Membranes最新文献_第7页

Operational Stability and Treatment Efficiency of a Reverse Osmosis Plant Treating Highly Mineralized Water: Results of a Four-Year Follow-Up Study. 反渗透装置处理高矿化水的操作稳定性和处理效率：一项为期四年的随访研究结果。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-31 DOI: 10.3390/membranes16090292

Smail Es Sellami, Taleb Abdeslam, Mohammed El Hachoumi, Badr El Fathi

{"title":"Operational Stability and Treatment Efficiency of a Reverse Osmosis Plant Treating Highly Mineralized Water: Results of a Four-Year Follow-Up Study.","authors":"Smail Es Sellami, Taleb Abdeslam, Mohammed El Hachoumi, Badr El Fathi","doi":"10.3390/membranes16090292","DOIUrl":"10.3390/membranes16090292","url":null,"abstract":"This study evaluates the long-term operational performance of a full-scale reverse osmosis desalination plant treating highly mineralized water under real industrial operating conditions. Unlike conventional laboratory or pilot-scale investigations, the analysis is based on four years of operational data (2020-2024), providing a representative assessment of membrane system behavior under variable environmental and hydraulic conditions. Statistical analyses including descriptive statistics, time-series analysis, Pearson correlation, and inter-annual comparisons were performed using Python-based data-processing tools. An Operational Stability Index was also introduced to quantify process consistency over time. The results demonstrate stable desalination performance, with salt rejection exceeding 90%. Operational monitoring indicated effective pretreatment conditions, low SDI values, and controlled membrane fouling under long-term operation. Differential pressure evolution and cleaning-in-place performance further confirmed the effectiveness of the implemented fouling mitigation strategy. Membrane autopsy investigations revealed the coexistence of biological fouling, silica scaling, and localized oxidative degradation, highlighting the importance of integrated pretreatment and operational control. The findings demonstrate the value of long-term industrial monitoring for understanding membrane performance, fouling behavior, and operational stability in full-scale RO systems. This approach supports data-driven operational optimization and may contribute to the future development of predictive monitoring and intelligent desalination-management frameworks as a Digital Twin.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved Removal of Neonicotinoid Insecticides from Real Water Matrices by Modified UF and NF Membranes. 改性超滤膜和纳滤膜对真实水基质中新烟碱类杀虫剂的去除效果研究

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090289

Francisco J Real, Juan L Acero, Esther Matamoros, Carolina Godoy

{"title":"Improved Removal of Neonicotinoid Insecticides from Real Water Matrices by Modified UF and NF Membranes.","authors":"Francisco J Real, Juan L Acero, Esther Matamoros, Carolina Godoy","doi":"10.3390/membranes16090289","DOIUrl":"10.3390/membranes16090289","url":null,"abstract":"The removal of five neonicotinoid insecticides, acetamiprid, chlothianidin, imidacloprid, thiacloprid, and thiamethoxam, was explored using various commercial ultrafiltration (MW, PT, and GK) and nanofiltration (HL) membranes provided by GE Osmonics Labstore. Several modification techniques have also been applied to one ultrafiltration membrane, including immersion in hot water, sodium hydroxide, and ethanol solutions, as well as interfacial polymerization with monomers such as polyethyleneimine and trimesoyl chloride, to improve micropollutant retention while maintaining adequate permeability. The results show that only immersion in ethanol (60% solution or absolute ethanol) improved membrane performance. Among the reagents and conditions tested for membrane surface modification via polymerization, the sequential application of polyethyleneimine, trimesoyl chloride, oven curing at 60 °C, followed by immersion in a glycerol solution was the most efficient. The optimal modified membrane was tested with real water matrices (two secondary effluents from wastewater treatment plants and a surface water sample) in which the neonicotinoids were dissolved. The modified ultrafiltration membrane showed higher retention (80-95%) than commercial ultrafiltration (15-60%) and levels similar to nanofiltration membranes (70-95%), demonstrating greater efficiency in retaining neonicotinoids under real water conditions, although the permeability was about half that of the commercial nanofiltration membrane. Therefore, this modification process is a promising alternative to commercial membranes for removing micropollutants from urban wastewater and should be considered.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609286/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailoring Polyetherimide Ultrafiltration Membranes via Non-Solvent- and Vapor-Induced Phase Separation: Effects of Fabrication Pathway and Membrane Formulation on Morphology and Bovine Serum Albumin Separation Performance. 通过非溶剂和气相分离裁剪聚醚酰亚胺超滤膜：制备途径和膜配方对形态和牛血清白蛋白分离性能的影响。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090288

Mohammad Hosein Moghadasin, Masoud Salavati, Mohammed Majdoub, Ahmed Al-Ostaz, Alexander M Lopez, Sasan Nouranian

{"title":"Tailoring Polyetherimide Ultrafiltration Membranes via Non-Solvent- and Vapor-Induced Phase Separation: Effects of Fabrication Pathway and Membrane Formulation on Morphology and Bovine Serum Albumin Separation Performance.","authors":"Mohammad Hosein Moghadasin, Masoud Salavati, Mohammed Majdoub, Ahmed Al-Ostaz, Alexander M Lopez, Sasan Nouranian","doi":"10.3390/membranes16090288","DOIUrl":"10.3390/membranes16090288","url":null,"abstract":"Polyetherimide (PEI) ultrafiltration membranes were fabricated for bovine serum albumin (BSA) separation using nonsolvent-induced phase separation (NIPS) and vapor-induced phase separation (VIPS). In the NIPS approach, membranes containing varying amounts of Pluronic P-123, with or without graphene nanoplatelets (GNPs), were prepared. Pluronic P-123 acted as a pore-forming agent, while GNPs enhanced permeability without compromising rejection. The membrane with 1 wt.% Pluronic P-123 achieved a pure water flux (PWF) of 355 LMH and 90% BSA rejection. Incorporating 1 wt.% GNPs further improved performance to 747 LMH and 98% rejection. VIPS membranes were fabricated using the same composition as N10, containing 17 wt.% PEI and 1 wt.% Pluronic P-123 without GNPs, to isolate the effect of the fabrication pathway. Increasing vapor exposure time reduced PWF but generally improved BSA rejection, whereas higher RH increased PWF while decreasing rejection. The composition-matched NIPS membrane, N10, exhibited a PWF of 355 LMH and approximately 91% BSA rejection. In comparison, the highest PWF and BSA rejection among the VIPS membranes were 91 LMH and 76.5%, respectively, and the selected balanced VIPS condition at 30 min and 65% RH yielded approximately 49 LMH and 55% rejection. The higher performance of N11, which achieved 747 LMH and 98% rejection, is attributed to GNP incorporation within the NIPS series and was not used to isolate the fabrication-pathway effect. Overall, the composition-matched comparison demonstrates that NIPS produced a more favorable morphology and BSA separation performance than VIPS under the investigated conditions.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609832/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Myelin Sheath as a Multilamellar Electromechanical System: Bilayer Stack Analogs, Energy Buffering, and Biological Memory. 髓鞘作为多层机电系统：双层堆叠类似物、能量缓冲和生物记忆。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090285

Dima Bolmatov, Zack Woodel, Igor M Gussev, Miguel Turrero García, Erik B Watkins, Yong Q Cai, Ilia N Ivanov

{"title":"The Myelin Sheath as a Multilamellar Electromechanical System: Bilayer Stack Analogs, Energy Buffering, and Biological Memory.","authors":"Dima Bolmatov, Zack Woodel, Igor M Gussev, Miguel Turrero García, Erik B Watkins, Yong Q Cai, Ilia N Ivanov","doi":"10.3390/membranes16090285","DOIUrl":"10.3390/membranes16090285","url":null,"abstract":"The myelin sheath has traditionally been viewed as a passive electrical insulator that accelerates nerve impulse propagation. Recent experimental studies, however, indicate that myelin is a dynamic biological material whose structure and hydration state adapt to neuronal activity, metabolic conditions, and environmental perturbations. Building on these observations, we propose a conceptual framework that treats myelin as an adaptive electromechanical multilamellar interface, in which coupled lipid bilayers, hydration layers, and interlayer interactions influence energy dissipation, structural adaptation, and history-dependent behavior. Within this framework, collective excitations and delayed relaxation processes are hypothesized to contribute to transient energy storage and adaptive responses to electrical activity in the integrated axon-glia system. We further argue that testing this framework requires multimodal characterization combining electrophysiology with neutron and X-ray scattering, terahertz spectroscopy, and data-driven analysis to establish quantitative relationships between membrane structure, dynamics, and function. This work outlines experimentally testable predictions and provides a foundation for investigating how electromechanical adaptation of myelin may contribute to normal neural function and the early biophysical changes associated with demyelinating disease.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609546/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Second-Pass Vessel Arrangement and Separation-Limited Operation in Two-Pass Seawater Reverse Osmosis Under Progressive Fouling: Implications for Electrolytic Hydrogen Production. 渐进式污染下两道海水反渗透的第二道容器布置和分离限制操作：对电解制氢的影响。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090290

Tomas Rojas, Pablo Cassorla, Adrian Rojas, Gonzalo Aguila

{"title":"Second-Pass Vessel Arrangement and Separation-Limited Operation in Two-Pass Seawater Reverse Osmosis Under Progressive Fouling: Implications for Electrolytic Hydrogen Production.","authors":"Tomas Rojas, Pablo Cassorla, Adrian Rojas, Gonzalo Aguila","doi":"10.3390/membranes16090290","DOIUrl":"10.3390/membranes16090290","url":null,"abstract":"Seawater reverse osmosis (SWRO) supplies the purification chain of electrolytic hydrogen plants, yet its long-term behaviour under fouling is rarely resolved at train level. This work presents a dynamic, quasi-steady-state model of a two-pass SWRO train and compares three second-pass architectures under progressive first-pass fouling, represented by time-evolving water- and solute-permeability coefficients. At each of 51 instants over a 500-day horizon, the operating point is re-optimized to minimize specific energy consumption (SEC), subject to a product limit of 20 mg·L-1 set by the downstream polishing stage rather than the electrolyzer. Two share-membrane types, element count and installed area, differ only in vessel arrangement; the third is the industrial reference. Arrangement alone changes SEC by 36.9-41.6% across three fouling scenarios, 8.38 against 11.46 kWh·m-3 under severe fouling, widening to 71% at fixed production. Fouling constrains the system through separation, not hydraulics: the technically admissible operating window widens as membranes degrade, whereas the window satisfying the product specification closes. The energy penalty of compliance begins at days 310 and 170, respectively, accumulating about twice as fast thereafter in the former. Energy recovery reduces SEC by 63-64% without altering the ordering.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13608914/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Leaf-Vein-Inspired Composite Flow Channel for Enhanced Mass Transport and Performance in Proton Exchange Membrane Fuel Cells. 质子交换膜燃料电池中增强质量传递和性能的叶脉复合通道。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090287

Tingjie Ba, Hongyi Zeng, Wanjun Wu, Dong Jiao, Yongyuan Huang

{"title":"A Leaf-Vein-Inspired Composite Flow Channel for Enhanced Mass Transport and Performance in Proton Exchange Membrane Fuel Cells.","authors":"Tingjie Ba, Hongyi Zeng, Wanjun Wu, Dong Jiao, Yongyuan Huang","doi":"10.3390/membranes16090287","DOIUrl":"10.3390/membranes16090287","url":null,"abstract":"A leaf-vein-serpentine composite flow field (L-SFF) is proposed to improve reactant distribution, water management, and electrochemical performance of proton exchange membrane fuel cells (PEMFCs). The L-SFF consists of a main trunk and multilevel branches inspired by coconut palm leaf veins, with a branching angle of 45° and a branch width of 2 mm. Three-dimensional multiphysics models of the traditional serpentine flow field (SPFF), cathode leaf-vein-serpentine flow field (S-LFF), and anode leaf-vein-serpentine flow field (L-SFF) were developed using COMSOL Multiphysics 6.1 to investigate current density, membrane water content, temperature distribution, and power output. Under 0.6 V, 353 K, and 1 bar conditions, the L-SFF achieves a maximum power density of 0.538 W·cm-2, approximately 2.1% higher than SPFF, with an average anode current density of 7092.0 A·m-2 and a current-density uniformity index of 0.135. The L-SFF also exhibits improved membrane water distribution, with an average water mole fraction of 0.513, and maintains an average membrane temperature of 356.61 K. Furthermore, the effect of GDL porosity on performance was evaluated. When the GDL porosity decreases from 0.8 to 0.2, the maximum power density decreases from 0.534 to 0.474 W·cm-2 for SPFF (11.2%) and from 0.547 to 0.489 W·cm-2 for L-SFF (10.6%), indicating better tolerance to variations in porous transport properties. The results demonstrate that the L-SFF structure enhances reactant transport, water management, and performance stability, providing an effective strategy for PEMFC flow-field optimization.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609170/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphological Engineering of Electrospun Recycled Polyethylene Terephthalate (r-PET) Nanofibrous Membranes for Sustainable Air Filtration: A Critical Review. 电纺丝再生聚对苯二甲酸乙二醇酯（r-PET）纳米纤维膜的形态工程研究进展。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-28 DOI: 10.3390/membranes16090286

Wei Lin Ng, Abu Bakar Sulong, Eng-Poh Ng, Soon Huat Tan

{"title":"Morphological Engineering of Electrospun Recycled Polyethylene Terephthalate (r-PET) Nanofibrous Membranes for Sustainable Air Filtration: A Critical Review.","authors":"Wei Lin Ng, Abu Bakar Sulong, Eng-Poh Ng, Soon Huat Tan","doi":"10.3390/membranes16090286","DOIUrl":"10.3390/membranes16090286","url":null,"abstract":"The growing demand for high-performance air filtration materials, coupled with increasing concerns over plastic waste accumulation, has accelerated interest in sustainable filtration technologies. Recycled polyethylene terephthalate (r-PET) has emerged as a promising feedstock for electrospun nanofibrous membranes due to the abundance, low cost, and sustainability of this plastic waste feedstock. The filtration performance of r-PET membranes has been demonstrated to be comparable to that of conventional virgin polymer filters. This review critically examines recent developments in electrospun r-PET nanofibrous membranes for air filtration applications, with particular emphasis on the role of membrane morphology in governing filtration performance. Unlike previous reviews that primarily summarize electrospinning techniques or recycled polymer applications, this review critically evaluates how membrane morphology-including fiber diameter, pore architecture, bead-on-string structures, and multilayer configurations-governs filtration performance in electrospun r-PET membranes. Evidence suggests that rational morphological engineering plays a more decisive role than polymer chemistry in overcoming the conventional filtration efficiency-pressure drop trade-off. Finally, future research opportunities in scalable manufacturing, environmentally benign processing, and artificial intelligence-assisted membrane design are discussed to support the development of next-generation sustainable air filtration media.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609643/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study on the Recycling of Sodium Citrate (Na₃Cit) Waste Solution via Bipolar Membrane Electrodialysis. 双极膜电渗析法回收柠檬酸钠废液的研究。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-27 DOI: 10.3390/membranes16090284

Young-Jae Lee, Min-Hyuk Seo, Jae-Hyuk Chang, Jun-Hee Kim, Jae-Woo Ahn

{"title":"A Study on the Recycling of Sodium Citrate (Na3Cit) Waste Solution via Bipolar Membrane Electrodialysis.","authors":"Young-Jae Lee, Min-Hyuk Seo, Jae-Hyuk Chang, Jun-Hee Kim, Jae-Woo Ahn","doi":"10.3390/membranes16090284","DOIUrl":"10.3390/membranes16090284","url":null,"abstract":"Citric acid-based leaching is gaining attention as an environmentally friendly alternative to conventional sulfuric acid-based processes for recycling spent lithium-ion batteries (LIBs), but it generates sodium citrate (Na3Cit)-rich wastewater that is difficult to treat using conventional technologies. Bipolar membrane (BM) electrodialysis (BMED), particularly a two-compartment BM/cation-exchange membrane (CEM) configuration, offers a simple and energy-efficient solution for simultaneously recovering acids and bases from such wastewater without external reagents, enabling a closed-loop resource-circulation approach that remains largely unexplored for this specific waste stream. This system was applied to treat Na3Cit wastewater generated from citric acid-based spent LIB leaching, and the recovery feasibility and process performance of citric acid and NaOH were evaluated. The effects of feed concentration, current density, initial base concentration, and initial base volume on NaOH recovery, current efficiency, and energy consumption were investigated. Under the optimal conditions (1.00 M Na3Cit, 300 A/m2, 0.1 M NaOH, 1.25 L), a NaOH recovery of 93.93%, current efficiency of 92.55%, and energy consumption of 0.65 kWh/kg were achieved. This study demonstrates that Na3Cit wastewater can be treated via BMED without external reagents, yielding high-purity NaOH, whereas the recovered acid stream contains residual unreacted Na3Cit, and its direct reuse in the leaching process requires further verification. These findings provide a fundamental basis for developing BMED-based resource-circular processes.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609060/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Power-Dissipation Model for Water Dissociation in Bipolar Membranes: Model Extension to High Current Density and Experimental Validation. 双极膜中水解离的功率耗散模型：模型扩展到高电流密度和实验验证。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-26 DOI: 10.3390/membranes16090283

Mohamed Fadel Anass Ma-El-Ainine, Rachid Boukhili, Oumarou Savadogo

{"title":"Power-Dissipation Model for Water Dissociation in Bipolar Membranes: Model Extension to High Current Density and Experimental Validation.","authors":"Mohamed Fadel Anass Ma-El-Ainine, Rachid Boukhili, Oumarou Savadogo","doi":"10.3390/membranes16090283","DOIUrl":"10.3390/membranes16090283","url":null,"abstract":"Water dissociation (WD) at the internal junction of bipolar membranes (BPMs) is the key process enabling acid/base generation under reverse bias, yet the physical origin of its strong enhancement remains debated. In our previous work, we proposed a power-dissipation model in which WD is enhanced by an intense electric field through local power dissipation by autoprotolysis ions. Here, we experimentally validate this model using three commercial BPMs under acid/base and neutral salt conditions and extend it to high current density by incorporating finite water supply to the BPM junction. Under acid/base conditions, two BPMs showed strong field-dominated quadratic behavior, while a catalyst-containing BPM displayed a predominantly linear response, indicating that heterogeneous interfacial catalysis can mask the purely field-driven signature. In neutral Na2SO4, all three BPMs exhibited excellent quadratic fits, confirming that the predicted JWD∝Uj2 behavior is robust. The fitted prefactor varied with membrane type and electrolyte configuration, reflecting differences in hydration, junction thickness, transport behavior, and catalysis effect. The model was extended at higher current density to include finite diffusive water supply to the junction. The resulting saturation law links the intrinsic quadratic WD current JWD to a water-transport-limited current Jlim,2, and predicts an inflection point at JWD,inf = 0.25 Jlim,2.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609349/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanomaterial-Modified Antibacterial Membranes for Water Treatment: From Dimensional Classification and Modification Strategies to Antimicrobial Mechanisms. 水处理用纳米材料修饰抗菌膜：从尺寸分类、修饰策略到抗菌机理。

IF 4.2 4区工程技术

Membranes Pub Date : 2026-08-24 DOI: 10.3390/membranes16090282

Lu Pei, Bingrong Wang, Yutong Zheng, Yang Liu, Yang Zhou, Xiangdong Zeng

{"title":"Nanomaterial-Modified Antibacterial Membranes for Water Treatment: From Dimensional Classification and Modification Strategies to Antimicrobial Mechanisms.","authors":"Lu Pei, Bingrong Wang, Yutong Zheng, Yang Liu, Yang Zhou, Xiangdong Zeng","doi":"10.3390/membranes16090282","DOIUrl":"10.3390/membranes16090282","url":null,"abstract":"Membrane separation technology is extensively used in water treatment. However, during long-term operation, biofouling caused by bacteria and other microorganisms significantly limits the service life of membranes. Introducing antibacterial nanomaterials onto the membrane surface or into the internal structure is an effective way to combat biofouling. This review systematically summarizes recent progress in antibacterial membranes modified with different nanomaterials. First, we classify antibacterial nanomaterials by dimensionality and highlight their physicochemical properties and effects on overall membrane performance. Furthermore, we summarize the advantages, disadvantages, and applicability of three antibacterial nanomaterial modification strategies for membranes, including surface coating, grafting, and blending. Subsequently, we analyze in depth the main antibacterial mechanisms that enhance membrane performance, including metal ion release, reactive oxygen species oxidation, physical contact disruption, and anti-adhesion, as well as their synergistic effects. Finally, we critically evaluate the remaining challenges, such as interfacial compatibility between nanomaterials and polymers, controlled release of metal ions, and environmental safety. This review provides a reference for the rational design of high-performance antibacterial membranes.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"16 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13609226/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149039637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0