Journal of chemical technology and biotechnology最新文献

{"title":"Highly loaded copper on mesoporous silica as catalysts for acetaldehyde production from ethanol: their synthesis, characteristics, and catalytic properties","authors":"Chadaporn Krutpijit,&nbsp;Sirimas Suelueam,&nbsp;Bunjerd Jongsomjit","doi":"10.1002/jctb.7813","DOIUrl":"https://doi.org/10.1002/jctb.7813","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The present study investigates copper (Cu)/mesoporous catalysts supported on mesocellular foam silica (MCF-Si) and Santa Barbara Amorphous-15 (SBA-15) for ethanol dehydrogenation, focusing on catalyst synthesis, performance, and stability. Cu catalysts were impregnated on the MCF-Si and SBA-15 supports with different pore morphologies – spherical and hexagonal structure, respectively – using the wetness impregnation method and incipient wetness impregnation (IW), with a Cu loading of 60 wt%. The synthesized catalysts underwent physical and chemical characterization via scanning electron microscopy combined with energy-dispersive X-ray spectroscopy, X-ray fluorescence, X-ray diffraction (XRD), transmission electron microscopy, N₂ physisorption, X-ray photoelectron spectroscopy, thermogravimetric analysis (TGA), carbon monoxide chemisorption, hydrogen temperature-programmed reduction (H₂ TPR), ammonia temperature-programmed desorption, and carbon dioxide temperature-programmed desorption.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>It was observed that copper impregnation of the support in either method did not alter the structural characteristics. Incipient wetness resulted in superior catalytic activity, particularly with Cu/MCF-Si (IW), having pure ethanol conversion of 99.4% and acetaldehyde yield of 95.7%, attributed to effective Cu dispersion and a lower reduction temperature. Further investigation of time-on-stream (TOS) behavior revealed sustained ethanol conversion rates exceeding 95% with a 10% ethanol feed. However, catalyst deactivation due to coke formation occurred with 100% ethanol, highlighting the importance of understanding catalyst stability and deactivation mechanisms.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Incipient wetness resulted in superior performance compared to wetness impregnation, with Cu/MCF-Si (IW) achieving exceptional ethanol conversion rates due to effective Cu dispersion and a lower reduction temperature. TOS testing revealed sustained ethanol conversion; however, catalyst deactivation was observed with pure ethanol feed due to carbon deposition (coke formation). Characterization techniques, including XRD, TGA, and H₂ TPR analyses, provided valuable insights into the deactivation processes, highlighting the need for strategies to mitigate oxidation-induced deactivation. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 4","pages":"754-767"},"PeriodicalIF":2.8,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717249","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":"Improved bioethanol production from cocoa agro-industrial waste optimization based on reaction rate rules","authors":"Ricardo Aguilar-López,&nbsp;Pablo A. López-Pérez,&nbsp;Ricardo Femat,&nbsp;Eduardo Alvarado-Santos","doi":"10.1002/jctb.7815","DOIUrl":"https://doi.org/10.1002/jctb.7815","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Bioethanol production was enhanced from cocoa agro-industrial wastes by optimizing the reaction rate. A lab-scale set-up allowed us to show the proof of concept, in which agro-industrial wastes were fermented by <i>Candida krusei</i>. The goal was to show how a simple equation, based on Euler–Lagrange theory, has a feedback structure to command online from the measured variables related to cell growth and metabolism. The online correction involved computation of the feeding rate <i>F</i>_in from the derived equation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The proposed improvement resulted in increased bioethanol production. Bioethanol production from exponential and pulse strategies was 61 and 75 g L⁻¹, respectively, but reached 85 g L⁻¹ with the proposed improvement. The initial glucose concentration for the proof of concept was 60 g L⁻¹. The results show that the proposed optimization enhanced bioethanol production by about 24% and 36% with respect to exponential and pulse strategies, respectively. Thus, the Euler–Lagrange theory improves bioethanol production through <i>F</i>_in by optimizing the reaction rate with a very simple real-time implementation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This contribution provides a solid basis for potential industrial implementation with only the inflow profile as the unique measured variable to produce bioethanol as fuel from agro-industrial wastes. Thus, the proposed optimization might provide long-term benefits for economical bioethanol production via industrial ecology in terms of a carbon-neutral circular economy. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 4","pages":"768-777"},"PeriodicalIF":2.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717367","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":"A comprehensive study on the effect of air gap distances on morphology and gas separation performance of cellulose triacetate/polysulfone dual-layer hollow fiber membrane","authors":"Muhammad Hamad Zeeshan,&nbsp;Yin Fong Yeong,&nbsp;Thiam Leng Chew","doi":"10.1002/jctb.7811","DOIUrl":"https://doi.org/10.1002/jctb.7811","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Dual-layer hollow-fiber (DLHF) membranes possess various advantages over single-layer hollow-fiber (SLHF) membranes, such as use of brittle but high-performance materials, greater flexibility in the spinning process, improved pressure resistance, and reduced substrate resistance. However DLHF membranes face challenges in the fabrication process. Key spinning parameters of DLHF membranes such as dope flow rate, take-up speed, coagulant composition, and spinning temperature, are well studied in the literature, but the impact of higher air gap distance on membrane morphology and separation is less explored due to limited fabrication environments. Additionally, using different polymers for the outer and inner layers can reduce costs but often causes delamination, hindering DLHF membrane advancement. In this study, a new combination of cellulose triacetate (CTA) and polysulfone (PSf) polymers was used to fabricate a delamination-free DLHF membrane by varying the air gap distance in the range of 3–15 cm. Scanning electron microscopic analysis was performed to study its effect on membrane morphology.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The obtained results showed that the DLHF membrane spun at an air gap distance of 9 cm exhibited a CO₂ permeability of 17.76 GPU (gas permeation units), and CO₂/CH₄ and CO₂/N₂ selectivity of 12.00 and 17.44, respectively, which were 377.32% and 579.68% higher than that of fibers spun at 3 cm air gap distance.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>In this study, it can be inferred that 9 cm is the optimum air gap distance of the CTA/PSf DLHF membrane in terms of performance, thus making them a potential polymer combination for future DLHF membrane fabrication and gas separation. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 4","pages":"742-753"},"PeriodicalIF":2.8,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717362","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":"Trametes cingulata: A white rot fungus in decolorization of azo dye reactive red 239","authors":"Juliana Feijó de Souza Daniel,&nbsp;Fausto Rodrigues Cardoso,&nbsp;Karina B Angilelli,&nbsp;Carolina Andrella Gomes,&nbsp;Lucas Magalhães Abreu,&nbsp;Orlando de Carvalho Junior","doi":"10.1002/jctb.7797","DOIUrl":"https://doi.org/10.1002/jctb.7797","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Azo dyes in textile effluents represent a particular health concern because they include azo groups (NN), which are reactive with DNA nucleic acids. The enzymes produced by white rot fungi can biodegrade a broad range of environmental contaminants. This work addresses this by concentrating on novel and effective optimal conditions for <i>Trametes cingulata</i> to produce oxidative enzymes and the capacity to decolorize the azo dye reactive red 239.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>A multifactorial experimental design optimized enzymatic activity and azo dye decolorization. Concentrations of 2.5 g L⁻¹ of copper sulfate (CS) and 3.0 g L⁻¹ of yeast extract (YS) for 16 days produced 100% decolorization, with 7.72 U mL⁻¹ of laccase (Lac) and 0.013 U mL⁻¹ of lignin peroxidase (Lip). These were found to be the ideal conditions for the decolorization process. The maximal Lac activity was 12.22 U mL⁻¹ with 2.5 g L⁻¹ CS, 25.0 g L⁻¹ YS and 16 days, in addition to 0.14 U mL⁻¹ Lip activity and 59% decolorization. It was possible to ascertain that the dye's functional groups had been adsorbed to the fungal mycelium by employing Fourier transform infrared spectroscopy. Images obtained from scanning electron microscopy analyses enable the distinction of certain features that signify the adsorption process. Additionally, under ideal decolorization conditions, a 55% chemical oxygen demand decrease was noted.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The findings reported show that <i>T. cingulata</i> may decolorize effluents containing azo dyes using two distinct processes: fungal mycelium biosorption and enzymatic degradation. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"577-590"},"PeriodicalIF":2.8,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397019","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":"Ultrasound-assisted sol–gel synthesis of N-TiO2, Fe-TiO2, and TiO2 with application in treatment of a commercial effluent","authors":"Ananya Dey,&nbsp;Lakshay Vashishtha,&nbsp;Parag R Gogate","doi":"10.1002/jctb.7808","DOIUrl":"https://doi.org/10.1002/jctb.7808","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Nitrogen doped titanium dioxide (N-TiO₂), iron doped titanium dioxide (Fe-TiO₂), and undoped titanium dioxide (TiO₂) nanocatalysts were synthesized using sol–gel method aided with ultrasound (US). The effects of duty cycle, US-power, and US irradiation time on catalyst characteristics were investigated so as to establish the best synthesis conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The optimum parameters for minimum mean size of catalyst particles were 60% duty cycle, 100 W power, and 20 min as irradiation time. X-Ray diffraction (XRD) analysis revealed that the primary phase of all nanocatalysts was anatase with crystallite size as 46.29 nm, 54.32 nm, and 56.17 nm for N-TiO₂, Fe-TiO₂, and undoped TiO₂, respectively. Field electron scanning electron microscopy (FE-SEM) images confirmed that N-TiO₂ is a mixture of TiO₂ microspheres and rice-like structures whereas Fe-TiO₂ and undoped TiO₂ were spherical. X-ray photoelectron spectroscopy (XPS) study showed that both N-TiO₂ and Fe-TiO₂ exhibited minor shifts to lower binding energies when compared to the spectra of undoped TiO₂. The application studies for obtained catalysts using simple ultrasonic horn and disc horn coupled with oxidants revealed best results (51.67% reduction in COD) using disc horn for N-TiO₂ catalyst obtained using ultrasound at pH of 12 and addition of a 20 mL per L⁻¹ dose of H₂O₂.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Doping TiO₂ with metal and non-metal ions coupled with using ultrasound in synthesis improved the catalytic activity with maximum COD reduction of commercial effluent obtained for disk horn + N-TiO₂ + H₂O₂ based approach. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 4","pages":"697-716"},"PeriodicalIF":2.8,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717348","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":"Ion-imprinted chelating resin for targeted adsorption of lanthanum ions: synthesis, characterization, and application","authors":"Rua B Alnoman","doi":"10.1002/jctb.7810","DOIUrl":"https://doi.org/10.1002/jctb.7810","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Lanthanum ions (La³⁺) are of great importance in many applications, so development of effective sorbents for selective recovery of La³⁺ is urgently required. In this work, an ion-imprinted polymeric sorbent of La-RSPY with secondary amine, phenolic, and pyridyl groups was synthesized through a Schiff base reaction between 4-aminoresorcinol and pyridine-2-carboxaldehyde, followed by reduction, La³⁺ complexation, and base-catalyzed polymerization with resorcinol/formaldehyde.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>La-RSPY showed impressive selectivity to La³⁺ from competitive ions like Gd³⁺, Ru³⁺, Pr³⁺, Eu³⁺, Nd³⁺, Cd²⁺, Zn²⁺, and Cu²⁺ in mixed-ion systems with an adsorption capacity of 200 ± 1 mg g⁻¹. Its adsorption behavior was successfully modeled using the Sips isotherm, while the pseudo-second-order kinetics further confirmed the efficiency of the process. Spectroscopic analysis using NMR, FTIR, and SEM also confirmed that the integrity of the sorbent was unaffected. Such better performance is due to the CN, <span></span>NH<span></span>, and <span></span>OH groups that give rise to stable La³⁺ complexes and imprinted spatial configurations tailored for La³⁺ binding.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>La-RSPY has great promise for applications in analytical chemistry, food safety, wastewater treatment, and environmental remediation. Scaling up synthesis, optimizing processes, and collaboration with industries specializing in rare earth recovery or water treatment would increase its practical deployment and widen its commercial circle. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 4","pages":"717-731"},"PeriodicalIF":2.8,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717301","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":"Correction to ‘Reusing ceramic waste in fired brick and as cement additive’","authors":"","doi":"10.1002/jctb.7806","DOIUrl":"https://doi.org/10.1002/jctb.7806","url":null,"abstract":"<p>\u0000 <span>Zoqi, MJ</span>, <span>Doosti, MR</span>, <span>Reusing ceramic waste in fired brick and as cement additive</span>. <i>J Chem Technol Biotechnol</i> <span>2024</span>; <span>99</span>: <span>649</span>–<span>57</span>.</p><p>Mohamad Hossein Shoja Taghi Abad has been added as a co-author to this article due to his contribution during the research phase of the study. This inclusion rectifies an oversight in the original publication.</p><p>The corrected author list and their affiliation is as follows:</p><p>Mohamad Javad Zoqi,¹ Mohammad Reza Doosti,¹ Mohamad Hossein Shoja Taghi Abad¹</p><p>¹Department of Civil Engineering, University of Birjand, Birjand, Iran</p><p>We apologize for this error.</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"666"},"PeriodicalIF":2.8,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7806","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396758","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":"Fabrication of thin-film composite mixed matrix membrane with 2D magnesium oxide for gas separation application","authors":"Muhd Izzudin Fikry Zainuddin,&nbsp;Abdul Latif Ahmad,&nbsp;Mohamad Alif Adnan","doi":"10.1002/jctb.7807","DOIUrl":"https://doi.org/10.1002/jctb.7807","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Increased concentration of carbon dioxide (CO₂) emission leads to climate change. Hollow-fibre membrane technology seems feasible due to its high packing density, facile processability and easily tuneable properties. A mixed matrix membrane is designed to overcome the balance of solution–dissolution phenomena. However, ensuring optimized dispersion of fillers at the outermost selective skin layer region appears to be challenging. In this study, a thin-film composite mixed matrix membrane (TFCMMM) is fabricated with a facile dip-coating method comprising a PES substrate, polydimethylsiloxane (PDMS) coating layer and magnesium oxide (MgO) nanosheet as the additive filler in the coating layer.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The loading of the MgO nanosheet was varied from 0 to 10 wt% in the PDMS coating solution. Mixed gas performance showed a similar trend to the single gas permeation test, with lower gas permeance and selectivity due to the effect of competitive sorption between the binary gas mixtures. The permeance–selectivity trade-off was absent until the MgO loading of 1.00 wt%, when CO₂/N₂ and CO₂/CH₄ improved by 35.13% and 27.55%, respectively, over pristine TFCMMM. When the MgO loading was increased beyond 2.5 wt%, filler agglomeration and leaching caused the formation of non-selective voids, reducing CO₂/N₂ and CO₂/CH₄ selectivity. The improvement in selectivity observed in this study was due to an increased tortuous pathway of the gas penetrant due to the presence of a high-aspect-ratio MgO nanosheet, resulting in slower diffusion of gas through the PDMS selective layer of the TFCMMM.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Our findings provide additional insights into the fabrication of TFCMMM using an MgO nanosheet as an additive filler in the coating layer, specifically for CO₂/N₂ and CO₂/CH₄ separation. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"654-665"},"PeriodicalIF":2.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396829","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":"Emission characteristics of ethanolamine and ammonia in CO2 capture process by chemical absorption based on ethanolamine solution","authors":"Xiaowen Yu,&nbsp;Hao Wu,&nbsp;Wenrui Li,&nbsp;Hongmin Yang","doi":"10.1002/jctb.7809","DOIUrl":"https://doi.org/10.1002/jctb.7809","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The massive emission of greenhouse gases represented by CO₂ has led to many environmental and climate problems. Chemical absorption after combustion has become an effective method for CO₂ capture. Meanwhile, this method also leads to potential emission of pollutants, consisting mainly of ethanolamine (MEA) and ammonia (NH₃). However, few studies focus on the emission characteristics of pollutants in chemical absorption systems and the factors influencing the emissions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>In this experiment, MEA and NH₃ emissions during the CO₂ capture process by the chemical absorption method under different conditions, such as flue gas and absorbent solution temperature, liquid-to-gas ratio, CO₂ concentration in the flue gas, and absorbent CO₂ loading, were investigated. The results indicate that the MEA and NH₃ are released during the CO₂ capture process, and the amount of release varies with many parameters. Under typical conditions, the emissions of MEA and NH₃ were stabilized at 85.8 and 21.5 mg Nm⁻³, respectively. The emissions of MEA and NH₃ increased steadily with the temperature of the flue gas and increasing absorbent solution. Higher liquid-to-gas ratio led to more MEA and NH₃ emissions, and higher absorbent CO₂ loading could inhibit the MEA and NH₃ emissions. Calculation of the maximum reduction rate also showed that CO₂ loading has the greatest impact on pollutant emissions, and optimizing it reduces pollutant emissions by at least 40%.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>It was found that pollution emissions can be controlled by optimizing operating parameters, which can provide a reference for reducing pollutant emissions in the industry. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 4","pages":"688-696"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717083","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":"Polyaniline-modified anodes for brewery waste treatment in microbial fuel cells: insights into inoculum selection, cell configuration, and lactic acid valorization","authors":"I. Rafael Garduño-Ibarra,&nbsp;Shruti Tanga,&nbsp;Alexandra Tsitouras,&nbsp;Chris Kinsley,&nbsp;Elena Baranova","doi":"10.1002/jctb.7805","DOIUrl":"https://doi.org/10.1002/jctb.7805","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>This study focuses on the treatment of brewery waste slurries (BWS) with high chemical oxygen demand (COD) using a single-chamber microbial fuel cell (MFC) inoculated with heat-treated anaerobic seed sludge. A co-substrate of 5 g L⁻¹ glycerol was added, and carbon felt (<i>CF</i>) was employed as the anode material, enhanced through <i>in situ</i> polymerization of aniline (PANI/<i>CF</i>). Additionally, the adsorption of ruthenium dioxide nanoparticles onto the modified <i>CF</i> was assessed (PANI-RO/<i>CF</i>).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Tests conducted at room temperature (19 °C to 22 °C) achieved an average COD reduction of 36%. The PANI-RO/<i>CF</i> electrode accumulated 24% more charge, resulting in the highest coulombic efficiency of 75.1%, significantly exceeding similar studies. However, the PANI-modified anode generated more energy, exceeding that of the bare <i>CF</i> by more than double, reaching 57.1 mW m⁻². An optimized working volume was identified in relation to other reported works. Microbial population analysis revealed an interaction between <i>Staphylococcus epidermidis</i> and a rarely reported psychrophilic <i>Bacillus</i> species. After 30 h, lactic acid emerged as the main by-product, with a concentration of 7.5 ± 0.6 g L⁻¹.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSIONS</h3>\u0000 \u0000 <p>These findings highlight an optimization approach based on cell configuration and inoculum selection, as well as a significant valorization pathway that is frequently overlooked in the existing literature on brewery wastewater treatment using MFCs, particularly regarding the attractiveness of lactic acid production. © 2024 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":"100 3","pages":"508-516"},"PeriodicalIF":2.8,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397216","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}