Journal of chemical technology and biotechnology最新文献

{"title":"Study on the porous-medium catalytic oxidation characteristics of MnCo@CF and its CFD numerical simulation","authors":"Xinfeng Qian,&nbsp;Xin Wang,&nbsp;Hui Zhang,&nbsp;Dawei Hou,&nbsp;Linjun Yang","doi":"10.1002/jctb.70221","DOIUrl":"https://doi.org/10.1002/jctb.70221","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Volatile organic compounds (VOCs) are key atmospheric pollutants causing haze and photochemical smog, with toxic and carcinogenic properties. Catalytic oxidation is a widely used industrial VOC abatement technology, but noble-metal catalysts are costly and easily deactivated, making non-noble-metal catalysts a promising alternative. Porous inserted catalytic oxidizer emerges as a novel advanced technology, and computational fluid dynamics (CFD) simulation is an essential tool for studying its flow and reaction characteristics. This study prepared MnCo@<i>CF</i> porous-medium catalyst via a hydrothermal method, and investigated its catalytic performance and oxidation characteristics through experiments and CFD numerical simulation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>MnCo@<i>CF</i> featured spinel MnCo₂O₄ as the primary active phase, with Cu derived from the copper foam substrate participating in catalysis and forming chestnut-like spherical nanostructures. This catalyst achieved 90% toluene conversion at 562 K, with an apparent activation energy of 85.1 kJ mol⁻¹, exhibiting superior performance to that of the single-metal counterparts Mn@<i>CF</i> and Co@<i>CF</i>. CFD simulations revealed intense turbulence and vortexes within the porous framework, with the turbulent kinetic energy reaching 2.054 × 10⁻² m² s⁻²; the VOC removal efficiency was merely approximately 0.2% at an inlet velocity of 0.21 m s⁻¹, whereas inlet temperature variations in the range of 273–373 K and inlet concentration fluctuations from 0.1 to 3 wt% exerted negligible effects on the catalytic process.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>MnCo@<i>CF</i> porous-medium catalyst was successfully synthesized <i>in situ</i> on copper foam via a hydrothermal method, showing excellent VOC catalytic oxidation activity with high toluene conversion at moderate temperatures. The porous framework has extensive internal vortex disturbances, leading to sharp spatial fluctuations of flow velocity, pressure, and turbulent kinetic energy, which are closely related to the solid skeleton distribution. Inlet flow velocity is the key factor affecting catalytic performance, while inlet temperature and concentration fluctuations within a certain range have relatively small impacts on the catalytic characteristics. © 2026 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 9","pages":"1843-1855"},"PeriodicalIF":2.7,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662486","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":"Performance of commercial polyamide membranes in pervaporation for dye removal: Impact of dye classes, colors, and surfactants","authors":"Miriam Albara,&nbsp;Angelo Oliveira Silva,&nbsp;Ricardo Antonio Francisco Machado,&nbsp;Cintia Marangoni","doi":"10.1002/jctb.70200","DOIUrl":"https://doi.org/10.1002/jctb.70200","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Water reclamation in the textile industry is essential to reduce environmental impacts associated with high water consumption and pollutant discharge. Among emerging technologies, pervaporation (PV) has gained attention due to its high selectivity and efficiency in contaminant removal. However, there is still a lack of comprehensive understanding regarding the performance of commercial polyamide (PA) membranes when exposed to different dye classes, colors, and complex feed conditions. This study aims to evaluate the performance of a commercial PA membrane in PV for treating dye-containing wastewater, considering various dye classes and operational parameters.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The study was conducted in sequential stages, including optimization of PV operating conditions for reactive, direct, disperse, and acid black dyes, followed by investigation of chromophore group effects using different colored dyes. Additionally, dye mixtures and surfactants were introduced to simulate real textile effluents. The PA membrane exhibited lower permeate fluxes compared to vacuum membrane distillation (VMD) and membrane distillation (MD) reported in the literature. Nevertheless, it achieved outstanding color rejection, consistently exceeding 98% across all tested conditions. Characterization techniques such as SEM, EDX, and ATR-FTIR revealed insights into dye deposition, fouling behavior, and membrane structural integrity after operation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The results demonstrate that PA membranes in PV processes offer excellent selectivity for dye removal, mainly governed by the solution-diffusion mechanism. Despite lower flux performance, the high rejection rates and stability highlight the strong potential of this approach for textile wastewater treatment and industrial water reuse applications. © 2026 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":"101 9","pages":"1742-1756"},"PeriodicalIF":2.7,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662786","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":"Synthesis and performance of a europium ion–imprinted polymer for highly selective Eu3+ adsorption and recovery","authors":"Rua B Alnoman","doi":"10.1002/jctb.70184","DOIUrl":"https://doi.org/10.1002/jctb.70184","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Selective recovery of Eu³⁺ ions from aqueous solutions remains a problem due to the chemical similarity of rare earth ions. In this study, Eu³⁺ ion-imprinted polymer was prepared using a previously synthesized ligand, MAISH, prepared by reducing a Schiff base formed between isatin and 1-amino-1H-pyrrole-2,5-dione. The ligand was used to prepare a complex with Eu³⁺, [Eu(MAIS)(NO₃)₂(H₂O)₂], which was copolymerized with styrene and divinylbenzene.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>MS, EA, FTIR, UV–vis, and NMR results confirmed the formation and coordination ability of the ligand. The morphology and surface area of Eu-IIP and NIP indicated that Eu-IIP possessed a rougher surface and larger surface area compared to the NIP, as expected. At pH 6, the maximum adsorption capacity of Eu-IIP was 435 mg g⁻¹, much higher than that of the NIP (232 mg g⁻¹). The isotherm data correlated well with the Langmuir model, and the kinetic data fitted the pseudo-second-order model well, indicating chemisorption as the main adsorption mechanism. Eu-IIP exhibited high selectivity towards Eu³⁺ compared to La³⁺, Gd³⁺, Ce³⁺, Cu²⁺, Ni²⁺, and Co²⁺. Moreover, Eu-IIP retained 87% of its original adsorption efficiency after ten regeneration cycles.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>MAISH-based Eu-IIP is a selective, efficient, and reusable adsorbent material for the recovery of Eu³⁺ ions. Its adsorbent capacity (435 mg g⁻¹) is almost double that of the NIP adsorbent material (232 mg g⁻¹), which demonstrates the effectiveness of the present imprinting strategy. © 2026 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 8","pages":"1492-1505"},"PeriodicalIF":2.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386539","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":"On-site pilot-scale advanced oxidation pretreatment of hospital wastewater: assessment of pharmaceuticals, pathogens, antibiotic resistance genes and acute ecotoxicity","authors":"Andreas Kaliakatsos,&nbsp;Iosifina Gounaki,&nbsp;Spyros Dokianakis,&nbsp;Georgios Gkotsis,&nbsp;Maria-Christina Nika,&nbsp;Eleni Aleiferi,&nbsp;Athanasios S Stasinakis,&nbsp;Nikos Katsarakis,&nbsp;Nikolaos S Thomaidis,&nbsp;Thrassyvoulos Manios,&nbsp;Michalis S Fountoulakis,&nbsp;Danae Venieri","doi":"10.1002/jctb.70170","DOIUrl":"https://doi.org/10.1002/jctb.70170","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Hospital premises generate wastewater containing a wide spectrum of contaminants, such as pharmaceutically active compounds (PhACs), antibiotic resistance genes (ARGs) and pathogenic microorganisms, whilst plenty of them are classified under the antibiotic resistant bacteria (ΑRΒ) category. These contaminants are of great concern, as they could have serious repercussions to the environment and public health. In the current study, a pilot-scale unit based on Advanced Oxidation Processes (AOPs), was installed and operated on hospital's premises, in order to treat a highly contaminated stream of real hospital wastewater (HWW), evaluating: UV/H₂O₂, UV/TiO₂-A, UV/TiO₂-B, UV/H₂O₂ + TiO₂-A and UV/H₂O₂ + TiO₂-B at contact times of 6 and 11 h.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>According to the results, 93 pharmaceuticals, parent compounds and metabolites, were detected and quantified using LC-QTOF-MS in the HWW produced in a building housing specific medical services. Their concentrations ranged between a few μg L⁻¹ and several hundreds μg L⁻¹, while the concentrations of pathogens ranged from 10³ to 10⁶ CFUs 100 mL⁻¹. The removal rates of the sum of pharmaceuticals after 6 h of treatment were 44.6% and 40.4% for UV/H₂O₂ and UV/TiO_2, respectively. Acute toxicity to <i>Daphnia magna</i> decreased after treatment; at 25% (v/v) HWW, the UV/H₂O₂ effluent after 6 h caused 0% immobilization. In contrast, TiO₂-based treatments remained toxic at 6 h, but toxicity was decreased after 11 h, with immobilization to 40–60% at 50% (v/v) HWW. Regarding the examined bacteria <i>Enterococci, Escherichia coli, Klebsiella sp.,</i> and <i>Staphylococcus sp.</i>, both treatment processes achieved almost complete elimination. In contrast, although a decrease in the concentrations of ARGs was observed, they exhibited complex behaviour and remained in remarkable concentrations in the effluents. CONCLUSION: The results demonstrated that the applied processes have the potential to be implemented in the future for on-site pre-treatment of heavily contaminated HWW. © 2026 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":"101 8","pages":"1478-1491"},"PeriodicalIF":2.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386568","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":"Machine learning-assisted modeling of catalytic hydrogenolysis of lignin into monomeric products over Ni–Cu/HZSM-5 bimetallic catalysts using methanol as H-donating solvent","authors":"Remigius Nnadozie Ewuzie,&nbsp;Jackson Robinson Genza,&nbsp;Ahmad Zuhairi Abdullah","doi":"10.1002/jctb.70189","DOIUrl":"https://doi.org/10.1002/jctb.70189","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Lignin, an abundant and renewable biopolymer, remains underutilized for the production of high-value aromatic chemicals due to its complex and recalcitrant structure. This study presents an integrated experimental and machine-learning-assisted modeling investigation of alkali lignin hydrogenolysis over cost-effective Ni–Cu bimetallic catalysts supported on HZSM-5, using methanol as a hydrogen-donating solvent. The catalysts were comprehensively characterized using Brunauer–Emmett–Teller, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy to elucidate surface morphology, elemental dispersion, electronic structure, and the synergistic effects between Ni and Cu species.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Under optimized conditions (250 °C, 4 h), lignin conversion reached 91%, and the monomer yield achieved 41 wt.%, with the liquid products exhibiting a high heating value of 32 MJ kg⁻¹. Among all tested catalysts, the 30% Ni–20% Cu/HZSM-5 system delivered the most effective performance, outperforming its monometallic counterparts in both conversion and yield. Product distribution analysis using gas chromatography–mass spectrometry, gas chromatography–flame ionization detection, gel permeation chromatography, Fourier transform infrared spectroscopy, and elemental analysis identified 19 distinct monomeric products.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>A proposed mechanism elucidates the cooperative interaction between Ni and Cu in enhancing activity and selectivity. Machine learning models (random forest, XGBoost, and support vector regression) were developed to predict lignin conversion and monomer yield. Support vector regression achieved the highest predictive accuracy (<i>R</i>² = 0.99 for yield and 0.97 for conversion). Feature importance analysis identified catalyst dosage as the dominant factor (0.39), followed by temperature and time. This integrated experimental–computational approach provides a predictive framework for process optimization and catalyst design in lignin valorization. © 2026 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 8","pages":"1576-1590"},"PeriodicalIF":2.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386538","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":"Enhanced biomethanation under hyperthermophilic conditions: Intake load effects on hydrogenotrophic methanogenesis","authors":"Lurui Chen,&nbsp;Lifeng Cao,&nbsp;Weixiang Ye","doi":"10.1002/jctb.70185","DOIUrl":"https://doi.org/10.1002/jctb.70185","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>As a sustainable energy carrier, biogas upgrading via biomethanation has emerged as a critical frontier in carbon mitigation. While <i>ex-situ</i> microbiological methanogenesis offers distinct operational advantages, its industrial application is significantly hindered by gas–liquid mass transfer limitations. This study investigated a novel anaerobic horizontal rotating bioreactor (AHRB) designed to overcome these bottlenecks under hyperthermophilic conditions (70 °C).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>An intake load optimization strategy was implemented to enhance hydrogenotrophic methanogenesis performance. The AHRB demonstrated exceptional efficiency, where increasing the intake load directly intensified the hydrogen mass transfer rate k_La and methane productivity. At an optimal intake load of 12 NL/(Lr·d), the system achieved a maximum methane yield of 7.20 ± 0.24 NL-CH₄/Lr·d with a remarkable hydrogen utilization rate of 96.8%. Microbial community analysis revealed a highly specialized consortium dominated by the hyperthermophilic methanogen <i>Methanothermobacter thermautotrophicus</i>. The bacterial population was characterized by <i>Gelria</i>, <i>Coprothermobacter</i>, and <i>Tepidiphilus</i>, forming a robust syntrophic network that sustained high-flux methanogenic activity.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>These findings demonstrate that the AHRB, coupled with hyperthermophilic operation, provides a high-performance biocatalytic platform for <i>ex-situ</i> biogas upgrading. This study offers a strategic roadmap for integrating biomethanation into Power-to-Gas (P2G) systems to achieve efficient renewable energy storage. © 2026 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 8","pages":"1506-1516"},"PeriodicalIF":2.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386569","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 robust biochar-magnetite composite for rapid and sustainable arsenic removal from water: Efficiency, kinetics, health risk assessment, and reusability","authors":"Muhammad Asif Naeem,&nbsp;Muhammad Imran,&nbsp;Muhammad Amjad,&nbsp;Behzad Murtaza,&nbsp;Ghulam Abbas,&nbsp;Sajjad Ahmad,&nbsp;Kabeer Qammar,&nbsp;Muhammad Imtiaz Rashid","doi":"10.1002/jctb.70187","DOIUrl":"https://doi.org/10.1002/jctb.70187","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Arsenic (As) contamination in freshwater ecosystems remains a dire global challenge, necessitating the invention of efficient and sustainable treatment technologies. This research assesses and compares the adsorption performance of engineered biochar (BC), magnetic nanoparticles (MNPs), and a novel biochar magnetic-nanoparticles composite (BCMNPs) for As removal.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Material characterization using FTIR, SEM, and complementary analytical techniques confirmed successful surface functionalization and structural integration within the composite. Batch adsorption studies were carried out to examine the effects of initial As concentration, sorbent dosage, pH, and contact time. BCMNPs exhibited the highest adsorption capacity (3.40 mg g⁻¹ at pH 4), outperforming BC and MNPs individually, and achieved rapid uptake with equilibrium reached within the first hour. In continuous-flow column experiments treating 0.5 mg L⁻¹ As solutions, BCMNPs achieved 97% removal efficiency and retained structural integrity and performance across repeated regeneration cycles. Health-risk assessment showed up to a 99% reduction in carcinogenic risk. The pseudo-second-order kinetic model and the Freundlich isotherm showed the best adsorption behavior, indicating that electrostatic interactions and hydrogen bonding primarily governed multilayer chemisorption.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSIONS</h3>\u0000 \u0000 <p>The BCMNPs composite demonstrates high stability, rapid kinetics, and excellent reusability, highlighting its potential as a scalable adsorbent for As remediation in contaminated waters. © 2026 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 8","pages":"1531-1546"},"PeriodicalIF":2.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386449","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":"High-efficiency removal of Cr(VI) and rhodamine B in wastewater via nano-zero-valent iron reduction and Fenton reaction","authors":"Pengfei Guo,&nbsp;Meng Wang,&nbsp;Yingbo Chen","doi":"10.1002/jctb.70197","DOIUrl":"https://doi.org/10.1002/jctb.70197","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The treatment of industrial wastewater containing chromium (Cr(VI)) and rhodamine B (RhB) is a critical environmental protection issue. Fenton-like systems have been widely considered for their potential in wastewater treatment, but developing efficient and practical Fenton-like materials and methods remains a key challenge. This study focuses on exploring the effectiveness of a Fenton-like system composed of a zero-valent iron-based composite material (HTCTSIP-5) and exogenous hydrogen peroxide (H₂O₂) for the removal of Cr(VI) and RhB from wastewater.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The effects of various parameters, including dosing methods, pH levels, content of HTCTSIP-5 and H₂O₂, and initial concentrations, on the removal efficiency were studied. Techniques such as electron paramagnetic resonance, scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy were employed to investigate the underlying mechanisms of removal of Cr(VI) and RhB. The results revealed that the HTCTSIP-5/H₂O₂ system exhibited high removal efficiencies for both Cr(VI) and RhB, with hydroxyl radicals (^•OH) identified as the key agents in RhB degradation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This study confirms that the use of the HTCTSIP-5/H₂O₂ Fenton-like system is an effective approach for the treatment of wastewater containing Cr(VI) and RhB. It provided an effective material and method for industrial wastewater treatment, offering a valuable approach for environmental protection. © 2026 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 8","pages":"1620-1631"},"PeriodicalIF":2.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386727","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":"The use of activated carbon derived from spent coffee grounds as a reusable, sustainable, and effective solution for the removal of butylparaben from water","authors":"Lorena Maihury Santos Tsubouchi,&nbsp;Diane Scapin,&nbsp;Gideã Taques Tractz,&nbsp;Flávia Aparecida Reitz Cardoso,&nbsp;Lúcio Cardozo-Filho,&nbsp;Alessandro Francisco Martins,&nbsp;Diógenes Vedoy,&nbsp;Ana Paula Peron,&nbsp;Osvaldo Valarini Junior","doi":"10.1002/jctb.70190","DOIUrl":"https://doi.org/10.1002/jctb.70190","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Parabens, including butylparaben (BP), are widely used as antimicrobial preservatives in food, cosmetics, and pharmaceuticals, yet are poorly removed by conventional water treatment processes and pose potential risks to aquatic life and human health. This study evaluates activated carbon produced from coffee grounds and chemically activated with ZnCl₂ (ACZnCl₂, 564.4 m²·g⁻¹) as a sustainable adsorbent for BP removal from water.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Using 5 g·L⁻¹ of ACZnCl₂ at pH 7, the highest removal efficiency (77.6 ± 0.4%) occurred at the lowest BP concentration (30 μg·L⁻¹), with removal efficiency dropping to 20.0 ± 0.6% when BP concentration increases to 300 μg·L⁻¹. While most studies examine high BP concentrations (10–200 mg·L⁻¹), this work demonstrates effective removal at environmentally relevant trace levels. Equilibrium was reached within 100 min, and adsorption kinetics behavior were well described by PFO and PSO models (<i>R</i>² = 0.998). Equilibrium data fit the Langmuir isotherm (<i>R</i>² = 0.996), indicating monolayer adsorption. Thermodynamic parameters confirmed a spontaneous (Δ<i>G</i> ≤ 0) and exothermic (Δ<i>H</i> ≤ 0) adsorption process. Aspen Adsorption® simulations validated the system, predicting 100% theoretical removal. ACZnCl₂ maintained removal efficiency above 92% after six ethanol regeneration cycles. <i>Allium cepa</i> assays confirmed the elimination of cytotoxicity and genotoxicity in treated effluent.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The study shows that a 0.001 m-high adsorption column can treat water containing 600 μg·L⁻¹ BP at a flow rate of 5 × 10⁻⁷ m³·s⁻¹, highlighting ACZnCl₂ as a sustainable and scalable option with strong potential for practical water-treatment applications. © 2026 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":"101 8","pages":"1547-1558"},"PeriodicalIF":2.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.70190","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386675","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":"Hybrid laccase-functionalized granular activated carbon for sustainable removal of pharmaceutical contaminants","authors":"Jeniffer Blair,&nbsp;Ricardo Kalm,&nbsp;Andrea Carvajal,&nbsp;Luisa Sepúlveda,&nbsp;Carolyn Palma","doi":"10.1002/jctb.70192","DOIUrl":"https://doi.org/10.1002/jctb.70192","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>A hybrid biocatalytic–adsorptive material was developed by immobilising <i>Trametes versicolor</i> laccase (EC 1.10.3.2; benzenediol:oxygen oxidoreductase) onto acid-functionalised granular activated carbon (Lac-GAC) for the removal of acetaminophen (APH), ibuprofen (IBU) and oxytetracycline (OTC) under environmentally relevant conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>In single-component systems, adsorption followed Langmuir isotherm and pseudo-second-order kinetics, with maximum capacities exceeding 100 mg g⁻¹ (R² &gt; 0.98). In binary systems, antagonistic effects were observed for APH–IBU and APH–OTC mixtures, whereas OTC exhibited synergistic behaviour in the IBU–OTC system. Hydrolysis of OTC (45–66% contribution) was quantified and corrected in adsorption calculations. The Lac-GAC hybrid exhibited a sequential adsorption–biodegradation mechanism. Although intrinsic adsorption capacity was lower than pristine GAC due to partial occupation of surface sites (protein loading 0.0078 mg mg⁻¹; immobilisation yield 78.2%), pollutant elimination increased by nearly 100% after 72 h relative to the adsorption-driven removal of Lac-GAC, indicating enzymatic contribution.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The Lac-GAC system integrates adsorption and catalytic oxidation under neutral conditions, providing sustained time-dependent removal performance. The results clarify the interaction between competitive adsorption and enzymatic degradation in hybrid carbon–laccase systems. © 2026 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"101 8","pages":"1602-1619"},"PeriodicalIF":2.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386755","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}