Journal of chemical technology and biotechnology最新文献

{"title":"The role of chloride in calcium precipitation from drinking groundwater","authors":"Juan Ernesto Ramírez Juárez,&nbsp;Ángel Alfonso Villalobos de Alba,&nbsp;Roxana Ramírez Rodríguez,&nbsp;Juan Armando Flores de la Torre,&nbsp;Víctor Hugo Baltazar Hernandez,&nbsp;Francisco J. Cervantes","doi":"10.1002/jctb.7803","DOIUrl":"https://doi.org/10.1002/jctb.7803","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Chloride is present in many water sources. In addition, the use of hypochlorite as a disinfectant for drinking water increases its chloride concentration. However, the effect of this prevalent ion on Ca precipitation in drinking water is poorly described, and its effect, as a function of the Ca/Mg ratio, which drives Ca precipitation, has not been studied. Accordingly, Ca precipitation was studied using batch assays at different concentrations of chloride and hypochlorite for Ca/Mg ratios of 4.0 and 1.1. The assays were performed at 20 and 25 °C. Chemical speciation analysis was performed using Visual MINTEQ software, and precipitates derived from the process were analyzed by X-ray diffraction.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Ca precipitation was influenced by the Cl⁻ concentration, causing an oversaturation of CaCO₃ with a trend to a maximum. The highest Ca precipitation was achieved at a Ca/Mg ratio of 4.0, obtained at an initial Cl⁻ concentration of 50 mg L⁻¹, both at 20 and 25 °C. For a Ca/Mg ratio of 1.1, the highest precipitation occurred at initial Cl⁻ concentrations of 10–15 mg L⁻¹ at 20 °C and 20 mg L⁻¹ at 25 °C. In ClO⁻ experiments, Ca precipitation increases proportionally with hypochlorite dosage. Greater Ca precipitation is observed at Ca/Mg = 4.0 compared to Ca/Mg = 1.1. The proportion of aragonite or calcite in the precipitates obtained depends on the presence of Cl⁻ and ClO⁻ as well as on the Ca/Mg ratio.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Chloride affects Ca precipitation by oversaturation, and the precipitation of CaCO₃ species depends on the concentration of Mg. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"635-644"},"PeriodicalIF":2.8,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397227","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":"Separation of cadaverine from fermentation broths by salting-out","authors":"Huijie Zheng,&nbsp;Hansheng Liu,&nbsp;Xueqi Shi,&nbsp;Shuwen Liu,&nbsp;Weiyi Su,&nbsp;Hao Li","doi":"10.1002/jctb.7801","DOIUrl":"https://doi.org/10.1002/jctb.7801","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Cadaverine is an important diamine to synthesize nylon. However, the lower product concentration in the cadaverine production makes the downstream separation more complex and costly, and has become a bottleneck for large-scale production. Therefore, in this study, the salting-out was used to efficiently separate cadaverine in the simulated fermentation broth.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>After analyzing the pH of readily soluble potassium salts, three alkaline salting-out agents—K₃PO₄, K₂CO₃ and K₄P₂O₇—were utilized to perform the salting-out separation of cadaverine. The effects of the type and concentration of salting-out agents and cadaverine concentration on the distribution and selection behavior of cadaverine in the simulated fermentation broth were investigated. Particularly, when the concentration of cadaverine was 10 wt% and the K₃PO₄ concentration was 500 g/kg, the recovery rate of cadaverine in the simulated fermentation broth with K₃PO₄ salting-out agent was as high as 99.6%, which was significantly higher than that of other salting-out agents, and only 0.01 wt% cadaverine remained in the aqueous phase.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The salting-out ability of the three inorganic salts to cadaverine in the simulated fermentation broth was K₃PO₄&gt;K₂CO₃&gt;K₄P₂O₇. Furthermore, within a certain range of cadaverine concentrations, the content of cadaverine in the aqueous phase and the amount of water residue in the organic phase could be calculated using a linear regression equation. Since inorganic salts have the advantages of good stability, low cost, non-toxicity and harmlessness, the salting-out process established in this study shows good potential for industrial application. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"615-624"},"PeriodicalIF":2.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397219","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":"Exploring the influence of different vegetable oils on the stability of nanoemulsions in the presence and absence of nisin and limonene","authors":"Dimitra Giannopoulou,&nbsp;Anastasia Lampropoulou,&nbsp;Myrto Maragou,&nbsp;Athanasia Koliadima","doi":"10.1002/jctb.7804","DOIUrl":"https://doi.org/10.1002/jctb.7804","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Contamination during food production and handling is a major health concern. Traditional preservation methods often influence food quality as well as their organoleptic characteristics. In contrast, natural alternatives like bacteriocins and essential oils are emerging. Nisin, a natural antimicrobial agent, is effective against Gram-positive bacteria but not against Gram-negative bacteria. Moreover, essential oils like limonene, although they have broad antimicrobial properties, are not water-soluble and affect the sensory properties. Encapsulation in oil-in-water nanoemulsions offers a promising approach, enhancing the stability, solubility, and functionality of these natural antimicrobial agents.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Different concentrations of olive, corn, and sesame oils were used in the presence or absence of nisin and limonene. Parameters such as droplet size, polydispersity index, zeta potential, and cream index were assessed. Oil type and concentration played a crucial role in the stability and properties of produced nanoemulsions. Sesame oil-based emulsions showed superior stability, while olive oil-based emulsions performed well at lower concentrations. Nisin reduced droplet size, while limonene increased it, with combined use yielding intermediate results.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The properties and stability of oil-in-water nanoemulsions using olive, corn, and sesame oils at varying concentrations, with and without nisin and limonene, were investigated. Sesame oil-based nanoemulsions exhibited stable droplet size and lower polydispersity index values, while nisin reduced droplet size and limonene increased it. Stability assessments favoured olive oil-based formulations at low oil concentrations (2% v/v). These findings provide insights into optimizing nanoemulsion formulations for food and pharmaceutical applications. © 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":"645-653"},"PeriodicalIF":2.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7804","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397220","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":"CO2 capture by new ternary nanocomposite LDH/bayerite/Ag2O in tetrametallic NiZnAgAl layered double hydroxides fabricated via in situ growth","authors":"Muh. Nur Khoiru Wihadi,&nbsp;Muh. Khoirul Maza,&nbsp;Grasianto Grasianto,&nbsp;Muhammad Ihsan Sofyan","doi":"10.1002/jctb.7800","DOIUrl":"https://doi.org/10.1002/jctb.7800","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Carbon dioxide exerts the most substantial environmental influence of all greenhouse gases. Therefore, creating novel materials that exhibit minimal energy requirements, robust CO₂ capture efficiency, outstanding adsorption and selectivity, economic viability and rapid scalability for applications in industry is important. This study aimed to fabricate the new ternary nanocomposite LDH/bayerite/Ag₂O in tetrametallic NiZnAgAl layered double hydroxide (LDH) using the hydrothermal method and to investigate its use for efficient CO₂ capture.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The results showed that tetrametallic NiZnAgAl LDH, bayerite and Ag₂O had grown and formed <i>in situ</i> ternary composites in the solid. Various characterization techniques confirmed the presence of tetrametallic NiZnAgAl LDH, bayerite and Ag₂O in the composites. The composites exhibit surface areas ranging from 153.34 to 255.02 m² g⁻¹, pore volumes ranging from 0.19 to 0.26 cm³ g⁻¹ and pore diameters ranging from 4.06 to 4.93 nm. Each composite has a laminar arrangement of stacked flakes, and the surface of the composite is covered with silver oxide. Transmission electron microscopy images exhibit the nano-hexagonal construction of the composites. The selected area electron diffraction profile exhibited congruence with the X-ray diffraction data of LDH, bayerite and Ag₂O. The composites have an average particle size that ranges from 22.79 to 41.84 nm. The ternary composite exhibits CO₂ capture activity with adsorption capacities ranging from 5.88 to 8.29 mmol g⁻¹. We observed that variations in the molar ratios of Ni, Zn and Ag affected the properties of the composites.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Overall, the new ternary nanocomposites LDH/bayerite/Ag₂O in tetrametallic NiZnAgAl LDH exhibit promising potential for CO₂ capture applications. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"604-614"},"PeriodicalIF":2.8,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396972","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":"Optimization and kinetic study of nitrate removal from aqueous solution using tea waste","authors":"Lih Xuan Liew,&nbsp;Yin Fong Yeong","doi":"10.1002/jctb.7798","DOIUrl":"https://doi.org/10.1002/jctb.7798","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Nitrate contamination in groundwater poses significant risks to public health and the environment worldwide. This study explores the optimized use of tea waste, a byproduct of tea extraction and consumption, as an adsorbent for the removal of nitrate from aqueous solutions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Scanning electron microscopy and Brunauer–Emmett–Teller (BET) analysis revealed that tea waste has irregular cluster cavities and visible pore formations, indicating numerous active sites for nitrate adsorption. The specific surface area, total pore volume, and pore diameter were found to be 2.4914 m² g⁻¹, 0.0036 cm³ g⁻¹, and 9.8077 nm, respectively. A total of 20 adsorption experiments were conducted based on conditions recommended by a statistical tool using Design-Expert 13.0 software. The data showed a strong fit to a quadratic model, with a significant <i>P</i>-value of 0.0109 and a high determination coefficient (<i>R</i>² = 0.9327). Using response surface methodology, the study achieved a maximum nitrate removal efficiency of 84.49% under optimal conditions, which included an initial nitrate concentration of 50 mg L⁻¹, an adsorbent weight of 0.706 g, and a contact time of 15 min. Further analysis of adsorption isotherms and kinetics revealed that the Freundlich isotherm (<i>R</i>² = 0.9556) and the pseudo-second-order kinetic model (<i>R</i>² = 0.9454) best described the experimental data.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>These findings indicate that tea waste is an effective and sustainable adsorbent for mitigating nitrate contamination in aqueous solutions, offering a promising approach to address water quality challenges globally. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"591-603"},"PeriodicalIF":2.8,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396971","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":"Preparation of MgAl-LDH/halloysite composite materials for efficient CO2 adsorption","authors":"Wenjie Liu,&nbsp;Yao Zhou,&nbsp;Weifeng Gong,&nbsp;Tongtong Tang,&nbsp;Yu Yang,&nbsp;Chao Yao,&nbsp;ShiXiang Zuo,&nbsp;Xiazhang Li","doi":"10.1002/jctb.7802","DOIUrl":"https://doi.org/10.1002/jctb.7802","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>CO₂ emissions have had negative impacts on various aspects of life and the environment, making the development of materials with high CO₂ adsorption performance crucial.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>In this study, halloysite nanotubes (HNTs) were used as a carrier to prepare MgAl layered double hydroxide (LDH) via a convenient coprecipitation method, resulting in MgAl-LDH/HNT composite material, which was then evaluated for its CO₂ adsorption performance. The physicochemical properties of the composite material were characterized using various methods. Results showed that the 1:1 ratio MgAl-LDH/HNT composite exhibited superior material structure, with a specific surface area reaching 178.24 m² g⁻¹. In CO₂ adsorption performance tests, the 1:1 MgAl-LDH/HNT composite showed the best adsorption performance, with a CO₂ adsorption capacity of 3.91 mmol g⁻¹. This adsorption process includes physical adsorption and chemical adsorption. Kinetic analysis results indicate that the adsorption process is mainly dominated by physical adsorption. The material also demonstrated good performance in cyclic stability tests, maintaining a regeneration efficiency of over 94% after six cycles.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The MgAl-LDH/HNT material has good properties and stability. This provides an effective pathway and direction for the development of new adsorbents with higher CO₂ adsorption performance. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"625-634"},"PeriodicalIF":2.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397218","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 novel magnetic bifunctional hydrochar catalyst derived from palm leaf residue for biodiesel production: kinetic and thermodynamic studies","authors":"Muhammad Aliyu,&nbsp;Umer Rashid,&nbsp;Toshiki Tsubota,&nbsp;Wan Azlina Wan Ab Karim Ghani,&nbsp;Mohamad Amran Mohd Salleh,&nbsp;Duy Anh Khuong,&nbsp;Kieu Trang Trinh,&nbsp;Nguyen Trung Duc,&nbsp;Daisuke Tashima,&nbsp;Tomi Ryu","doi":"10.1002/jctb.7792","DOIUrl":"https://doi.org/10.1002/jctb.7792","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Novel magnetic bifunctional hydrochar-based catalysts were produced from activated hydrochar derived from palm leaf residue (PLRAH) via a wet impregnation technique and used to perform one-step waste cooking oil (WCO) transesterification to produce biodiesel. The magnetic bifunctional hydrochar-based catalysts were evaluated for their acid–base properties, crystallinity, functional groups, magnetism, textural properties, thermal stability, chemical composition, and morphology.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The PLRAH-Fe₂O₃/K₂O magnetic catalyst performed well in thermal testing, with a large specific surface area of 111.08 m² g⁻¹ and its high basicity value of 7.34 mmol g⁻¹, as well as an acidity value of 12.67 mmol g⁻¹, significantly contributed to the WCO transesterification. An optimum biodiesel yield of 98.36% was obtained under the following conditions: catalyst loading of 3 wt%, a methanol-to-WCO molar ratio of 12:1, and a reaction temperature of 75 °C for a duration of 4 h and biodiesel yields maintained at &gt;80% after five cycles. The produced biodiesel complied with the physicochemical properties stated in ASTM D6751. The kinetic study also revealed that WCO transesterification using the one-step approach had a pseudo-first order and activation energy (<span></span><math>\u0000 <mrow>\u0000 <msub>\u0000 <mi>E</mi>\u0000 <mi>a</mi>\u0000 </msub>\u0000 </mrow></math>) of 24.27 kJ mol⁻¹. Furthermore, the thermodynamic variables, including Gibbs free energy (∆<i>G</i>^o), enthalpy (∆<i>H</i>^o), and entropy (∆<i>S</i>^o) of WCO transesterification, were found to be 7.60 kJ mol⁻¹, 24.27 kJ mol⁻¹, and −21.78 J mol⁻¹ K, respectively. This suggests that WCO transesterification was an endothermic and non-spontaneous process.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The synthesized magnetic bifunctional hydrochar-based catalyst demonstrated outstanding performance for WCO transesterification, highlighting its potential for efficient biodiesel production. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"530-544"},"PeriodicalIF":2.8,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397103","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":"Welcoming the new year with Volume 100 of JCTB: challenges and perspectives","authors":"Dionissios Mantzavinos","doi":"10.1002/jctb.7783","DOIUrl":"https://doi.org/10.1002/jctb.7783","url":null,"abstract":"","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 1","pages":"5"},"PeriodicalIF":2.8,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860948","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":"Extractive rectification using DES for benzene-cyclohexane-cyclohexene ternary azeotropic system","authors":"Wang Haiou,&nbsp;Xu Yang,&nbsp;Sang Weihe,&nbsp;Li Hao,&nbsp;Fang Jing","doi":"10.1002/jctb.7774","DOIUrl":"https://doi.org/10.1002/jctb.7774","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Benzene, cyclohexane, and cyclohexene are ternary azeotropic systems, which cannot achieve high-purity separation by ordinary distillation, but this issue can be solved by extractive distillation. Deep Eutectic Solvents (DES) is a ‘green solvent’ that has emerged in recent years and is often used as an extractant.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>In this study, the COSMO-SAC solvation model was used to calculate the infinite dilution activity coefficients (γ∞) of DES with different compositions to screen suitable DES, and the effect was demonstrated by vapor–liquid equilibrium experiment (VLE). In addition, the effect of intermolecular interactions was explored in this study by means of independent gradient (IGM) equivalence plot, and process simulations were carried out by means of Aspen Plus software.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>VLE experiments showed that the combination of DES extractants tetrabutylphosphonium bromide: levulinic acid (1:4) and tetrabutylammonium bromide: cyclobutyl sulfone (1:4) could break the azeotropic relationship of benzene, cyclohexane, and cyclohexene ternary systems. In addition, using Aspen process simulation to compare the screened DES extractant with the industrially used dimethylacetamide (DMAC) extractant, the use of the screened DES extractant was able to reduce the condenser and reboiler energy consumption by 14.93%. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"327-343"},"PeriodicalIF":2.8,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114019","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":"Comparison between produced Tingui biochar versus commercial Norit in the adsorption of acetaminophen and diclofenac: characterization, batch, and fixed bed system","authors":"Débora Federici dos Santos,&nbsp;Wardleison Martins Moreira,&nbsp;Thiago Peixoto de Araújo,&nbsp;Maria Manuel Serrano Bernardo,&nbsp;Isabel Maria de Figueiredo Ligeiro da Fonseca,&nbsp;Indianara Conceição Ostroski,&nbsp;Maria Angélica Simões Dornellas de Barros,&nbsp;Eduardo Falabella Sousa-Aguiar","doi":"10.1002/jctb.7794","DOIUrl":"https://doi.org/10.1002/jctb.7794","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>In pressing environmental challenges, practical solutions to remove organic contaminants from water are paramount. This study undertook a crucial task of comparing two adsorbents: BT-KOH, synthesized from Tingui bark activated with potassium hydroxide, and Norit commercial carbon. The comparison was based on experimental data from adsorption kinetics and isotherm tests in batch and fixed bed systems, targeting the removal of acetaminophen and diclofenac. Physico-chemical characterization analyses of the materials were also conducted to enhance the comparison.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The study's key finding was the superior performance of BT-KOH over Norit in removing acetaminophen and diclofenac. The maximum adsorption capacities for acetaminophen were 357.7 mg g⁻¹ for BT-KOH and 226.3 mg g⁻¹ for Norit. For diclofenac, these values were 250.6 mg g⁻¹ for BT-KOH and 220.9 mg g⁻¹ for Norit. This superiority was attributed to BT-KOH's larger specific surface area and higher quantities of oxygen-containing functional groups.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The result underscores the importance of considering the physical–chemical composition of materials in the quest for more effective and sustainable water treatment methods. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"555-567"},"PeriodicalIF":2.8,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397162","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}