Journal of water process engineering最新文献_第7页

Mitigating VFAs accumulation and enhancing anaerobic stability in continuous-flow leachate from waste transfer stations using zero-valent iron

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-17 DOI: 10.1016/j.jwpe.2025.107442

Yaya Liu , Cong Jin , Chiqian Zhang , Jinhua Wu , Ping Li

{"title":"Mitigating VFAs accumulation and enhancing anaerobic stability in continuous-flow leachate from waste transfer stations using zero-valent iron","authors":"Yaya Liu , Cong Jin , Chiqian Zhang , Jinhua Wu , Ping Li","doi":"10.1016/j.jwpe.2025.107442","DOIUrl":"10.1016/j.jwpe.2025.107442","url":null,"abstract":"<div><div>The accumulation of volatile fatty acids (VFAs) during anaerobic digestion of leachate from waste transfer stations can destabilize the system. Zero-valent iron (ZVI), with its strong reducing properties, has the significant potential to enhance anaerobic digestion by optimizing the microenvironment for anaerobic microorganisms, enriching microbial communities and promoting direct interspecies electron transfer (DIET). This study examined three continuous-flow scenarios: a control without ZVI (0<sup>#</sup>), initial ZVI addition (1<sup>#</sup>), and ZVI addition during significant VFAs accumulation (2<sup>#</sup>). Both ZVI-supplemented systems outperformed the control, with 2<sup>#</sup> demonstrating superior performance. Compared to the control, 2<sup>#</sup> reduced VFAs accumulation by 82.45 %, increased pH by 2.51 units, improved COD removal by 67.03 %, enhanced methane production by 0.41 L/gCOD, and increased methane concentration by 32.41 %. ZVI addition reduced the oxidation-reduction potential (ORP) by 131–183 mV in 2<sup>#</sup>, facilitating anaerobic conditions conducive to methanogenic activity. Microbial sequencing revealed that VFAs-oxidizing bacteria and methanogens in 2<sup>#</sup> were 6.28–14.64 % and 40.80–69.98 % more abundant, respectively, than in 0<sup>#</sup>, significantly enhancing VFAs degradation. The enrichment of DIET-related microorganisms, such as <em>Methanobacterium</em> and <em>Syntrophomonas</em>, was also higher in 2<sup>#</sup>. ZVI addition during VFAs accumulation stabilizes the anaerobic process, offering a cost-effective and eco-friendly solution for treating leachate and other high-strength organic wastewaters.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"73 ","pages":"Article 107442"},"PeriodicalIF":6.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Abundance, characteristics, and potential human intake of microplastic contamination in tap water: A study of water supply treatment plants in Rayong Province, Thailand

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-17 DOI: 10.1016/j.jwpe.2025.107460

Kanyarak Prasertboonyai , Sutharat Muenmee , Bopit Chouychai , Parnuch Hongsawat , Panida Prarat

{"title":"Abundance, characteristics, and potential human intake of microplastic contamination in tap water: A study of water supply treatment plants in Rayong Province, Thailand","authors":"Kanyarak Prasertboonyai , Sutharat Muenmee , Bopit Chouychai , Parnuch Hongsawat , Panida Prarat","doi":"10.1016/j.jwpe.2025.107460","DOIUrl":"10.1016/j.jwpe.2025.107460","url":null,"abstract":"<div><div>Microplastics in drinking water pose global health concerns. This study investigated their occurrence, distribution, and potential human intake in water supply treatment plants in Rayong Province, Thailand. The fate of microplastics in the water supply system, from the source to household taps, was investigated. Microplastics were detected in all treatment plants, with concentrations ranging from 1.0 to 18.15 items/L in raw water and 0.51 to 11.20 items/L in treated water. Removal efficiency varied from 33.13 % to 63.12 %, influenced by particle size, shape, and polymer density. Fragments and fibers, particularly particles <250 μm, were most prevalent. The primary polymers identified were polyester (PEST), polyethylene terephthalate (PET), and polypropylene (PP). Notably, epoxy resin, polyacrylamide (PAM), polyvinyl chloride (PVC), and chlorinated polyethylene (CPE) were found in treated but not raw water, suggesting secondary contamination. Microplastic concentrations in household tap water were lower than in treated water, reducing exposure risk. Estimated daily intake (EDI) analysis indicated that infants had the highest exposure (0.355 items/kg BW/day), followed by adults (0.184–0.201 items/kg BW/day) and children (0.108 items/kg BW/day). These findings highlight widespread microplastic contamination, potential health risks, and the urgent need for enhanced treatment technologies and further research into long-term effects.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107460"},"PeriodicalIF":6.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THP-AD effluent pretreatment by electrocoagulation/membrane for partial nitrification (PN) /anammox (A) process 采用电凝/膜法对 THP-AD 污水进行预处理，以实现部分硝化 (PN) /anammox (A) 工艺

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-17 DOI: 10.1016/j.jwpe.2025.107365

Guihao Han , Xiaoyan Ding , Zhisheng Liu , Gaige Liu , Xiangkun Li

{"title":"THP-AD effluent pretreatment by electrocoagulation/membrane for partial nitrification (PN) /anammox (A) process","authors":"Guihao Han , Xiaoyan Ding , Zhisheng Liu , Gaige Liu , Xiangkun Li","doi":"10.1016/j.jwpe.2025.107365","DOIUrl":"10.1016/j.jwpe.2025.107365","url":null,"abstract":"<div><div>Effluent from thermal hydrolysis pretreatment coupled anaerobic digestion (THP-AD) is characterized by high ammonia nitrogen, chemical oxygen demand (COD), and suspended solids (SS). In this experiment, the results of the CANON process for the treatment of unpretreated THP-AD effluent showed that five-fold dilution and no dilution of THP-AD effluent had serious inhibitory effects on ammonium oxidizing bacteria (AOB) and anaerobic ammonia-oxidizing (anammox) bacteria, while prolongation of the hydraulic retention time (HRT) could mitigate such inhibition caused by five-fold dilution. To alleviate this inhibition, an electrocoagulation combined with membrane filtration pretreatment strategy was developed, and the removal rates of COD and SS were 61.8 % and 100.0 %. The PN/A system achieved 83.5 % total nitrogen removal from the pretreated diluted triple THP-AD effluent, but 44.3 % total nitrogen removal from the pretreated undiluted THP-AD due to inhibition of soluble and refractory COD. <em>Nitrosomonas</em> and <em>Candidatus_Kuenenia</em> were the major AOB and anammox bacteria in the PN and A reactors respectively. The abundance of both groups declined with the increased THP-AD effluent proportion in the feed. Overall, this study provides a guide to develop the energy-efficient PN/A process for THP-AD effluent treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107365"},"PeriodicalIF":6.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-efficiency degradation of nanofiltration concentrates using an iron-modified self-breathing electrode in electro-Fenton systems

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-16 DOI: 10.1016/j.jwpe.2025.107480

Hongyun Ren, Zilong Zhang, Xia Qin, Cuicui Xu, Fanbin Zhang, Xiyang Li, Xingwei Tao, Xujie Lan

{"title":"High-efficiency degradation of nanofiltration concentrates using an iron-modified self-breathing electrode in electro-Fenton systems","authors":"Hongyun Ren, Zilong Zhang, Xia Qin, Cuicui Xu, Fanbin Zhang, Xiyang Li, Xingwei Tao, Xujie Lan","doi":"10.1016/j.jwpe.2025.107480","DOIUrl":"10.1016/j.jwpe.2025.107480","url":null,"abstract":"<div><div>The homogeneous electro-Fenton(EF) technique is widely recognized in water treatment for its efficient generation of hydroxyl radicals (·OH). However, its drawbacks, such as iron sludge formation and strict pH requirements, constrain its practical applications. To overcome these limitations, this study developed an iron-modified self-breathing electrode (Fe<sub>3</sub>O<sub>4</sub>/MGF<sub>if</sub>) through impregnation and filtration, characterized it, and applied it to construct a heterogeneous EF system for treating nanofiltration concentrates (NFCs). Under optimal conditions, the Fe<sub>3</sub>O<sub>4</sub>/MGF<sub>if</sub> electrode achieved COD and TOC removal efficiencies of 74.2 ± 1.8 % and 81.6 ± 1.7 %, respectively, within 2 h. Moreover, the modified electrode demonstrated degradation efficiency in the heterogeneous EF system comparable to that in the homogeneous EF system, while eliminating iron sludge formation and expanding the applicable pH range. Radical scavenging, quenching experiments and electron paramagnetic resonance (EPR) technique demonstrated that the electrode generated substantial ·OH and minor amounts of superoxide radicals (·O<sub>2</sub><sup>−</sup>) during NFCs degradation. The ultraviolet fluorescence spectra and three-dimensional fluorescence spectra indicated that reactive radicals efficiently degraded humic substances in NFCs, reduced aromatization, and significantly enhanced biochemical properties. This study resolves the challenges of iron sludge formation and pH constraints in homogeneous EF-based NFCs treatment and proposes a novel pathway capable of efficiently degrading recalcitrant organic pollutants by self-breathing.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107480"},"PeriodicalIF":6.3,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction and optimization of key factors for catalytic O3 degradation of antibiotics based on Catboost model coupled Bayesian optimisation algorithm

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-15 DOI: 10.1016/j.jwpe.2025.107481

Xiaoxia Wang , Xinnan Zheng , Zipeng Huang , Cheng Hou , Yuanbo Song , Mengyu Jin , Yang Shi , Yalei Zhang , Zheng Shen

{"title":"Prediction and optimization of key factors for catalytic O3 degradation of antibiotics based on Catboost model coupled Bayesian optimisation algorithm","authors":"Xiaoxia Wang , Xinnan Zheng , Zipeng Huang , Cheng Hou , Yuanbo Song , Mengyu Jin , Yang Shi , Yalei Zhang , Zheng Shen","doi":"10.1016/j.jwpe.2025.107481","DOIUrl":"10.1016/j.jwpe.2025.107481","url":null,"abstract":"<div><div>Machine learning (ML) has the ability to improve the efficiency of heterogeneous catalytic ozone (O<sub>3</sub>) degradation of antibiotics through the potential for rapid identification of key factors in the catalytic system. However, there is still a lack of research on the reverse regulation of catalyst metal composition and reaction conditions for specific antibiotics. This study combined ML model and the Bayesian Optimization Algorithm (BOA) to predict and optimize the key influencing factors in the catalytic O<sub>3</sub> degradation of antibiotic systems. The results indicate that the CatBoost model presented the optimal training efficiency and accuracy, with an R<sup>2</sup> value of 0.9482 and an RMSE of 0.0401. SHAP analysis revealed that antibiotic type, catalyst metal composition, and O<sub>3</sub> flow rate are the three most critical features in model training, with significant interactions observed between O<sub>3</sub> flow rate, pH, and catalyst dosage. Experimental validation demonstrated that the experimental TOC removal rate of antibiotics reached 87.33 % under optimized conditions, while the model-optimized TOC removal rate achieved 90 %, with an error of only 2.97 %. The present work significantly improved the efficiency and accuracy of O<sub>3</sub> catalytic degradation process design for antibiotics and provided a novel approach for selecting and predicting reaction parameters in O<sub>3</sub> catalytic degradation of specific antibiotics.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107481"},"PeriodicalIF":6.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Treating contaminated water with waste: Removal of hazardous Eriochrome black T dye from water system using poultry feather waste 用废物处理受污染的水：利用家禽羽毛废料去除水系统中的有害 Eriochrome 黑 T 染料

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-15 DOI: 10.1016/j.jwpe.2025.107468

Yedam Kim , Gyulim Park , Young Seok Lee , Youngsuk Kim , O-Mi Lee , Kwang Min Lee , Hong-Joo Son

{"title":"Treating contaminated water with waste: Removal of hazardous Eriochrome black T dye from water system using poultry feather waste","authors":"Yedam Kim , Gyulim Park , Young Seok Lee , Youngsuk Kim , O-Mi Lee , Kwang Min Lee , Hong-Joo Son","doi":"10.1016/j.jwpe.2025.107468","DOIUrl":"10.1016/j.jwpe.2025.107468","url":null,"abstract":"<div><div>Eriochrome black T (EBT) dye and poultry feather waste are hazardous substances that pose significant environmental threats if not treated or managed properly. Therefore, the development of effective and environment-friendly management methods is crucial. This study investigated the potential of poultry feathers as sustainable and cost-effective biosorbents for removing EBT from water. Batch biosorption experiments revealed that the optimal conditions for EBT biosorption onto feathers were pH 7, 50 °C, and a feather dosage of 4 g L<sup>−1</sup>. Under these conditions, the maximum biosorption capacity and removal efficiency were 17.1 μmol g<sup>−1</sup> and over 98.5 %, respectively, at EBT concentrations of 150 μmol L<sup>−1</sup>. The pseudo-second-order kinetics and Langmuir isotherm models provided the best fit for the experimental data, indicating that EBT was chemisorbed onto the feather surface to form a monolayer. Additionally, film and intraparticle diffusion were the primary mechanisms governing biosorption. EBT biosorption was spontaneous and endothermic and was driven by an increase in entropy at elevated temperatures. Experiments conducted using environmental water under ambient conditions validated the efficacy of poultry feathers in significantly reducing both the EBT dye concentration and chemical oxygen demand. Fourier-transform infrared spectroscopy and scanning electron microscopy analyses revealed that the EBT dye was adsorbed onto the feather surface through interactions with its functional groups. This study demonstrates the potential of readily available and low-cost poultry feather waste as an effective and sustainable biosorbent for removing hazardous dyes, such as EBT, from contaminated water, offering a promising solution for both waste management and environmental remediation in low-income countries.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107468"},"PeriodicalIF":6.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From agro-alimentary residue to catalyst: Transforming sunflower seed husk waste into modified biochar for efficient ibuprofen degradation in water 从农产食品残渣到催化剂：将葵花籽壳废料转化为改性生物炭，实现布洛芬在水中的高效降解

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-15 DOI: 10.1016/j.jwpe.2025.107458

Lisette A. Ramirez, Mariana Alvarez, Victoria S. Gutierrez

引用次数: 0

Bioremediation of toxic selenium from aqueous solution using Bacillus selenatarsenatis 9470T and machine learning approach

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-15 DOI: 10.1016/j.jwpe.2025.107449

Pallavi Behera , Himanshu Bhushan Sahu , Shivananda Behera , Surajit Das

{"title":"Bioremediation of toxic selenium from aqueous solution using Bacillus selenatarsenatis 9470T and machine learning approach","authors":"Pallavi Behera , Himanshu Bhushan Sahu , Shivananda Behera , Surajit Das","doi":"10.1016/j.jwpe.2025.107449","DOIUrl":"10.1016/j.jwpe.2025.107449","url":null,"abstract":"<div><div>The study focuses on a comprehensive study of the removal of selenium from an aqueous solution using <em>Bacillus selenatarsenatis</em> 9470<sup>T</sup> and developing a predictive model under laboratory conditions. The growth rate and removal efficiency of the bacterium were investigated by varying pH, incubation time, inoculum dosages, and temperature. The characterization of <em>Bacillus selenatarsenatis</em> 9470<sup>T</sup> before and after selenium exposure was performed using SEM, EDX, FT-IR, pH<sub>zpc</sub>, and BET surface area. At 37 °C, the bacterium removed ∼99 % of selenium from the broth with initial concentrations below 10 Se-mg/L at pH 6 and 4 % inoculum dose within 20 h. The pH<sub>zpc</sub> of <em>Bacillus selenatarsenatis</em> 9470<sup>T</sup> was 7, and the specific surface area, average pore diameter, and pore volume were found to be 4.309 m<sup>2</sup>/g, 7.1 nm, and 7.6×10<sup>−9</sup> m<sup>3</sup>/g, respectively, indicating the presence of mesopores. Langmuir isotherm and pseudo-second-order fit well, indicating monolayer sorption and chemisorption, respectively. The Regression Learner tool shows the best fit for Gaussian Process Regression (GPR), followed by Neural Network (NN), Support Vector Machines (SVM), and Tree (T). The best-fitted model (GPR) used for predicting unknown data points gave similar results to those given by the experiment. The study with competing ions affected Se removal efficiency as follows: manganese > iron > zinc > aluminum. The investigation showed that 89.7 % and 85 % of selenium were removed from sump 1 and sump 2, respectively. Moreover, it showed the ability to neutralize and remove other pollutants such as Fe, Mn, Zn, and Mg from real mine water samples. The experiment showed that this bacterium could be utilized to develop a sustainable approach for treating selenium-contaminated wastewater.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107449"},"PeriodicalIF":6.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MOF-on-MOF composite material derived from ZIF-67 precursor activated by peroxymonosulfate for the removal of metronidazole

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-15 DOI: 10.1016/j.jwpe.2025.107467

Yiqiong Yang, Bingbing Yang, Xuyang Gao, Xinrong Dang, Zhe Jin, Xiaodong Zhang

{"title":"MOF-on-MOF composite material derived from ZIF-67 precursor activated by peroxymonosulfate for the removal of metronidazole","authors":"Yiqiong Yang, Bingbing Yang, Xuyang Gao, Xinrong Dang, Zhe Jin, Xiaodong Zhang","doi":"10.1016/j.jwpe.2025.107467","DOIUrl":"10.1016/j.jwpe.2025.107467","url":null,"abstract":"<div><div>The removal of antibiotics, commonly detected in drinking water, as well as groundwater and surface water, poses a formidable challenge and represents a significant risk to aquatic ecosystems. To effectively eliminate these contaminants, it is essential to establish robust protocols for an efficient wastewater purification system. In this study, we successfully synthesize Co<img>Fe PBA in situ using ZIF-67 (Co) as a precursor, leading to the formation of ZIF-67/Co-Fe PBA composites characterized by a MOF-on-MOF structure. We investigate how various reaction parameters, inorganic ions, and organic matter impact the degradation efficiency of metronidazole (MNZ). The composite demonstrates exceptional adsorption capacity for MNZ, achieving 98 % degradation within four minutes—comparable to most adsorbents reported in previous studies. Both the Langmuir isotherm model and the pseudo-second-order kinetic model accurately describe the adsorption process. Thermodynamic analyses suggest that adsorption occurs through a spontaneous mechanism that absorbs heat. Furthermore, we propose a potential mechanism for adsorption. Our findings reveal that both MNZ and its intermediates exhibit significantly reduced levels of acute toxicity, developmental toxicity, and mutagenicity; thus, indicating that utilizing this composite would not result in notable secondary contamination. These investigations highlight the promise of MOF-on-MOF composites as highly effective and environmentally friendly solutions for practical wastewater treatment applications.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107467"},"PeriodicalIF":6.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Arsenic removal using bacteria immobilized on polyurethane foam in a packed bed bioreactor

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-15 DOI: 10.1016/j.jwpe.2025.107471

Rohit Kushwaha , Ram Sharan Singh , Devendra Mohan

{"title":"Arsenic removal using bacteria immobilized on polyurethane foam in a packed bed bioreactor","authors":"Rohit Kushwaha , Ram Sharan Singh , Devendra Mohan","doi":"10.1016/j.jwpe.2025.107471","DOIUrl":"10.1016/j.jwpe.2025.107471","url":null,"abstract":"<div><div>Arsenic contamination in groundwater is a cause of global concern. Bioremediation presents a viable alternative to conventional methods employed for arsenic treatment. This study investigated the use of bacteria immobilized on polyurethane foam (PUF) for arsenic remediation in a recirculating packed bed bioreactor. The effectiveness of <em>Proteus alimentorum</em> strain TY6 and <em>Pseudomonas aeruginosa</em> strain K7Pb for removal of As(III) and As(V) was evaluated. Concentrations of arsenic ranged from 250 μg/L to 50 mg/L at varying flow rates. The removal efficiency of TY6 varied from 0.45 % to 99.50 % for As(III) and 0.75 % to 98.40 % for As(V). For K7Pb, the efficiency ranged from 0.79 % to 99.30 % for As(III) and 0.80 % to 99.40 % for As(V). Bacteria immobilized on PUF were found to be highly efficient in arsenic removal. The removal efficacy was found to be above 65 % even at a concentration of 50 mg/L for both bacteria. Both bacterial strains also demonstrated significant potential for arsenic biotransformation. TY6 only oxidized As(III) to As(V), whereas K7Pb only reduced As(V) to As(III). The outcomes indicated that both strains possessed substantial potential for arsenic remediation.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107471"},"PeriodicalIF":6.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0