Journal of chemical technology and biotechnology最新文献

{"title":"Dissolution and separation of carbon dioxide in biohydrogen by monoethanolamine-based deep eutectic solvents","authors":"Xiaokai Zhou,&nbsp;Yanyan Jing,&nbsp;Cunjie Li,&nbsp;Quanguo Zhang,&nbsp;Yameng Li,&nbsp;Tian Zhang,&nbsp;Kai Zhang","doi":"10.1002/jctb.70059","DOIUrl":"https://doi.org/10.1002/jctb.70059","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>The presence of CO₂ in biohydrogen reduces hydrogen purity, thereby limiting its application in fuel cells, hydrogen-enriched water and other advanced energy sectors. To improve biohydrogen purity, the solubility of pure CO₂ under different molar ratios, temperatures and aqueous deep eutectic solvents (DESs) concentrations were studied, and a response surface optimization experiment was carried out. Subsequently, aqueous DESs were utilized to investigate the decarbonization and purification of biohydrogen at varying temperatures and biohydrogen flow rates.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The results demonstrated that the DESs composed of acetamide and monoethanolamine (A-MEA) exhibited effective CO₂ solubility properties at 65 °C. Upon the addition of water, the viscosity of A-MEA was significantly reduced, improving its fluidity. Notably, the optimum CO₂ dissolution temperature of aqueous A-MEA decreased to 40 °C. Optimal purification performance was achieved when biohydrogen was passed through 40% aqueous A-MEA at a flow rate of 100 mL min⁻¹. Under these conditions, hydrogen purity increased from 60.00% to over 99.00% and was sustained for 21 min. Simultaneously, the CO₂-dissolving capacity of the solvent reached 0.311 g CO₂ g⁻¹ A-MEA.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Aqueous A-MEA is an efficient CO₂ absorbent that provides important insights for advancing biohydrogen purification and laying the foundation for its future industrial-scale application. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2465-2474"},"PeriodicalIF":2.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242801","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":"Design and evaluation of a novel two-phase partitioning bioreactor to enhance methane mass transfer","authors":"Robert Bertrand,&nbsp;Lisa Stephanie Dizon,&nbsp;William Holmes,&nbsp;Dhan Fortela,&nbsp;Andrei Chistoserdov,&nbsp;Rafael Hernandez,&nbsp;Mark Zappi,&nbsp;Emmanuel Revellame","doi":"10.1002/jctb.70063","DOIUrl":"https://doi.org/10.1002/jctb.70063","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Methane is typically used in combustion reactions for energy generation or as a disposal strategy. The latter is an environmentally unsustainable practice that demands alternative utilization strategies to convert methane into high-value products. Bioconversion is a responsible methane conversion practice that utilizes bacteria to directly metabolize methane. However, due to mass transfer limitations, widespread adoption of this technology is limited. Thus, a novel two-phase partitioning bioreactor (TPPB) was constructed to improve methane transport through a circulating non-aqueous phase (NAP). Silicone, mineral, and soybean oils were tested abiotically for their suitability as NAPs by evaluating methane volumetric mass transfer coefficients (k_La) at different circulation flow rates (0.25–1.50 L/min).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Due to emulsion formation at higher circulation rates, soybean oil was only tested at 0.25–1.00 L/min, which showed insignificant k_La improvement. For mineral oil, the circulation rate significantly improved the average methane k_La from 9.46 h⁻¹ (0.25 L/min) to 20.44 h⁻¹ (1.5 L/min). Conversely, silicone oil showed the highest significant k_La improvement when the circulation flow rate increased from 0.5 L/min (k_La = 9.93 ± 1.77 h⁻¹) to 1.25 L/min (k_La = 49.24 ± 3.04 h⁻¹). Compared to direct gaseous methane bubbling, 1.25 L/min silicone oil provided a 900% k_La enhancement per unit mass flow of methane fed into the TPPB.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>This study demonstrated that TPPB with circulating NAP can provide significantly higher methane k_La than direct methane injection. Although the present study focused solely on abiotic evaluation, the TPPB could prove beneficial in advancing the bioconversion of methane into useful materials. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2455-2464"},"PeriodicalIF":2.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242800","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":"Advanced process design for large-scale de-novo 2-phenylethanol production via fermentation","authors":"Tamara Janković,&nbsp;Tobias Fecker,&nbsp;Jean-Marc Daran,&nbsp;Adrie J.J. Straathof,&nbsp;Anton A. Kiss","doi":"10.1002/jctb.70057","DOIUrl":"https://doi.org/10.1002/jctb.70057","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>2-Phenylethanol (2PE) is a valuable aroma component that can be obtained through <i>de-novo</i> fermentation from glucose. However, its toxicity at very low concentrations (&lt;2.5 g L⁻¹) limits the fermentation titer, rate and yield. To address these limitations, <i>in-situ</i> product removal has been explored, leading to a recent scale-up to pilot scale. Nonetheless, an industrial scale has yet to be achieved.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>This original research pioneers conceptual development of two large-scale (2 ktonne_2PE/y) production processes for 2PE <i>via de-novo</i> fermentation from glucose. Liquid–liquid extraction with oleyl alcohol and adsorption by hydrophobic resins followed by ethanol desorption, were alternatives considered for <i>in-situ</i> 2PE removal. For either design, solvent recovery and final purification were performed using advanced distillation techniques, including a heat pump-assisted distillation and a dividing-wall column. A fermentation titer of approximately 1.5 g_2PE/L_broth minimized production costs by achieving balance between upstream and downstream processing costs. This resulted in a cost-effective 2PE production for both designs of the recovery process (9.03–9.40 $/kg_2PE). Sensitivity analysis revealed that glucose, oleyl alcohol, and ethanol costs strongly impact total production costs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This novel study provides a comprehensive and scalable process framework for the large-scale production of 2PE through <i>de-novo</i> fermentation. Integrating <i>in-situ</i> product removal and energy-efficient purification strategies, it marks a significant step forward in industrial biotechnology. © 2025 The Author(s). <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley &amp; Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2271-2280"},"PeriodicalIF":2.4,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145243087","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":"Adsorption and electro-catalytic performance of biochar from rice husk","authors":"Xingxing Zhu,&nbsp;Qianmin Cong,&nbsp;Zhangjie Ban,&nbsp;Mengyan Pei,&nbsp;Yuetong Chang,&nbsp;Zhengyu Cai,&nbsp;Xuexiang Ge,&nbsp;Lizhai Pei","doi":"10.1002/jctb.70058","DOIUrl":"https://doi.org/10.1002/jctb.70058","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Organic pollutants, such as rhodamine B (RhB), methylene blue (MB), and 1,2-dihydroxybenzene (catechol) used in dyes, textile industries, cosmetics, plasticizers, pesticides, and pharmaceuticals are difficult to be degraded and have important influence on the ecosystems and human beings. The removal of organic contaminants and sensitive detection of catechol are still important challenges. Rice husk biochar (RHBC) was successfully prepared <i>via</i> a simple sintering technology under Ar atmosphere.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The morphological and structural characterizations show that the proposed RHBC consists of irregular particles with the size of less than 10 μm and amorphous structure. The adsorption performance for the removal of organic pollutants including RhB and MB using the RHBC was investigated. The optimal RHBC dose is 1.25 mg·mL⁻¹ dyes (RhB or MB) solution. 10 mg·L⁻¹ RhB or MB can be totally removed with the adsorption time of 140 min and 70 min, respectively. The RHBC can be used as electrode materials and has an essential effect in the electro-catalytic sensing performance for catechol detection by square wave voltammetry (SWV) method.</p>\u0000 \u0000 <p>The RHBC-modified electrode indicates a determination range of 0.001–1000 μM, low limit of detection of 0.57 nM, oxidation potential of + 0.35 V, good selectivity, reproducibility, stability, and applicability in real water environment for catechol detection.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The RHBC exhibits good adsorption ability for removing organic pollutants in wastewater and electro-catalytic performance for detecting catechol. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2475-2485"},"PeriodicalIF":2.4,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242974","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":"Influence of ultrasound, microwave and high-pressure homogenization on the structural and functional properties of Vigna radiata L. proteins","authors":"Charu Agarwal,&nbsp;Gladys Sara Saji,&nbsp;Anurag Singh Rathore","doi":"10.1002/jctb.70061","DOIUrl":"https://doi.org/10.1002/jctb.70061","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Utilization of sustainable plant proteins is limited by low yield of the existing extraction and processing methods. The study aims to present a comparative assessment of three extraction techniques – ultrasound, microwave and high-pressure homogenization – against conventional alkaline extraction as control on the structural and functional properties of <i>Vigna radiata</i> L. (mung bean) proteins.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Homogenization resulted in the highest extraction yield (20.1%). Infrared and circular dichroism spectroscopic analyses revealed changes in the secondary structure of proteins due to extraction treatments compared to alkaline extraction. All concentrates showed X-ray diffraction amorphous halos typically seen in legume proteins. Compared to the control, microstructural analysis revealed the porous structure of homogenization-derived proteins, roughness of microwave-derived proteins, and dense and aggregated morphology of ultrasound-derived proteins. The electrophoresis profiles and size-exclusion chromatograms were similar for all concentrates. Microwave treatment resulted in the highest water absorption (5.20 g g⁻¹), oil binding (3.32 g g⁻¹), foam stability (100%) and surface hydrophobicity (1250). Homogenization treatment resulted in the lowest particle size (142 nm), as confirmed by dynamic light scattering.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The extraction techniques significantly influenced the extraction yield, structural attributes and functional performance of the protein concentrates. The extraction technique can be chosen based on the desired quality attributes for developing various plant-based foods in the food industry. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2259-2270"},"PeriodicalIF":2.4,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145243022","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 and characterization of graphene oxide/titanium dioxide nanocomposites for enhanced photocatalytic applications","authors":"Artemis Vagena,&nbsp;Dimitrios Sevastos,&nbsp;Athanasia Koliadima","doi":"10.1002/jctb.70056","DOIUrl":"https://doi.org/10.1002/jctb.70056","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Graphene oxide (GO) is a derivative of graphene with hydrophilic properties and the ability to form stable aqueous suspensions. Titanium dioxide (TiO₂), a semiconductor with photocatalytic activity, is often used as a matrix for GO in nanocomposites. Hydrothermal methods are the most commonly used for production nanocomposites by controlling their properties by changing the pressure, temperature, and component ratio.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Various hydrothermal procedures have been utilized for the synthesis of GO/TiO₂ nanocomposites at different ratios. Gravitational field-flow fractionation and dynamic light scattering were applied to measure the particle size and determine the influence of different hydrothermal methods on the particle size distribution. The reflux method produced the smallest particles and a favorable size distribution. Ultraviolet–visible spectroscopy was used to determine the energy gap of the produced materials, and a shift from 3.3 eV for pure TiO₂ to 2.1 eV for the composites was determined, a fact that suggests enhanced photocatalytic potential. The presence of strong chemical bonding between TiO₂ and GO was confirmed by utilizing Raman spectroscopy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The synthesis of GO/TiO₂ nanocomposites was demonstrated, and several spectroscopic and chromatographic techniques were used for their characterization. Smaller and more uniform nanoparticles were produced by the reflux method, while the reduction in the energy gap of GO/TiO₂ composites enhances their suitability for photocatalytic applications. Finally, for the first time, the gravitational field flow fractionation technique was used for determining the particle size distributions of these new nanocomposites. © 2025 The Author(s). <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley &amp; Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2444-2454"},"PeriodicalIF":2.4,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145243125","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":"Preparation of polysaccharide fraction from basil seed mucilage and its application as a stabilizer in the Pickering emulsion containing orange peel essential oil","authors":"Thi-Thuy-Dung Nguyen,&nbsp;Thi-Van-Linh Nguyen,&nbsp;Thi Tuong Vi Tran,&nbsp;Thanh-Thuy Dang,&nbsp;Nguyen Duy Lam,&nbsp;Hong-Tham Truong-Thi,&nbsp;Vinh-Lam Nguyen,&nbsp;Phuoc-Bao-Duy Nguyen,&nbsp;Quoc-Duy Nguyen","doi":"10.1002/jctb.70053","DOIUrl":"https://doi.org/10.1002/jctb.70053","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>This study was conducted to develop and characterize Pickering emulsions stabilized by basil seed mucilage powder (BSMP), incorporating orange peel essential oil at two concentrations (2% and 4%), with the aim of determining their physicochemical properties, stability, and antimicrobial activity against foodborne pathogens.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The recovery yield of BSMP from basil seeds was 8.55 g 100 g⁻¹ and BSMP showed flake-like structure with thin layers, high crystallinity, and glass transition temperature of 192.8 °C. Meanwhile, orange peel essential oil contained 93.247% <span>d</span>-limonene and demonstrated bacteriostatic effects against different Gram-positive and Gram-negative bacteria despite being incapable of destroying them. The resulting Pickering emulsions, particularly at 4% oil concentration, showed excellent stability over 3 weeks with maintained nano-sized particles (d10 of 138.87 nm) and highly negative zeta potential (−52.0 mV) while exhibiting enhanced antimicrobial efficacy against various pathogenic bacteria at lower concentrations compared to pure essential oils.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The findings indicate that BSMP-stabilized Pickering emulsions containing orange peel essential oil serve as a viable natural preservation system for clean-label food products, aiding in the advancement of sustainable, safe, and eco-friendly food products. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2432-2443"},"PeriodicalIF":2.4,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242898","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 comparative study on decolorization of AB172 and BR46 textile dyes by electrochemical processes: multivariate experimental design","authors":"Hilal Ilhan,&nbsp;Orhan Taner Can,&nbsp;Senem Yazici Guvenc,&nbsp;Emine Can-Güven,&nbsp;Gamze Varank","doi":"10.1002/jctb.70055","DOIUrl":"https://doi.org/10.1002/jctb.70055","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Textile dyes, used for coloring fabrics, cause environmental challenges because approximately 30% of the applied dye may enter the wastewater without being treated. This wastewater has intense color, variable pH, and salt content. Limited biodegradability of dyes due to their complex polymer structures necessitates advanced treatment. This study investigated the decolorization of dyeing wastewater by electrocoagulation (EC) and electrooxidation (EO) methods, which are common techniques of electrochemical advanced oxidation processes. Box–Behnken design was applied to experimental design in the determination of the maximum removal efficiency. Initial pH, current density (CD), and reaction time (RT) were chosen as independent variables, and the removal efficiency of Acid Black 172 (AB172) and Basic Red 46 (BR46) dyestuffs was selected as model responses.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Higher BR46 dyestuff removal efficiency was obtained by the EO process using a Ti:RuO₂:IrO₂ electrode, and higher AB172 dyestuff removal efficiency was obtained by the EC process using an Al electrode. Under optimum conditions, the highest removal efficiencies based on dyestuff were 93.4% with the EC process for AB172 dyestuff (initial pH 5.63; CD 0.07 mA cm⁻²; RT 13.1 min) and 94.0% for BR46 dyestuff with the EO process (initial pH 4.61; CD 2.89 mA cm⁻²; RT 72.6 min).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The study suggests that electrochemical methods hold promise for treating dyeing wastewater, providing water recovery and appropriate modeling. Both EC and EO processes, when optimized via Box–Behnken design, offer high dye removal efficiencies with low energy requirements, highlighting their suitability for sustainable textile wastewater treatment. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2417-2431"},"PeriodicalIF":2.4,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242899","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":"Catalytic synthesis of 2-furyl methanol from leaves of Acacia auriculiformis using zinc chloride: a pathway to green chemical synthesis","authors":"Haruna Ibrahim,&nbsp;Abubakar M Ali","doi":"10.1002/jctb.70054","DOIUrl":"https://doi.org/10.1002/jctb.70054","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The catalytic conversion of biomass-derived feedstocks into valuable chemicals is a key focus in sustainable chemistry. This study explores the zinc chloride (ZnCl₂)-catalyzed synthesis of 2-furyl methanol from <i>Acacia auriculiformis</i> leaves. The influence of reaction parameters, including catalyst concentration, temperature, and time, on product yield was systematically investigated.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Gas chromatographic–mass spectrometric results confirmed the formation of 2-furyl methanol, with a maximum yield of 9.35%, equivalent to 458.04 mg g⁻¹ of feed, obtained at 40 °C using 1.0% ZnCl₂ catalyst. The reaction pathway involves ZnCl₂-assisted thermal hydrolysis, dehydration, and mild hydrogenation of hemicellulose-derived pentose sugars. Comparative catalyst studies (using BaCl₂, NaOH, ZnO, CaO, and MgO) revealed that ZnCl₂ exhibited superior selectivity and efficiency in the conversion process.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Zinc chloride proved to be an effective catalyst for the selective synthesis of 2-furyl methanol from lignocellulosic biomass. This study highlights the potential of ZnCl₂ for biomass valorization, offering a green and sustainable route to bio-based chemical production and contributing valuable insights for future industrial applications. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2281-2288"},"PeriodicalIF":2.4,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242949","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 refractory humic substances and by-product formation in landfill leachate using ultrasonic–electrocoagulation","authors":"Shefaa Omar Abu-Nassar,&nbsp;Nurul Hana Mokhtar Kamal,&nbsp;Herni Halim,&nbsp;Mohd Suffian Yusoff,&nbsp;Mohammed JK Bashir,&nbsp;Mahmoud Zuhier Aldrabseh,&nbsp;Amani Abdallah Assolie","doi":"10.1002/jctb.70050","DOIUrl":"https://doi.org/10.1002/jctb.70050","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Landfill leachate contains high levels of refractory organic matter, particularly humic acid (HA) and fulvic acid (FA), which are difficult to degrade due to their complex structures and molecular weight. This study evaluates the effectiveness of a combined ultrasonic–electrocoagulation (US-EC) process for degrading these substances. Key treatment parameters such as total organic carbon (TOC), color, 254 nm ultraviolet light (UV₂₅₄), and UV–visible were used to assess performance. Fourier transform infrared (FTIR) and UV–visible spectroscopy were employed to analyze structural changes in organic matter, while energy-dispersive X-ray (EDX) analysis provided insights into elemental composition and pollutant transformation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Optimal conditions were identified as a surface area-to-volume ratio of 7 m⁻¹, electrode spacing of 3 cm, current density of 50 mA m⁻², stirring speed of 200 rpm, and 30 min of electrolysis. The US-EC process improved TOC removal from 41% (EC alone) to 47%, and color removal from 83.5% to 88.2%. The UV₂₅₄ absorbance of raw landfill leachate was 14.78, decreasing to 7.18 and 6.23 after EC and US-EC, respectively. This reduction indicates lower aromaticity and molecular weight, as confirmed by spectral analysis. Additionally, by-products contained high concentrations of oxygen, carbon, and nitrogen, according to EDX results. FTIR analysis showed significant peaks at 3450 cm⁻¹ (<span></span>OH), 1530 cm⁻¹ and 1400 cm⁻¹ (CC), and 570 cm⁻¹ (C<span></span>H), supporting the effective removal of organic matter by both EC and US-EC.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The combined US-EC process demonstrated improved removal of refractory organic matter in landfill leachate compared to EC alone. Despite a significant increase in energy consumption from 57.8 to 349 kWh kg⁻¹ TOC, the process offers enhanced degradation efficiency and improved environmental performance, indicating its strong potential for advanced leachate treatment applications. © 2025 The Author(s). <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley &amp; Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 11","pages":"2383-2401"},"PeriodicalIF":2.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242927","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}