Water Environment Research最新文献_第4页

Electrospinning-Graphene Promoted Low-Temperature Nitrogen Removal of Immobilized ANAMMOX Granules. 电纺丝-石墨烯促进固定化厌氧氨氧化颗粒的低温脱氮。

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70612

Yi-Lian Wang, Lin-Hua Zhang, Tong-Xuan Gai, Qi-Ming Zhou, Jing Zhang, Yu Wu, Yi-Bing Wang, Guo-Yuan Shi, Yan Wen, Lin Liu, Li-Tao Luo

{"title":"Electrospinning-Graphene Promoted Low-Temperature Nitrogen Removal of Immobilized ANAMMOX Granules.","authors":"Yi-Lian Wang, Lin-Hua Zhang, Tong-Xuan Gai, Qi-Ming Zhou, Jing Zhang, Yu Wu, Yi-Bing Wang, Guo-Yuan Shi, Yan Wen, Lin Liu, Li-Tao Luo","doi":"10.1002/wer.70612","DOIUrl":"https://doi.org/10.1002/wer.70612","url":null,"abstract":"To address the limited nitrogen removal performance of anaerobic ammonium oxidation (ANAMMOX) processes at low temperatures, this study successfully enhanced the low-temperature nitrogen removal performance of immobilized ANAMMOX granules by electrospinning (ES) and reduced graphene oxide (RGO). The lab-scale experimental results indicated that the total inorganic nitrogen (TIN) removal efficiency of novel immobilized ANAMMOX granules (M3) coated with 70-μm-thick chitosan/polyacrylonitrile electrospun membranes (CS/PAN-ES) and modified with 1.0 mg/(gVSS) RGO was significantly higher than M1 (common immobilized granules) and M2 (immobilized granules modified with 1.0 mg/(gVSS) RGO) at 4°C-13°C, especially at 4°C (60.9%-71.0%). These improvements were attributed to the stimulation of ANAMMOX activity at low temperatures by RGO and the enhanced structural stability of immobilized granules by CS/PAN-ES membranes. Furthermore, based on 16S rRNA sequencing analysis, CS/PAN-ES membranes and RGO synergistically promoted the growth of Candidatus Kuenenia (6.2% → 21.6%) and increased the abundance of functional genes nirK, hzs, and hzo at 4°C-13°C. This represents an important mechanism by which CS/PAN-ES membranes and RGO synergistically improved the extremely low-temperature activity of immobilized ANAMMOX granules. This study provides an effective strategy for the application of ANAMMOX processes in low-temperature environments.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70612"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149082220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deciphering Groundwater Hydrogeochemical Evolution and Anthropogenic Influences in Xingtai, North China: Insights From Multivariate Analysis, Nitrate Indicators, and Health Risk Assessment. 邢台地下水水文地球化学演化及其人为影响：多变量分析、硝酸盐指标和健康风险评价的启示

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70601

Yong Zhai, Zhaorui Wang, Yuan Kong, Pinlu Yang

{"title":"Deciphering Groundwater Hydrogeochemical Evolution and Anthropogenic Influences in Xingtai, North China: Insights From Multivariate Analysis, Nitrate Indicators, and Health Risk Assessment.","authors":"Yong Zhai, Zhaorui Wang, Yuan Kong, Pinlu Yang","doi":"10.1002/wer.70601","DOIUrl":"10.1002/wer.70601","url":null,"abstract":"Understanding natural hydrogeochemical processes and anthropogenic disturbances is essential for sustainable groundwater management. This study investigated groundwater hydrogeochemical evolution in Xingtai, North China, using hydrochemical data from three campaigns (2016: n = 61; 2022: n = 89; 2024: n = 48) via integrated approaches including Piper and Gibbs diagrams, ion ratios, chloro-alkaline indices (CAI), principal component analysis (PCA), and nitrate-based health risk assessment. Groundwater was predominantly Ca-HCO3 type but shifted toward Ca-SO4, with Ca-HCO3 decreasing from 83.6% to 58.3% and Ca-SO4 increasing from 16.4% to 37.5%. Rock weathering dominated groundwater chemistry in every campaign, with essentially all samples plotting in the rock-weathering domain of the Gibbs diagram (100% of 2016 samples, 95.5% of 2022 samples, and 97.9% of 2024 samples). CAI analysis revealed a shift from dominantly direct ion exchange in 2016-2022 toward a more balanced regime with reverse ion exchange becoming more prominent in 2024. The proportion of samples with unacceptable non-carcinogenic risks (HQ ≥ 1) for children rose from none in 2022 to 2.1% in 2024, confined to persistent, co-located hot spots, underscoring the need for targeted nitrate management.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70601"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149076030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MXene-Based Sustainable Semiconducting Materials for Integrated Wastewater Treatment and Energy Recovery Applications. 基于mxene的可持续半导体材料在污水处理和能源回收中的应用。

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70624

A Madhan Kumar, Anitha Gopalan, Anju Anna Jacob, N Prabhu

{"title":"MXene-Based Sustainable Semiconducting Materials for Integrated Wastewater Treatment and Energy Recovery Applications.","authors":"A Madhan Kumar, Anitha Gopalan, Anju Anna Jacob, N Prabhu","doi":"10.1002/wer.70624","DOIUrl":"https://doi.org/10.1002/wer.70624","url":null,"abstract":"Wastewater treatment and sustainable energy recovery are two key approaches to achieve circular water management and carbon neutral technologies. The semiconducting MXene-based materials have gained widespread attention as multifunctional platform materials because of their easily tunable electronic structures, high number of surface functional groups, and efficient charge-transfer properties. The crystal chemistry, bandgap engineering, charge transport mechanisms, and rational design of semiconducting MXenes and their heterostructures are summarized. Recent developments in wastewater treatment applications including adsorption, photocatalysis, electrocatalysis, membrane separation, and capacitive deionization are critically evaluated, as well as energy recovery technologies like hydrogen production, microbial electrochemical systems, nutrient recovery, and integrated water-energy conversion. The practical implementation is further assessed by reactor engineering, performance benchmarking, stability, sustainability, and materials discovery by artificial intelligence. Last but not least, important challenges and future research directions are presented to accelerate the development of semiconducting MXene-based technologies for efficient wastewater and energy-positive environmental systems.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70624"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149114909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable Production of KOH-Activated Microporous Carbon From Walnut Shell Biomass for the Adsorption of Cationic and Anionic Dye Pollutants. 核桃壳生物质可持续生产koh活化微孔炭吸附阳离子和阴离子染料污染物。

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70584

Khadidja Khalili, Mokhtar Benzekri Benallou, Zohra Mekibes, Nadia Douara, Saleh Gamal Saleh Yaslam, Mohamed Allal, Abdelghani Bouchama, Benaouda Bestani, Noureddine Benderdouche, Abdelkader Chouaih, Hakim Aguedal

{"title":"Sustainable Production of KOH-Activated Microporous Carbon From Walnut Shell Biomass for the Adsorption of Cationic and Anionic Dye Pollutants.","authors":"Khadidja Khalili, Mokhtar Benzekri Benallou, Zohra Mekibes, Nadia Douara, Saleh Gamal Saleh Yaslam, Mohamed Allal, Abdelghani Bouchama, Benaouda Bestani, Noureddine Benderdouche, Abdelkader Chouaih, Hakim Aguedal","doi":"10.1002/wer.70584","DOIUrl":"https://doi.org/10.1002/wer.70584","url":null,"abstract":"This study aimed to develop activated carbon (K-AC) from walnut shells and evaluate its effectiveness for removing malachite green (MG) and Acid Red 14 (AR14) from aqueous solutions. The adsorbent was characterized using TGA/DTA, SEM-EDX, XRD, XPS, FTIR, pHPZC, and textural analyses. K-AC exhibited a BET surface area of 750 m2 g-1, an iodine number of 660.04 mg g-1, and a methylene blue index of 55.61 mg g-1. Batch adsorption experiments were performed to investigate the effects of contact time, adsorbent dose, and pH, and equilibrium and kinetic data were modeled using established adsorption models. The maximum adsorption capacities were 424.31 mg g-1 for MG and 72.10 mg g-1 for AR14. The Langmuir and Temkin models provided the best fits for MG and AR14, respectively, while the adsorption kinetics followed the pseudo-second-order model for both dyes. Thermodynamic analysis indicated that adsorption was spontaneous and endothermic. These results demonstrate the potential of walnut shell-derived K-AC as an effective and sustainable adsorbent for dye removal from wastewater.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70584"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149171272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Multivariate Statistics, Geochemical Modeling, and Multi-Isotopes to Identify the Formation Mechanism of Cold and Thermal Groundwaters in the Western Tibetan Plateau. 利用多元统计、地球化学模拟和多同位素识别青藏高原西部冷热地下水形成机制

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70590

Qifeng Zeng, Quzong Ciren, Yadong Zheng, Qunpei Danzeng, Yajing Wang, Zhao Liu

{"title":"Using Multivariate Statistics, Geochemical Modeling, and Multi-Isotopes to Identify the Formation Mechanism of Cold and Thermal Groundwaters in the Western Tibetan Plateau.","authors":"Qifeng Zeng, Quzong Ciren, Yadong Zheng, Qunpei Danzeng, Yajing Wang, Zhao Liu","doi":"10.1002/wer.70590","DOIUrl":"10.1002/wer.70590","url":null,"abstract":"Groundwater is an indispensable material foundation for social and economic development and the most important renewable resource. Water scarcity in the western Tibetan Plateau severely constrains sustainable development. Although cold and thermal groundwaters have been investigated, limited understanding of their genesis hinders utilization. This study aims to analyze the hydrochemical processes of groundwater in the western Tibetan Plateau by integrating multiple statistical methods, geochemical modeling, and machine learning. Results show that the cold groundwater total dissolved solids (TDS) ranges from 57.58 to 766.43 mg/L, mainly of the HCO3-Ca type, while the thermal groundwater TDS ranges from 285.4 to 4746 mg/L, mainly of the HCO3-Na type. Both groups of recharges originate from meteoric water/meltwater, subsequently undergoing water-rock interaction (dissolution of carbonate, silicate, and halide minerals) and cation exchange. Cold groundwater is characterized by silicate weathering and slight calcite precipitation, while thermal groundwater exhibits stronger. The six key influencing factors are ranked according to their contributions: evaporation-concentration (28.6%) > comprehensive factor (23.8) > cation exchange (19%) > human activities (14.3%) > carbonate dissolution (9.5%) > gypsum dissolution (4.8%). The silicon-enthalpy mixing model quantitatively constrains the thermal groundwater system, revealing a deep reservoir temperature of 136.2°C-235.9°C and a significant cold-water mixing ratio of 50%-83.1%. These findings support rational development and protection of groundwater resources in the Tibetan Plateau.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70590"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149115313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Convex, Real-Time Koopman Model Predictive Control of Activated-Sludge Aeration: Constraint-Aware Operation With an Explicit Energy-Nitrous-Oxide Operating Frontier. 凸，实时Koopman模型预测控制的活性污泥曝气：约束意识操作与明确的能量-氧化亚氮操作边界。

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70597

Bayram Arda Kuş

{"title":"Convex, Real-Time Koopman Model Predictive Control of Activated-Sludge Aeration: Constraint-Aware Operation With an Explicit Energy-Nitrous-Oxide Operating Frontier.","authors":"Bayram Arda Kuş","doi":"10.1002/wer.70597","DOIUrl":"https://doi.org/10.1002/wer.70597","url":null,"abstract":"Aeration is the largest energy consumer in activated-sludge treatment and a principal control over nitrous oxide (N2O), a dominant contributor to a plant's carbon footprint, while effluent limits remain nonnegotiable. This paper develops a convex Koopman-operator model predictive controller (MPC) for that three-way trade-off. Extended dynamic mode decomposition identifies a linear predictor of the nonlinear process, N2O included; successive linear programming reduces each control step to a strictly convex quadratic program with explicit ammonia and total-nitrogen constraints, an offset-free correction and an influent forecast, solved in about 9 ms against a 15-min interval. The predictor accounts for 96.7% of output variance one step ahead and 73.4% at the 90-min horizon, against 71.9% and 39.8% for local linearization. On the single-reactor reference model the controller eliminated effluent-ammonia violation over 10 identification and noise realizations, against 7.5 and 15.4 h for fixed-dissolved-oxygen and ammonia-cascade baselines at indistinguishable aeration energy, and sweeping the emission weight traced a monotone frontier along which each per cent of N2O abatement costs about 2.4% of aeration energy. Transferred without modification to a five-tank Activated Sludge Model No. 1 cascade manipulating aeration and internal recirculation, it removed ammonia violation from 69 h to none and lowered the nitrogen-load effluent index by 38% at N2O parity. A component-wise ablation identifies the lifted predictor and the offset-free correction, not the influent preview, as the sources of compliance. Run unchanged on an independently structured evaluation plant, the compliance and energy results transferred but the emission magnitudes and the ranking of the controllers on N2O did not, which bounds what the emission results license.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70597"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149138429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated Biovalorization of Wastewater for Sustainable Resource Management-Circular Economy. 面向可持续资源管理的废水综合生物增值——循环经济。

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70628

Hung Tang Tri, Minh Dat Nguyen, Huu Thien Nguyen, Thi Thu Huong Dinh

{"title":"Integrated Biovalorization of Wastewater for Sustainable Resource Management-Circular Economy.","authors":"Hung Tang Tri, Minh Dat Nguyen, Huu Thien Nguyen, Thi Thu Huong Dinh","doi":"10.1002/wer.70628","DOIUrl":"https://doi.org/10.1002/wer.70628","url":null,"abstract":"Wastewater is increasingly not just seen as a burden on the environment but also a source of valuable water, nutrients, energy, carbon, and high value bioproducts for recovery. Integrated biovalorization is a promising strategy to develop conventional wastewater treatment systems into resource generating and circular ones. The review critically assesses the emerging biological platforms and integrated process configurations for wastewater biovalorization (WWB) processes such as anaerobic digestion, microbial fermentation, microalgae-bacteria systems, microbial electrochemical technologies, biofertilizer production, and wastewater biorefineries: special focus on conversion of organic carbon to volatile fatty acids, biogas, biohydrogen, biopolymer, protein, enzymes, and other value-added products, recovery of N, P, and water reclamation. The review is focused on the technological performance, resource recovery efficiency, process limitations, environmental sustainability, and commercialization opportunities of the integrated pathways. The potential of membrane technologies, nanomaterials, process intensification, and artificial intelligence and digital monitoring to enhance the process efficiency is also critically discussed. Furthermore, techno-economic analysis, life cycle effects, contaminant risks, regulatory issues, and scale-up issues are determined. Hence, future research directions towards smart, decentralized, low carbon, and commercially viable wastewater biorefineries are suggested.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70628"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decoupling Algal Biomass and Microbial Attenuation in Wastewater-Fed Fisheries: A Spatiotemporal Analysis in an Indian Ramsar Site. 印度拉姆萨尔湿地水体中藻类生物量与微生物衰减的时空分析。

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70630

Santanu Roy, Agniswar Chakraborty, Toufique Shahnowaz, Partha Pratim Mondal, Souryadeep Mukherjee

{"title":"Decoupling Algal Biomass and Microbial Attenuation in Wastewater-Fed Fisheries: A Spatiotemporal Analysis in an Indian Ramsar Site.","authors":"Santanu Roy, Agniswar Chakraborty, Toufique Shahnowaz, Partha Pratim Mondal, Souryadeep Mukherjee","doi":"10.1002/wer.70630","DOIUrl":"https://doi.org/10.1002/wer.70630","url":null,"abstract":"Although integrated wastewater-fed fisheries in the Ramsar-designated East Kolkata Wetlands (EKW) provide important ecosystem services, the long-term spatial and temporal dynamics of microbial attenuation in these managed pond systems remain insufficiently characterized. This study assessed the spatiotemporal dynamics of chlorophyll-a concentration and culturable bacterial abundance along a canal-to-pond transition system over 22 months. Water samples were collected from four fixed locations during 22 sampling months between September 2023 and August 2025 to determine total viable count (TVC), chlorophyll-a concentration, and chlorophyll-a-based trophic state index (TSI). TVC decreased by 79.86%, from a geometric mean of 22,409 colony-forming units (CFU/mL) at the canal source to 4513 CFU/mL at the distal pond site, and differed significantly among sampling locations (p < 0.0001). TVC was also significantly higher during the dry season than during the wet season (Mann-Whitney U = 1244.5, p = 0.017). Chlorophyll-a concentrations did not differ significantly among sampling locations (p = 0.078), although the mean concentration was 82.8% higher across the three pond stations than at the canal source. Mean TSI values ranged from 47.1 to 52.3 across the sampled gradient. Predictive modeling with Analysis of covariance (ANCOVA) showed that chlorophyll-a was not a significant predictor of log10-transformed TVC after accounting for sampling location (F = 0.48, p = 0.491). These results suggest that site-associated differences, rather than a statistically detectable chlorophyll-a effect, are associated with microbial decline within the sampled gradient. Because other physical, chemical, hydraulic, and biological factors were not measured, the observed spatial association cannot be attributed to location alone.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70630"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solophenyl Red 7BE Dye Biosorption Using Raw Sunflower Seed Hulls: Ionic Strength, Regeneration, and Real Textile Effluent Application. 使用生葵花籽壳生物吸附索罗苯基红7BE染料：离子强度、再生和真正的纺织废水应用。

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70616

Selma Si Smail, Wahiba Lemlikchi, Marie Laure Fauconnier, Safia Lemlikchi, Messaoud Hachemi, Amina Belounis, Adhya-Eddine Hamitouche

{"title":"Solophenyl Red 7BE Dye Biosorption Using Raw Sunflower Seed Hulls: Ionic Strength, Regeneration, and Real Textile Effluent Application.","authors":"Selma Si Smail, Wahiba Lemlikchi, Marie Laure Fauconnier, Safia Lemlikchi, Messaoud Hachemi, Amina Belounis, Adhya-Eddine Hamitouche","doi":"10.1002/wer.70616","DOIUrl":"https://doi.org/10.1002/wer.70616","url":null,"abstract":"Despites its widespread use in the textile industry, Solophenyl Red 7BE dye remains poorly studied. This study investigates the removal of the anionic dye, Solophenyl Red 7BE (Direct Red 227), from aqueous solutions and subsequently validates the process using a real textile effluent. The low-cost lignocellulosic agro-industrial by-product, raw sunflower seed hulls, was used as biosorbent. Batch experiments achieved over 97% removal at neutral pH (7-7.5), 24°C ± 3°C temperature, 20 mg L-1 dye concentration, 2.5 g L-1 biosorbent, and 90 min contact time. The regeneration and reusability of the biosorbent were also evaluated using NaOH to assess its potential for repeated adsorption cycles. Results show that the removal is efficient until the third cycle. It is also found that NaOH is the suitable eluent for the desorption of anionic dyes. The adsorption process followed the pseudo-first-order kinetic model and was well described by the Temkin isotherm. Analysis techniques such as FTIR, XRD, XPS, BET, SEM-EDS, and thermogravimetric analysis (TGA) confirm the involvement of surface functional groups. Dye removal experiments from real textile effluent showed that adsorption increased from 17.6% to 84.6% after NaCl addition. This demonstrates that the controlled ionic strength is an effective operational strategy for enhancing the adsorption of Solophenyl Red 7BE under realistic wastewater conditions. These findings provide a practical basis for the sustainable treatment of saline textile wastewaters containing poorly investigated dyes and encourage further evaluation of low-cost biosorbents under realistic industrial conditions.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70616"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149115204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Incorporating Biocarriers in Membrane Bioreactors for Wastewater Treatment and Membrane Fouling Control From a Microbial Perspective. 在膜生物反应器中加入生物载体处理废水及从微生物角度控制膜污染

IF 2.8 4区环境科学与生态学

Water Environment Research Pub Date : 2026-10-01 DOI: 10.1002/wer.70610

Phan Nhu Nguyet, Nguyen Thi Mai Phuong, Ngo Hoang Long, Duong Hoang Yen, Nguyen Phuoc Hieu, Nguyen Ai Le

{"title":"Incorporating Biocarriers in Membrane Bioreactors for Wastewater Treatment and Membrane Fouling Control From a Microbial Perspective.","authors":"Phan Nhu Nguyet, Nguyen Thi Mai Phuong, Ngo Hoang Long, Duong Hoang Yen, Nguyen Phuoc Hieu, Nguyen Ai Le","doi":"10.1002/wer.70610","DOIUrl":"https://doi.org/10.1002/wer.70610","url":null,"abstract":"Membrane bioreactors (MBRs) are widely applied for advanced wastewater treatment, but membrane fouling remains a major constraint on long-term operational stability and economic viability. Biocarrier-assisted MBRs (BC-MBRs) have emerged as a promising strategy to simultaneously improve pollutant removal and mitigate fouling through microbial ecological regulation. This review critically evaluates polymeric, carbon-based, and iron-based biocarriers, with emphasis on their effects on microbial community assembly, biofilm development, extracellular polymeric substances (EPS), soluble microbial products (SMP), and membrane fouling. Current evidence indicates that biocarriers enhance biomass retention, promote microbial functional specialization, and create stratified ecological niches that support nitrifiers, denitrifiers, and degraders of recalcitrant contaminants. Membrane fouling is increasingly recognized as a reactor-wide ecological process involving interactions among bulk sludge, membrane cake layers, and carrier-associated biofilms. Quorum sensing (QS) and quorum quenching (QQ) are further considered as biologically targeted approaches for controlling biofilm development and fouling. Reported QQ applications have achieved approximately 10%-80% reductions in EPS production and 25%-65% reductions in biofilm accumulation, while extending membrane filtration cycles by two- to four-fold. Integrating QQ with biocarrier-based systems represents a promising direction for next-generation fouling control. Future research should prioritize mechanistic carrier-microbe-fouling relationships, multifunctional carrier design, intelligent process control, and pilot- and full-scale validation. Overall, BC-MBRs provide a versatile platform for enhancing treatment efficiency, fouling resistance, and operational sustainability in advanced wastewater treatment.","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"98 10","pages":"e70610"},"PeriodicalIF":2.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149115425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0