Journal of chemical technology and biotechnology最新文献

{"title":"From waste to reuse: Fenton degradation of anticancer drugs in hospital wastewater using iron mining residue","authors":"Nayara de M Costa-Serge,&nbsp;Elissandro S Emídio,&nbsp;Karla VL Lima,&nbsp;Adriano L Tonetti,&nbsp;Raquel F Pupo Nogueira","doi":"10.1002/jctb.7877","DOIUrl":"10.1002/jctb.7877","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The heterogeneous photo-Fenton process demands stable and efficient materials as catalysts to decompose hydrogen peroxide and generate reactive oxygen species to promote the degradation of organic contaminants in wastewater. In this study, the catalytic activity of an iron mining residue (IMR) was investigated for the heterogeneous photo-Fenton degradation of the anticancer drugs 5-fluorouracil (5-FU) and cyclophosphamide (CP) present in hospital wastewater (HW).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>High degradation efficiency was observed for 5-FU (&gt;99%) and CP (&gt;95%) after 45 min at pH 2.5 using 1 mmol L⁻¹ H₂O₂, and 0.3 g L⁻¹ IMR in water. The generation of hydroxyl radical, especially under solar irradiation, indicated the role of the catalyst in generating this oxidizing species, which was confirmed by the drastic decrease of degradation in the presence of tert-butyl alcohol, and by the transformation products of 5-FU and CP identified during the photo-Fenton process. IMR showed stability and maintained &gt;95% removal efficiencies over three reuse cycles with negligible iron leaching (&lt; 1 μmol L⁻¹). For HW, the application of a vermifiltration pre-treatment reduced TOC levels from 129 mg L⁻¹ to 21.9 mg L⁻¹ and turbidity from 64 NTU to 12 NTU, enabling the degradation of &gt;80% of 5-FU in 90 min under optimized conditions (0.3 g L⁻¹ IMR, 3 mmol L⁻¹ H₂O₂, solar irradiation).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>It can be concluded that the IMR presents high stability and efficiency for the degradation of anticancer drugs in real wastewater highlighting its potential as a cost-effective and sustainable catalyst for the photo-Fenton treatment process. © 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 7","pages":"1472-1481"},"PeriodicalIF":2.4,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7877","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264355","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":"Removal of chlorinated organic pollutants from water by Fe-loaded biochar: a review","authors":"Jinghui Chen,&nbsp;Wenhan Zhong,&nbsp;Shahzad Afzal,&nbsp;Liaqat Zeb,&nbsp;Ming Zhang,&nbsp;Ligang Luo,&nbsp;Dong Zhang,&nbsp;Tao Ding,&nbsp;Liheng Xu,&nbsp;Aqeel Mahmood","doi":"10.1002/jctb.7882","DOIUrl":"10.1002/jctb.7882","url":null,"abstract":"<p>Chlorinated organic pollutants (COPs) have garnered significant attention due to their propensity for easy migration, difficulty in degradation, carcinogenicity and volatility, all posing a threat to ecological safety and human health. Effective removal of COPs from the environmental matrix is crucial. Fe-loaded biochar (Fe@BC) is an artificial synthetic carbonaceous composite. Fe@BC has been widely studied for its potential for COP removal. On the one hand, Fe can activate oxidants to generate oxidizing free radicals, while, on the other, it can also serve as a reducing agent to dechlorinate and reduce COPs. Furthermore, biochar as a substrate for Fe can prevent the agglomeration of Fe⁰, and its porosity facilitates the adsorption of COPs. The utilization of Fe@BC effectively enhances the removal efficiency of COPs by the synergetic advantages of both Fe⁰ and biochar. No review paper has been published on Fe@BC for COP removal in water. Hence, it is crucial to summarize the state-of-the-art progress of Fe@BC production, performance efficiency and mechanisms for COP removal. Thus, in this mini-review, we have systematically provided the recent research on removing COPs by Fe@BC and prospects for promoting the practical use of Fe@BC for that purpose, which may provide insight into sustainable wastewater treatment and groundwater management. © 2025 Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 9","pages":"1762-1780"},"PeriodicalIF":2.4,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144888470","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 of the adsorption of erythromycin at environmentally relevant concentration by molecular imprinted polymer under different conditions","authors":"Wan-Yang Yan,&nbsp;Yu Wu,&nbsp;Yun-Fan Wang,&nbsp;You Ma,&nbsp;Han Meng,&nbsp;Guo-Xiang Wang,&nbsp;Jie Ma,&nbsp;Yan Xiao,&nbsp;Wen-Ming Xie","doi":"10.1002/jctb.7884","DOIUrl":"10.1002/jctb.7884","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The presence of antibiotics in different environments poses a great risk to the environment and human health. Adsorption is an effective method to solve the problem. In our previous study, a molecularly imprinted polymer (MIP) with selective adsorption ability for erythromycin (ERY) at environmentally relevant concentration was prepared and characterized. However, the effect of different factors on the adsorption removal of ERY by MIP was not clear. In this study, the coprecipitation polymerization method was used to synthesize the MIP and the effects of temperature, pH, salinity and dissolved organic matter (DOM) on the adsorption of ERY by MIP were evaluated with batch experiments under different conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The results showed the equilibrium adsorption capacity of MIP was increased from 814.62 to 1175.54 μg g⁻¹ when the temperature was increased from 283 to 303 K. The maximum adsorption capacity of MIP was 1061.12 μg g⁻¹ when the pH was 7.0. The presence of salinity would inhibit the adsorption process, in which the adsorption capacity of MIP was decreased from 1061.12 to 412.99 μg g⁻¹ when the salinity was increased to 20 g L⁻¹. Low concentration of DOM (&lt;5 mg L⁻¹) promoted the adsorption of ERY significantly from 1061.12 to 1545.50 μg g⁻¹, while the adsorption capacity was slightly increased to 1812.50 μg g⁻¹ when the concentration of DOM reached 20 mg L⁻¹.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>After optimization with orthogonal experiments, the adsorption capacity of MIP was increased from 334.10 to 458.05 μg g⁻¹ with real wastewater. © 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":"1500-1507"},"PeriodicalIF":2.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264723","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":"Transition metal oxide manipulating ZrO2-based non-precious metal catalysts for enhanced CO2-mediated oxidative dehydrogenation of propane","authors":"Zelin Ma,&nbsp;Fang Wang,&nbsp;Luomeng Zhao,&nbsp;Zhuangzhuang Ma,&nbsp;Weihao Zhao,&nbsp;Shiyuan Wang,&nbsp;Shuang Yazhou,&nbsp;Jiulong Wang,&nbsp;Jie Jian,&nbsp;Pengfei Guo,&nbsp;Hongqiang Wang","doi":"10.1002/jctb.7873","DOIUrl":"10.1002/jctb.7873","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Developing highly stable and cost-effective catalysts for CO₂-mediated oxidative dehydrogenation of propane (CO₂-ODP) is critical to advancing sustainable propylene production. While ZrO₂-based supports offer promising thermal stability and tunable acid–base properties, integrating transition metal oxides (TMO_<i>x</i>) as active sites to optimize CO₂ activation and propane conversion remains underexplored.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Here, we systematically design a series of non-precious metal TMO_<i>x</i>/ZrO₂ catalysts (TM = Cr, Fe, Co, Ni, Cu, Zn) via a coprecipitation–gel method to uncover structure–activity relationships. Among them, CrO_<i>x</i>/ZrO₂ emerges as the optimal candidate, achieving notable C₃H₈/CO₂ conversions of 46.24%/38.27% and 86.49%/27.03% C₃H₆ selectivity/yield at 600 °C. Characterization reveals that the coexistence of Cr³⁺/Cr⁴⁺ species (XPS) and mixed-phase Cr₂O₃/CrO₂ (XRD/Raman) creates abundant oxygen vacancies and enhances CO₂ adsorption (TPD), while HRTEM/EDX confirms uniform CrO_<i>x</i> dispersion on ZrO₂. Further optimizing the Cr/Zr ratio to 1:1 maximizes active site exposure while preventing excessive aggregation, thereby balancing redox activity and structural stability.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSIONS</h3>\u0000 \u0000 <p>This work elucidates how tailored TMO_<i>x</i>/ZrO₂ interfaces leverage synergistic electronic and geometric effects to drive CO₂-ODP efficiency, offering a blueprint for designing high-performance non-precious metal catalysts for alkane valorization. © 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":"1444-1452"},"PeriodicalIF":2.4,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264719","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":"Chemical coupling of biological magnetosomes with amine-functionalized therapeutic antibody conjugates","authors":"Sandy M. Payan,&nbsp;Lucía Gandarias,&nbsp;Romain Avellan,&nbsp;Damien Faivre,&nbsp;Sandra Prévéral","doi":"10.1002/jctb.7878","DOIUrl":"10.1002/jctb.7878","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Immunotherapy, particularly in cancer treatment, can be enhanced using antibody–drug or antibody–radionuclide conjugates. These conjugates disrupt cell signaling and induce cell death, requiring the targeted antigen to be highly expressed on tumor cells to avoid damage to healthy tissues. One promising strategy to improve delivery of antibody conjugates is the use of magnetosomes, biological magnetic nanoparticles, which can be guided to tumor sites using magnetic fields. However, most antibody–drug or antibody–radionuclide conjugates are functionalized using the antibody amine groups of lysine residues on the heavy chains. Therefore, these amine groups are no longer available to bind the antibodies to the magnetosomes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Here, we explore an alternative approach to bind amine-functionalized antibodies to magnetosomes. Using sulfosuccinimidyl-4-(<i>N</i>-maleimidomethyl)cyclohexane-1-carboxylate as a crosslinker, the antibodies are chemically attached to the magnetosome membrane via thiol groups through antibody partial reduction. Our results demonstrate that this chemical process preserves the integrity and functionality of both magnetosomes and antibodies. Moreover, we prove that the produced magnetosome–antibody conjugates are stable under various <i>in vivo</i>-like conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This coupling method offers significant advantages, enabling the coupling of therapeutic molecules to antibodies combined with the magnetic properties of magnetosomes. This new strategy aims to improve cancer therapy through targeted delivery and rapid accumulation at tumor sites. © 2025 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 6","pages":"1366-1376"},"PeriodicalIF":2.4,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939650","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":"Review of ethanol distillation process simulation: evolution, challenges, and perspectives","authors":"Eron Paulo Borges Filho,&nbsp;Aline Dettmer","doi":"10.1002/jctb.7868","DOIUrl":"10.1002/jctb.7868","url":null,"abstract":"<p>This article conducts a literature review with the objective to provide a concise literature overview of advanced, and often energy-saving, distillation methods for bioethanol production, especially highlighting what configurations and process modifications are being studied (e.g., mechanical vapor recompression, pressure swing distillation, advanced column architectures), and the challenges that are currently faced by these configurations, the thermodynamic models used, the congeners and equilibrium implications. The research was made using Scopus and Web of Science databases where only English-language research articles were considered, with no date range exclusion. Key findings indicate that rigorous heat-integration strategies can reduce steam consumption by 30–80%, though these methods often come with greater capital necessity and heightened operational complexity. Dynamic simulations underscore that process intensification solutions, while promising in steady-state scenarios, can become sensitive to fluctuations in feed composition or flow rate, leading to potential bottlenecks in scalability and real-world reliability. Moreover, the inclusion of second-generation feedstocks, with typically lower ethanol content and higher variability, magnifies the need for these energy cuts and robust control strategies. Beyond highlighting these advancements, the review underscores lingering challenges related to replicability and full-scale adoption. Key recommendations include generating more precise interaction parameters for congener-laden systems, coupling model-based optimization with real-world data, and pursuing balanced designs that reconcile energy gains, capital costs, and operational stability. Taken together, these insights point toward a future of increasingly efficient, versatile, and environmentally sound ethanol distillation processes. © 2025 Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 8","pages":"1529-1540"},"PeriodicalIF":2.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647045","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":"Sustainable hydrogen production by water decomposition in gamma radiolysis with post-modification studies of nano-BeO photocatalyst","authors":"Imran Ali,&nbsp;Gunel Imanova,&nbsp;Teymur Agayev,&nbsp;Anar Aliyev,&nbsp;Abdulaziz Bentalib,&nbsp;Tonni Agustiono Kurniawan,&nbsp;Xavier Yangkou Mbianda","doi":"10.1002/jctb.7876","DOIUrl":"10.1002/jctb.7876","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>There is a great demand for green hydrogen energy due to climate issues and economic pressures globally. Therefore, hydrogen production was achieved by water splitting using a nano-BeO photocatalyst.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The hydrogen produced using BeO + H₂O_ads and nano-BeO + H₂O_liq systems was 9.0 × 10¹⁶ (at 7 h) and 32.8 × 10¹⁶ (at 5 h) molecules g⁻¹ at 300 K. The hydrogen production was optimized by raising the temperature in the BeO + H₂O_ads system and the maximum hydrogen obtained was 7.0 × 10¹⁷ and 8.5 × 10¹⁷ molecules g⁻¹ in thermal and radiation–thermal processes at 673 K for 5 h. The ranges of the values of <i>W</i>_Т(Н₂), <i>W</i>_R(Н₂) and <i>W</i>_RT(Н₂) at 373, 473, 573 and 673 K were 2.34 × 10¹³ to 37.9 × 10¹³, 8.8 × 10¹³ to 51.6 × 10¹³ and 9.22 × 10¹³ to 79.4 × 10¹³, respectively. The values of <i>G</i>(H₂) at these temperatures were 5.18, 11.3, 23.7 and 32.8 molecules (100 eV)⁻¹, respectively. The effect of <i>γ</i>-radiation on the nano-BeO surface was studied by electron paramagnetic resonance, which showed some localized defects on the volume traps. The concentration of such volume traps was very small, i.e. 4 × 10⁻² eV of the total number of traps.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Approximately 90–96% of all non-equilibrium carriers formed on the beryllium oxide surface interacted with adsorbed water molecules, responsible for the high catalytic capacity of nano-BeO. The mechanism of water splitting on the nano-BeO surface was developed. Finally, the reported methods are useful for hydrogen production on a large scale. © 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":"1463-1471"},"PeriodicalIF":2.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264569","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":"Examining mixotrophic fermentation in fed-batch mode for C1-gas valorization","authors":"Marina Fernández-Delgado,&nbsp;Pedro Enrique Plaza,&nbsp;M Teresa García-Cubero,&nbsp;Susana Lucas,&nbsp;Mónica Coca,&nbsp;Juan Carlos López-Linares","doi":"10.1002/jctb.7874","DOIUrl":"10.1002/jctb.7874","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>C1-gases like CO and CO₂, significant contributors to climate change, offer the potential for sustainable bioconversion into valuable products. The study explored mixotrophic fermentation using C1-gases in fed-batch mode to improve the production of target compounds, focusing on <i>Clostridium aceticum</i> and <i>Clostridium carboxidivorans</i>. It aimed to overcome the limitations of conventional gas fermentation (autotrophic fermentation and without fed-batch mode) and assess the potential of mixotrophic substrates for enhancing yields.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Results showed that mixotrophic fermentation with fructose as a co-substrate led to higher microbial growth in <i>C. aceticum</i>, increasing acetic acid (1200 <i>versus</i> 600 mg L⁻¹) and ethanol (600 <i>versus</i> 0 mg L⁻¹) production, compared to autotrophic fermentation. For <i>C. carboxidivorans</i>, constant CO consumption occurred in autotrophic and mixotrophic fermentation. Mixotrophic fermentation with fructose and C1-gases by <i>C</i>. <i>carboxidivorans</i> significantly boosted microbial growth and metabolic activity, increasing butanol (1600 <i>versus</i> 0 mg L⁻¹) and butyric acid (2400 <i>versus</i> 1800 mg L⁻¹) production, compared to autotrophic fermentation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSIONS</h3>\u0000 \u0000 <p>The study highlights mixotrophic fermentation's potential to enhance C1-gas valorization. It provides insights into microbial behavior under varied substrate conditions, contributing to sustainable biomanufacturing practices for biofuel and high-value bioproducts. © 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 7","pages":"1453-1462"},"PeriodicalIF":2.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7874","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264697","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":"Optimized size and stability of composite CuO–ZnO metal oxide nanoparticles for efficient removal of Reactive Black 5 dye","authors":"Shanza Shafaat,&nbsp;Nasira Hussain,&nbsp;Zeeshan Abbasi,&nbsp;Lotfi Ben Tahar,&nbsp;Muhammad Usman,&nbsp;Ambreen Sarfraz,&nbsp;Asad Muhammad Khan,&nbsp;Rafaqat Ali Khan,&nbsp;Faiz Rabbani,&nbsp;Muhammad Bilal,&nbsp;Ahson Jabbar Shaikh","doi":"10.1002/jctb.7867","DOIUrl":"10.1002/jctb.7867","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The increasing contamination of water bodies with industrial dyes necessitates efficient remediation strategies. CuO–ZnO composite nanoparticles (NPs) have shown promise as adsorbents due to their high surface area, stability, and tunable properties. This study focuses on optimizing the synthesis conditions of CuO-ZnO NPs via a co-precipitation method and evaluating their performance for the removal of Reactive Black 5 (RB5) dye.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>CuO–ZnO composite NPs were synthesized with varied precursor ratios, pH values, temperatures, and reagent addition times to achieve optimal size and stability. Characterization using ultraviolet–visible spectroscopy, fluorescence, X-ray diffraction, Fourier transform infrared spectroscopy, dynamic light scattering, vibrating-sample magnetometry, and Brunauer–Emmett–Teller analysis confirmed the structural, optical, and physical properties of the optimized composite. The smallest size and highest stability for a concentration ratio of 50:50 was obtained at pH 11, 80 °C, and a reagent addition time of 5 min. Composite NPs show ferromagnetic behavior. The adsorption efficiency of RB5 dye was studied under different operational parameters, revealing that maximum removal (92%) occurred at pH 2 with a contact time of 60 min. Adsorption kinetics followed the pseudo-first-order model, while equilibrium data aligned with the Freundlich isotherm, indicating multilayer adsorption. Thermodynamic analysis confirmed the endothermic and spontaneous nature of the process.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The optimized CuO–ZnO composite NPs demonstrated high efficiency for RB5 dye removal and maintained significant reusability across multiple adsorption–desorption cycles. These findings highlight the potential of CuO–ZnO NPs as an effective and sustainable adsorbent for 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 6","pages":"1346-1365"},"PeriodicalIF":2.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939658","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":"Highly selective oxidation of furfural to maleic acid with a Brønsted–Lewis dual-acid system","authors":"Yu Lin,&nbsp;Yuanzhuo Ji,&nbsp;Yizhe Zhang,&nbsp;Hualiang An,&nbsp;Qian Zhao,&nbsp;Xinqiang Zhao,&nbsp;Yanji Wang","doi":"10.1002/jctb.7872","DOIUrl":"10.1002/jctb.7872","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Maleic acid (MAc) is a high value-added oxygenic hydrocarbon derivative monomer. The synthesis of MAc from biomass-based furfural is a green process and has important academic research value. Herein, selective catalytic oxidation of renewable furfural to MAc was investigated.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The effect of using different heteropoly acids as catalyst and different organic acids/H₂O as solvent was evaluated first, and the ‘phosphomolybdic acid + acetic acid/H₂O’ composite system with good performance was screened out. Acetate anion acted as free radical acceptor in the reaction to stabilize furfural radical and inhibit the polymerization reaction. Under optimal reaction conditions, the conversion of furfural was 97.8%, and the MAc yield and selectivity were 58.3% and 59.6%, respectively. To further improve the selectivity of MAc, different kinds of Lewis acids were introduced to construct a Brønsted–Lewis dual-acid catalytic system. When Cu(OAc)₂ was as Lewis acid, the MAc selectivity was significantly improved to 72.5% with a furfural conversion of 72.3%. The catalytic mechanism of Brønsted–Lewis dual-acid system was finally clarified.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>In this complex system, the synergy of Cu and Mo is responsible for the outstanding catalytic efficiency, where the Mo^VI/Mo^V redox can be facilitated by the redox of Cu^II/Cu^I with the assistance of O₂; acetate anion can interact with furfural radicals, thereby delaying the chain reaction of free radicals. This process makes the MAc generation reaction more dominant than the polymerization reaction, thus improving MAc selectivity. © 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":"1434-1443"},"PeriodicalIF":2.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264482","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}