时间内，约 95% 的染料被破坏。这项研究的发现为在纳米粒子的设计、开发和应用中创造、改造和使用植物提取物提供了新的可能性。
{"title":"Green synthesis of iron oxide nanoparticles from Iris kashmiriana (Mazar-Graveyard) Plant Extract its characterization of biological activities and photocatalytic activity","authors":"Asima Imtiyaz, Ajay Singh, Abhishek Bhardwaj","doi":"10.1016/j.jiec.2024.09.004","DOIUrl":"https://doi.org/10.1016/j.jiec.2024.09.004","url":null,"abstract":"A significant area of interest for researchers has been the creation of trustworthy experimental techniques for producing metallic nanoparticles with specified structures and dimensions. Due to the unique features that make them usable in various scientific and technological disciplines, metallic nanoparticles made by green synthesis have attracted enormous interest over the past ten years. In this study, the plant extract of was used to create iron oxide nanoparticles utilizing a relatively affordable and straightforward conventional heating process. Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray, and X-ray diffraction were used to analyze the iron nanoparticles. Particles with diameters of 20–40 nm were created. The synthesized Iron oxide nanoparticles exhibit significant antibacterial effects against four pathogens by exhibiting a zone of inhibition for Vancomycin. The antioxidant activity DPPH of the iron oxide nanoparticles showed 83.29 %, 84.96 %, 86.71 %, 88.62 %, and 88.65 % at a different concentration, demonstrating that the scavenging percentage increases with increasing the iron oxide nanoparticles concentrations. After an investigation, Iron oxide nanoparticles were capable of photo-catalytically degrading Congo red. It was observed that at the maximum exposure length of 60 min, approximately 95 % of the dye was destroyed. This study’s findings open up new possibilities for creating, modifying, and using plant extract in nanoparticle design, development, and application.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"266 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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