Journal of chemical technology and biotechnology最新文献

{"title":"Advances in food azo dye detection through nanoparticle modified electrochemical sensors with a focus on sustainable nano-materials","authors":"Tanya Girish,&nbsp;Spandana V. Prasad,&nbsp;Nivedita I. Patil,&nbsp;Deepthi Shetty,&nbsp;Sneha Nayak","doi":"10.1002/jctb.7887","DOIUrl":"10.1002/jctb.7887","url":null,"abstract":"<p>Azo dyes are widely employed as colorants predominantly in food and beverage industries owing to their vividity and versatility. They are the largest class of dyes and form a major group among the colourants certified by the Food and Drug Administration authority. These vibrant dyes are popular due to their stability, consistency and low cost. Despite their benefits such as improving the appearance and aesthetic value of consumer foods, they are hazardous to human health as well as the environment. They are proven to cause carcinogenic and mutagenic effects in the long run alongside causing allergic reactions. Hence, strict regulations have been brought forth in order to monitor and control the employment of these dyes in food products. Nanomaterial-based electrochemical sensors are used for azo dye detection due to their sensitivity and selectivity in determination of azo dyes in food. Preparation of nanomaterials through conventional methods produces hazardous chemicals. Hence, there is a need to devise eco-friendly routes of nanoparticle synthesis in order to ensure sustainability and circular economy. This review throws light on the efficacy of nano-based electrochemical detection of azo dyes in various food matrices and emphasizes the significance of sustainable nanomaterials. © 2025 Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 10","pages":"1989-2003"},"PeriodicalIF":2.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062818","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":"Dynamic modeling, kinetics estimation, and uncertainty analysis of batch fermentation for optimal production of a novel co-polymeric dipeptide from a thermophilic bacterium","authors":"Subhranshu Samal,&nbsp;Prakruti B Sambal,&nbsp;Vivek Rangarajan,&nbsp;Riju De","doi":"10.1002/jctb.7892","DOIUrl":"10.1002/jctb.7892","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Biopolymers produced from a thermophilic bacterium induce better thermal stability and tensile strength than those produced from mesophilic bacterium. Developing dynamic models is crucial to providing an optimal design and scale-up of a batch fermenter targeting biopolymer synthesis. This study aims to formulate certain dynamic models for the production of a novel copolymeric dipeptide (poly-γ-glutamic acid) while investigating the batch fermentation kinetics of <i>Bacillus licheniformis</i>.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Batch experiments were conducted at temperatures of 40 and 50 °C under varied glucose concentrations supplemented with nitrogen, which determined a maximum cell growth and higher biopolymer yield at optimal conditions of 50 °C and 80 g L⁻¹ of glucose. The kinetics of dual substrate consumption, biomass growth, and biopolymer synthesis were estimated by fitting three dynamic models, namely, Monod multiplicative with Haldane inhibition, Bertolazzi, and Volterra to the experimental data. A global sensitivity analysis (GSA) was subsequently performed, which identified the impact of kinetic parametric uncertainties on the endpoint poly-γ-glutamic acid concentration.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The Volterra model revealed the best fits, as confirmed by a high coefficient of determination (<i>R</i>² &gt; 0.98) and minimum corrected-Akaike's information criterion (AIC_c = −194.78) compared to the other models. The GSA results revealed that the maximum cell concentration, growth-associated term of the product formation, and the initial nitrogen concentration should be optimized with higher precision to yield an optimal biopolymer titer. This work facilitates the implementation of model-based optimization and control tasks, which could enhance the performance of an industrial-scale batch fermenter operated with a thermophilic bacterium. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 8","pages":"1618-1631"},"PeriodicalIF":2.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144646792","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":"Synthesis of MCM-41 and SBA-15 from rice husk silica and their carbon replicas for hydrogen adsorption","authors":"Juliana M. Juárez,&nbsp;Jhoan F. Téllez,&nbsp;Miguel Ángel Laguna Bercero,&nbsp;E. Laura Moyano,&nbsp;Marcos B. Gómez Costa","doi":"10.1002/jctb.7891","DOIUrl":"10.1002/jctb.7891","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Rice husk, an abundant agricultural by-product, presents a promising renewable silicon source for producing carbon-based materials through sustainable and eco-friendly approaches. Among emerging clean energy solutions, hydrogen storage remains a critical challenge for the practical deployment of hydrogen energy systems. This study explores the use of rice husk-derived silica to synthesize mesoporous nanostructured silicon materials and their corresponding carbon replicas. The goal is to develop efficient materials for hydrogen adsorption, with performance surpassing that of other biomass-derived carbons synthesized under comparable conditions – thereby offering a competitive and sustainable solution for hydrogen storage.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>A cost-effective, sustainable synthesis route was developed to produce siliceous templates MCM-41 and SBA-15 using cetyltrimethylammonium bromide and Pluronic P123 as surfactants. Their carbon replicas – rice husk ash (RHA)-MCM-41 and RHA-SBA-15 – were fabricated via a nanocasting method employing sucrose as a carbon source. The resulting materials were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption–desorption techniques. Notably, the synthesized mesoporous carbons, RHA-CMK-3 and RHA-RMCM-41, exhibited high surface areas ranging from 800 to 1400 m²g⁻¹ and featured both mesoporous and microporous structures.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The synthesized carbon replicas demonstrated significant hydrogen adsorption capabilities. Among them, RHA-CMK-3 showed the highest hydrogen storage performance, reaching 3.6 wt% at 196.15 °C and 10 bar. These findings highlight the potential of rice husk-derived nanostructured carbons as efficient and sustainable materials for hydrogen storage applications. Moreover, the obtained materials exhibit hydrogen adsorption capacities surpassing those of other biomass-derived carbons synthesized under similar conditions, reinforcing their competitive advantage for energy storage solutions. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 8","pages":"1609-1617"},"PeriodicalIF":2.4,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144646963","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":"Pineapple stem-derived porous carbon for symmetrical supercapacitor: evaluation of the effect of activating agent on physicochemical and capacitive characteristics","authors":"Awitdrus Awitdrus,&nbsp;Agustino Agustino,&nbsp;Dian Selasih,&nbsp;Rakhamawati Farma,&nbsp;Zulkarnain Zulkarnain,&nbsp;Agus Sutikno","doi":"10.1002/jctb.7890","DOIUrl":"10.1002/jctb.7890","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Owing to the increasing demand for effective energy storage solutions to promote the transformation towards renewable energy sources, research on the development of electrode materials for supercapacitor devices has significantly increased. In this study, we promote a facile, eco-friendly and sustainable strategy for fabricating electrode materials from pineapple stem waste for supercapacitors via one-step chemical activation at high temperature. The pineapple stems were activated using KOH, NaOH and ZnCl₂ at molarity level of 0.5 mol L⁻¹, then heated at 800 °C for 3 h under N₂ protection to produce pineapple stem-based activated carbon (PSC).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>PSC-K (activated with KOH) exhibits the highest <i>S</i>_BET value of 945 m² g⁻¹ and <i>V</i>_tot of 0.475 cm³ g⁻¹. To evaluate the electrochemical activity of the supercapacitors, devices were designed with different constructions, i.e. symmetric and asymmetric. The PSC-K-based symmetric supercapacitor device exhibits a high specific capacitance of 255 F g⁻¹ at 1 A g⁻¹. Further, PSC-K also delivered an optimum <i>E</i>_d of 35.45 Wh kg⁻¹ at a <i>P</i>_d of 1.06 kW kg⁻¹, and <i>E</i>_d of 22.63 Wh kg⁻¹ at a <i>P</i>_d of 20.37 kW kg⁻¹.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>This work provides ubiquitous biomass-derived active carbon that can be widely used as electrode material in supercapacitors for future prospects. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 8","pages":"1598-1608"},"PeriodicalIF":2.4,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144646954","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":"Degradation of 2,4-dinitrotoluene by iron sulfide/manganese sulfide–biochar composites in the presence of persulfate and hydrogen peroxide","authors":"Seok-Young Oh,&nbsp;Do-Gyeom Kim","doi":"10.1002/jctb.7886","DOIUrl":"10.1002/jctb.7886","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Iron sulfide/manganese sulfide (FeS/MnS)–biochar composites were synthesized and their effectiveness at removing 2,4-dinitrotoluene (DNT) from water was evaluated. It was hypothesized that FeS/MnS–biochar composites have large surface areas for DNT sorption and reduction, and the capacity to promote persulfate- and hydrogen peroxide (H₂O₂)-mediated DNT oxidation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Compared to removal by biochar alone, the removal of DNT by 2 and 50wt.% FeS–biochar composites (1 g dosage) was enhanced via sorption and reduction by 37% and 48%, respectively. As the biochar increased the pH, however, the FeS–biochar composite was not as effective as FeS alone at removing DNT, indicating that an acidic medium may be necessary for the reductive removal of DNT by the FeS–biochar composite. In contrast, MnS and MnS–biochar composite were not as effective at reducing DNT as FeS and the FeS–biochar composite. FeS–biochar composites demonstrated good catalytic efficacy and enhanced persulfate- and H₂O₂-mediated DNT oxidation. The 50 wt% FeS–biochar composite (5 g dosage) removed 93% and 100% of DNT in the presence of persulfate/H₂O₂ (3 mmol L⁻¹), respectively, under the given conditions. Both the Fe²⁺ in the FeS and the carbon in the FeS–biochar composites contributed to the catalytic enhancement of the DNT oxidation. Radical quenching tests and electron paramagnetic resonance spectroscopic analysis revealed that sulfate (SO₄⁻∙) and hydroxyl (OH∙) radicals are dominant radical species to account for the enhancement of DNT oxidation. In contrast, neither Mn²⁺ nor S²⁻ in MnS and MnS–biochar composite worked as a catalyst to enhance the DNT oxidation by persulfate/H₂O₂.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The results of the present study indicate that FeS and FeS–biochar composites are promising as sorbents, reductants, and catalysts for the remediation of environmental DNT contamination. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 7","pages":"1516-1524"},"PeriodicalIF":2.4,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264350","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 highly effective and one-pot approach for 2,5-diformylfuran from fructose using CdS/Bi2MoO6-doped sulfonated carbon from sugarcane bagasse as a catalyst","authors":"Trinh Hao Nguyen,&nbsp;Diep Dinh Le,&nbsp;Mai Ngoc Thi Le,&nbsp;Duy Quoc Mai,&nbsp;Dao Anh Le Nguyen,&nbsp;Lap Chi Tran,&nbsp;Ha Bich Phan,&nbsp;Binh Phuong Nhan Nguyen,&nbsp;Phuong Hoang Tran","doi":"10.1002/jctb.7888","DOIUrl":"10.1002/jctb.7888","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The targeted synthesis of various multifunctional compounds from biomass is essential for facilitating processes that transform biomass into valuable compounds, replacing traditional fossil fuel sources. The conversion of carbohydrates to 2,5-diformylfuran (DFF) is a difficult and arduous process.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Here, we have successfully created the catalyst CdS/Bi₂MoO₆ grafted onto carbonaceous sulfonation from sugarcane bagasse. In this work, we established a heterogeneous catalytic approach to oxidizing fructose to DFF using CdS-Bi₂MoO₆@SBG-SO₃H as a catalyst and molecular oxygen as an oxidant. The catalysts were characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Furthermore, to assess the catalytic efficiency of the catalyst in the specific oxidation and dehydration of fructose, various key reaction factors, including reaction temperature, catalyst quantity, substrates concentration, reaction time, and solvent, were examined to choose the optimal reaction conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>A novel one-pot method of producing DFF directly from fructose through CdS-Bi₂MoO₆@SBG-SO₃H in 70% DFF yield within 10 h in dimethyl sulfoxide at 140 °C was devised. Furthermore, the catalysts have the potential for multiple uses, showing a slightly reduced efficiency when producing DFF from fructose in each subsequent run. Our research presented a one-pot method for synthesizing DFF from fructose with excellent yield, demonstrating significant promise for sustainable commercial applications. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 8","pages":"1584-1597"},"PeriodicalIF":2.4,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144646807","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":"Persulfate activation with catalyst derived from iron-rich municipal sludge for atrazine degradation","authors":"Xirong Qiu,&nbsp;Shanjun Liu,&nbsp;Jingwei Geng,&nbsp;Shan Sun,&nbsp;Ran Wei,&nbsp;Yejing Zhang,&nbsp;Jianlin Zhang","doi":"10.1002/jctb.7885","DOIUrl":"10.1002/jctb.7885","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Advanced oxidation technology based on persulfate has potential application in the treatment of refractory wastewater. However, due to the high cost of persulfate activation, the promotion of this technology is limited. Economical and efficient persulfate activators need to be developed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>A highly efficient persulfate activator was prepared based on iron-rich municipal sludge, which could realize resource utilization of sludge. The removal rate of atrazine could achieve 81.3% within 2 h, and the reaction conditions were atrazine concentration of 4 mg L⁻¹, sodium persulfate concentration of 110 mg L⁻¹, and activator concentration of 100 mg L⁻¹.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The prepared activators had good pore structures and contained iron complexes, which enabled the effective activation of sodium persulfate for atrazine degradation. The activators were relatively stable, had a wide pH application range, and their activation efficiency could be significantly improved by increasing the temperature. The generation path of free radical mainly based on sulfate radical was speculated, and the possible mechanism of persulfate activation was proposed. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 7","pages":"1508-1515"},"PeriodicalIF":2.4,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264390","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":"Potential of deep eutectic solvents as green and sustainable solvents for the recovery of carboxylic acids from aqueous solution: a review","authors":"Saurabh Babu,&nbsp;Sushil Kumar","doi":"10.1002/jctb.7880","DOIUrl":"10.1002/jctb.7880","url":null,"abstract":"<p>This paper presents an in-depth exploration of the potential of deep eutectic solvents (DESs) as green and sustainable solvents in the reactive extraction process for the recovery of carboxylic acids from fermentation broth/aqueous waste stream. It delves into the eco-friendly nature and cost-effectiveness of DESs, highlighting their high solvation capabilities and aligning with sustainable practices. The various hydrophobic DESs/NADESs, examining their suitability for the extraction of carboxylic acids as the replacements of conventional solvents along with their preparation, are explored. The study emphasizes the appropriate selection of hydrogen bond donors (HBDs) and hydrogen bond acceptors (HBAs) in DES formulations to enhance the extraction efficiency. The role of physical properties of DESs such as viscosity, density, surface tension and ionic conductivity, which impact the mass transfer efficiency in the extraction of acids are discussed. In this review, the effect of various process parameters such as type of DES/carboxylic acid, initial acid concentration, pH, DES to aqueous phase ratio, temperature, stirring speed on the extraction of carboxylic acid along with possible extraction mechanism are extracted out. With exploration of recent studies on the extraction of acids using DESs, the efficient recovery of carboxylic acids and the excellent reusability of the DES for multiple extraction cycles is also discussed. The paper concludes with recommendations for future prospects, emphasizing the need to optimize DES compositions and intensified reactive extraction technologies with scale up for practical and efficient carboxylic acid recovery. © 2025 Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 8","pages":"1541-1562"},"PeriodicalIF":2.4,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647780","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":"Organic matter removal from water by adsorption onto a composite carbon–silica","authors":"Mouna Jaouadi,&nbsp;Mounir Hajji","doi":"10.1002/jctb.7883","DOIUrl":"10.1002/jctb.7883","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Water is one of the most valuable substances in the world. Organic matter is becoming increasingly important in drinking water treatment where it affects the quality of water. Removal of organic matter from drinking water by adsorption onto modified activated carbon (AC) is a widespread water treatment technology.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The AC surface was coated with silica to improve its physicochemical properties. These properties of AC were characterized by N₂ adsorption desorption measurements, X-ray diffraction, infrared and Raman spectroscopy, and measurements of pH of the point zero charge. AC–silica exhibited a meso-microporous surface. ACs were tested for organic matter removal in aqueous solution. The results showed that the silica was introduced successfully into microporous carbon materials and high adsorption capacity of AC–silica was obtained. Fourier transform infrared spectra confirmed that organic matter diffused into the carbon surface and was adsorbed mostly by physisorption and partially by chemisorption, with alteration of the carbon structure. AC–silica composite was more efficient in the removal of chemical oxygen demand and heavy metals than AC. Total organic matter was removed by adsorption, and AC-supported silica was superior (∼100%) to raw AC (∼50.36%), and could be explored to remove contaminants from wastewater.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Modified AC allowed a high capacity for organic matter removal from water. This opens new perspectives in the field of adsorbent materials, in order to prepare very efficient carbon adsorbents for environmental organic matter remediation. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 7","pages":"1491-1499"},"PeriodicalIF":2.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264686","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":"Solubility, metastable zone, and cooling crystallization process of dodecanedioic acid investigated by focused-beam reflectance measurement technology","authors":"Jiulong Duan,&nbsp;Miaomiao Zhu,&nbsp;Xingjie Ma,&nbsp;Lihong Liu,&nbsp;Jin Huang","doi":"10.1002/jctb.7881","DOIUrl":"10.1002/jctb.7881","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Dodecanedioic acid (DC₁₂) is widely used as a chemical intermediate in nylon synthesis but its separation and purification are crucial for producing high-quality DC₁₂. Herein, the solubility characteristics of DC₁₂ in various solvents (ethanol, isopropanol, ethyl acetate, 1,4-dioxane, Dimethyl sulfoxide (DMSO), and <i>N</i>,<i>N</i>-dimethylformamide (DMF)) were investigated by focused-beam reflectance measurement technology.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Based on the results of solubility data simulation to the modified equations of Apelblat and <i>λh</i>, the former equation model of Apelblat yielded the best-fitting performance. Subsequently, thermodynamic properties of DC₁₂ in the six solvents were investigated and the results identified increasing endothermic and entropy as the dissolution processes of DC₁₂ in all solvents. The thermodynamic analyses also revealed 1,4-dioxane as the best solvent for the cooling crystallization of DC₁₂. The measured metastable zone width (MSZW) of DC₁₂ cooling crystallization in 1,4-dioxane displayed a decline as a function of the decrease in cooling rate and increase in stirring speed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The optimal process parameters for the cooling crystallization of DC₁₂ in 1,4-dioxane were determined as solid–liquid ratio of 1:5 g mL⁻¹, stirring speed of 200 rpm, and solution preparation temperature of 70 °C. To the best of our knowledge, the proposed method for crystallization of DC₁₂ with 1,4-dioxane solvent is reported for the first time and has potential for future industrial application in DC₁₂ production. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 7","pages":"1482-1490"},"PeriodicalIF":2.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264706","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}