Journal of Membrane Science最新文献

{"title":"Automating the determination of pore size distribution in liquid separation membranes via solute retention experiments","authors":"Kenia M. Martinez ,&nbsp;Rifan Hardian ,&nbsp;Gergo Ignacz ,&nbsp;Gyorgy Szekely","doi":"10.1016/j.memsci.2025.124015","DOIUrl":"10.1016/j.memsci.2025.124015","url":null,"abstract":"<div><div>Membranes used for molecular separation in liquid media require precise determination of their pore size distribution (PSD). Analytical methods, such as scanning electron microscopy and atomic force microscopy, are limited to surface pore-size measurements and encounter problems in characterizing membranes with complex anisotropic morphologies. Meanwhile, theoretical calculations for PSD determination involve intricate analyses that depend on solute and solvent properties as well as various mathematical models. To address these challenges, we developed PoreInsight, an open-source Python package that automates PSD determination via solute retention experiments. While PSD determination via solute retention is primarily applicable to pure size-exclusion membranes, including those used in microfiltration and ultrafiltration, it also provides a valuable framework for membranes like those in nanofiltration and reverse osmosis, where size exclusion is not the sole transport mechanism. PoreInsight employs a systematic approach that integrates solute and solvent properties to estimate key PSD parameters — mean pore size and standard deviation — by fitting experimental retention data to sigmoid functions or assuming a log-normal probability density function. This automated method enhances the reliability and reproducibility of PSD characterization. The PoreInsight code, documentation, working demo, and examples are available online at <span><span>www.OSNdatabase.com</span><svg><path></path></svg></span>. We evaluated the accuracy of various mathematical models and analyzed the effects of various parameters, such as the number of retention points, experimental retention errors, variation in solute radii, and molar volume equivalent estimation, on PSD determination. A good approximation of PSD depends on careful focus on experimental conditions, including precise determination of solvated solute radii, accurate retention data measurements, and careful selection of appropriate fitting models.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"726 ","pages":"Article 124015"},"PeriodicalIF":8.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid model as an efficient predictor of mass transfer behavior in hollow fiber membrane contactors with complex geometries","authors":"Yihan Yin,&nbsp;Hongxia Gao,&nbsp;Zhiwu Liang","doi":"10.1016/j.memsci.2025.124022","DOIUrl":"10.1016/j.memsci.2025.124022","url":null,"abstract":"<div><div>Hollow fiber membrane contactors coupling amine absorption method have emerged as an ideal choice for carbon capture due to their high specific surface area, low cost, and ease of scalability. In this study, COMSOL Multiphysics 6.0 software was used to develop three-dimensional (3D) and two-dimensional (2D) models to investigate the CO₂ mass transfer performance of N-Methyldiethanolamine (MDEA) + Piperazine (PZ) and 3-Dimethylamino-1-propanol (3DMA1P) + 2-(Methylamino)ethanol (MAE) blended solutions under various operating conditions, and the simulation results were evaluated with the experimental data. The results indicate that the outcomes obtained from the 2D model are generally higher than the experimental data, whereas the results from the 3D model show good agreement with the experimental data. Considering the stringent convergence conditions, low computational efficiency, and the inability of 3D models to dynamically describe the changes in mass transfer performance under membrane wetting conditions, a 2D-3D hybrid model was developed, making it possible to efficiently compute mass transfer performance during the dynamic membrane wetting process. The hybrid model was developed by quantifying the uneven fluid distribution from the 3D model into correction factors for both the gas and liquid phases, and incorporating these factors into the original 2D model. By comparing the simulation results of the hybrid model with experimental data, it is found that the non-wetting hybrid model for the MDEA + PZ blended solution exhibits strong agreement with experiments, achieving an absolute average relative deviation (AARD) within 4.95 %. Meanwhile, for the 3DMA1P + MAE mixed solution, the 5 % wetted hybrid model accurately predicts mass transfer performance with an AARD of less than 5.55 %. Moreover, the results obtained from the hybrid model are consistent with those from the 3D model, while significantly reducing the calculation time from over 3 h to less than 1 h. This demonstrates that the hybrid model can efficiently and accurately predict CO₂ absorption flux (J_CO2) and membrane wetting under various operating conditions.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124022"},"PeriodicalIF":8.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pyrene containing, highly conductive and robust poly (aryl piperidinium) anion exchange membranes for fuel cell applications","authors":"Omer Javed ,&nbsp;Shoutao Gong ,&nbsp;Xinli Zhang ,&nbsp;Long Han ,&nbsp;Haiyang Zhang ,&nbsp;Boning Zhang ,&nbsp;Quan Jin ,&nbsp;Min Yang ,&nbsp;Xiaoming Yan ,&nbsp;Gaohong He ,&nbsp;Fengxiang Zhang","doi":"10.1016/j.memsci.2025.124028","DOIUrl":"10.1016/j.memsci.2025.124028","url":null,"abstract":"<div><div>Anion exchange membrane fuel cells (AEMFCs) stand out as an advanced energy technology, featuring non-precious metals usable as catalysts to yield superior oxygen reduction kinetics compared with proton exchange membrane fuel cells. The quest for high-performance and durable anion exchange membranes (AEMs) is a primary focus in the development of AEMFCs. In this study, we have fabricated innovative series of AEMs by synthesizing a copolymer from disk shaped pyrene, 1-methyl-4-piperidone, and <em>p</em>-terphenyl, followed by the quaternization process of the produced polymer. AEMs incorporating pristine pyrene can enhance the microphase separation and free volume. This structural modification produces both free volume and localized stacking effect, which facilitates the creation of ion channels with reduced OH^- transport resistance. Notably, the synthesized qPPTP-10 AEM demonstrates significantly enhanced ion conductivity of 166.5 mS cm⁻¹ at 80 °C and 181.13 mS cm⁻¹ at 90 °C. Furthermore, the membrane exhibits impressive alkaline stability, with ion conductivity retention of 96.5 % and 86.2 % after 1500 h of treatment in 1 M and 2M NaOH, respectively at 80 °C. Moreover, qPPTP-10 based H₂-O₂ single cell achieves a peak power density of 1374 mW cm^-2 at 80 °C and durability greater than 60 h.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124028"},"PeriodicalIF":8.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the link between antiscalant and fouling variation from reverse osmosis pilot study","authors":"Musabbir J. Talukder ,&nbsp;Ali S. Alshami ,&nbsp;Chris Buelke ,&nbsp;Nadhem Ismail ,&nbsp;Achouak Benarbia ,&nbsp;Arash Tayyebi ,&nbsp;Glavic Tikeri ,&nbsp;Al-Goraee Ashraf","doi":"10.1016/j.memsci.2025.124026","DOIUrl":"10.1016/j.memsci.2025.124026","url":null,"abstract":"<div><div>Access to pure water has shaped human civilization for centuries. Growing water scarcity has accelerated the development of sustainable purification technologies like Reverse Osmosis (RO). Despite significant advancements, membrane fouling remains a major bottleneck in RO systems. Scaling, among the different fouling types, became the main challenge in groundwater desalination, leading to the widespread use of antiscalants in RO operations. However, these antiscalants come with challenges, including incompatibility, concentrate disposal, and the risk of synergistic fouling. In response to environmental concerns, polymeric and biodegradable “Green” antiscalants have been studied for RO systems. However, a lack of pilot evaluations and a limited understanding of the antiscalant structure to foulant relationship have significantly hindered RO operational efficiency. This study evaluates three antiscalants in relation to pilot performance, RO membrane fouling, and cleaning strategy. Two commercial antiscalant blends (phosphonate salt and polymeric) and a novel \"Green” antiscalant,\" polyglycerol maleate, were evaluated over an eight-month pilot study, capturing seasonal performance variations. The study revealed distinct, manganese-to aluminum-dominated fouling, depending on the antiscalant interactions. Additionally, a biofouling quantification method and concentrate line analysis are introduced. The cleaning study showed that while some foulants resist simple cleaning techniques, cleaning at a lower foulant uptake can reduce long-term membrane deterioration highlighting the need for optimized cleaning with foulant types. Overall, from feed water analysis to cleaning, this study provides a complete operational picture of fouling and a framework for future antiscalant-RO system studies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124026"},"PeriodicalIF":8.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Roles of Fe3O4 and PANI coated membranes for fouling mitigation in membrane bioreactor: Long-term treatment performance and fouling mechanisms","authors":"Duyen Phuc-Hanh Tran ,&nbsp;Annisa Dwi Safiyanti ,&nbsp;Ya-Fen Wang ,&nbsp;Tomohiro Tobino ,&nbsp;Fumiyuki Nakajima ,&nbsp;Sheng-Jie You","doi":"10.1016/j.memsci.2025.124027","DOIUrl":"10.1016/j.memsci.2025.124027","url":null,"abstract":"<div><div>This study investigates the role of nanoparticles-coated membranes in membrane bioreactors (MBR) for wastewater treatment, focusing on treatment efficiency and fouling behaviors. In this study, PANI, Fe₃O₄ and Fe₃O₄@PANI were coated onto flat-sheet PVDF membranes via a simple dip-coating method. The modified membranes demonstrated COD removal rates of 93.8–95.9 % (PANI/PVDF), 93.1–95.1 % (Fe₃O₄/PVDF), and 88.9–95.2 % (Fe₃O₄@PANI/PVDF) were comparable to the pristine PVDF membrane (91.2–95.1 %), with similar ammonia and phosphorus removals over 250 days of operation. Fouling behavior analysis revealed that while the pristine PVDF membrane's fouling rate increased by 1.43 times as operated flux increased (1.60 kPa d⁻¹ at 15 LMH to 2.29 kPa d⁻¹ at 20 LMH), whereas the modified membranes exhibited only slight increases, less than 1.3 times. Surface roughness measurements showed that PANI/PVDF (R_a = 381.7 nm), Fe₃O₄/PVDF (R_a = 335 nm), and Fe₃O₄@PANI/PVDF (R_a = 377.1 nm) had reduced fouling susceptibility compared to pristine PVDF (R_a = 473.5 nm), indicating reduced extracellular polymeric substance (EPS) and soluble microbial product (SMP) deposition. These findings highlight the potential of nanoparticle-modified membranes to support elevated fluxes with minimal impact on treatment performance and fouling resistance, offering promising implications for prolonged and stable MBR operation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124027"},"PeriodicalIF":8.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crosslinked polyimide membranes for organic-solvent nanofiltration: Achieving high performance and chemical stability through bromine-based crosslinking","authors":"Giyoung Park ,&nbsp;Yujeong Hong ,&nbsp;Seung Eun Nam ,&nbsp;You-In Park ,&nbsp;Tae-Hyun Bae","doi":"10.1016/j.memsci.2025.124025","DOIUrl":"10.1016/j.memsci.2025.124025","url":null,"abstract":"<div><div>This study presents the development of an organic solvent nanofiltration (OSN) membrane with enhanced chemical and alkaline resistance, achieved through the crosslinking of brominated polyimide. By leveraging the high reactivity of bromine, two pyridyl crosslinking agents of varying lengths were effectively integrated into the membrane structure. The DP-PI membrane crosslinked with longer linker exhibited approximately double the permeance of the BP-PI membrane with shorter linker, attributed to structural differences resulting from the length of the crosslinking agents. Meanwhile, the BP-PI membrane demonstrated superior rejection due to its denser crosslinked structure. Under alkaline solvent conditions, both membranes showed partial swelling, leading to reduced rejection. Despite these changes, the membranes maintained stable performance over 80 h, highlighting their strong resistance to harsh alkaline environments. Our bromination-substitution crosslinking strategy effectively forms robust covalent bonds while preserving the integrity of the imide rings, significantly enhancing the membranes' durability. These findings position crosslinked polyimide membranes as highly promising candidates for OSN applications, combining excellent chemical stability, high selectivity, and robust performance.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124025"},"PeriodicalIF":8.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unifying nucleation and crystal growth mechanisms in membrane crystallisation","authors":"A. Mapetere ,&nbsp;G. Di Profio ,&nbsp;E. Curcio ,&nbsp;P. Campo ,&nbsp;E.J. McAdam","doi":"10.1016/j.memsci.2025.124021","DOIUrl":"10.1016/j.memsci.2025.124021","url":null,"abstract":"<div><div>While several mechanisms have been proposed to describe crystallisation processes in membrane distillation, it has not been possible to provide a definitive description since the nucleation kinetics are difficult to measure. This study therefore introduced non-invasive techniques to measure induction time within two discrete domains (the membrane surface and bulk solution) and was complemented by the introduction of a modified power law relation between supersaturation and induction time, that enables mass and heat transfer processes in the boundary layer to be directly related to classical nucleation theory (CNT). Temperature (<em>T</em>, 45–60 °C) and temperature difference (<em>ΔT</em>, 15–30 °C) were used to adjust boundary layer properties, which established a log-linear relation between the nucleation rate and the supersaturation level in the boundary layer at induction, which is characteristic of CNT. Crystal size distribution analysis demonstrated how nucleation rate and crystal growth rate could be adjusted using <em>ΔT</em> and <em>T</em> respectively. Consequently, <em>ΔT</em> and <em>T</em> can be used collectively to fix the supersaturation set point within the boundary layer to achieve the preferred crystal morphology. However, at higher supersaturation levels, scaling was observed. Discrimination of the primary nucleation mechanisms, using measured induction times, revealed scaling to be formed homogeneously, which indicates exposure of the pores to extremely high supersaturation levels. Morphological analysis of scaling indicated growth to be dominated by secondary nucleation mechanisms, that resulted in a habit that is distinctive from the crystal phase formed in the bulk solution. From this analysis, a critical supersaturation threshold was identified, below which kinetically controlled scaling can be ‘switched-off’, leaving crystals to form solely in the bulk solution comprising the preferred cubic morphology. This study serves to unify understanding on nucleation and growth mechanisms to enhance control over crystallisation in membrane systems.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124021"},"PeriodicalIF":8.4,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing the hydrogen productivity of an ammonia decomposition membrane reactor through offset positioning of the membrane and catalyst","authors":"Sean-Thomas B. Lundin,&nbsp;Ayumi Ikeda,&nbsp;Yasuhisa Hasegawa","doi":"10.1016/j.memsci.2025.124020","DOIUrl":"10.1016/j.memsci.2025.124020","url":null,"abstract":"<div><div>Optimization of the hydrogen production rate from an ammonia decomposition membrane reactor is performed for both volumetric and membrane area flux metrics at high total hydrogen recovery. The study utilizes an experimentally-verified model incorporating mass, momentum, and heat transfer within a 2D axisymmetric shell-and-tube reactor configuration, enabling the optimization of both operating conditions (temperature, pressure, and feed flow rate), and reactor geometry (radii and lengths). In addition, the relative position of the membrane and catalyst is examined using an offset variable function, <em>z</em>_shift, which allows for the catalyst bed to begin before the membrane – an aspect that has not been thoroughly explored in previous studies. Notably, one unexpected finding is that decreasing the ideal selectivity (H₂/N₂) from 5600 to 40 increases the hydrogen flux productivity by 10 % when the membrane position is optimized. In contrast, the hydrogen flux decreases by 15 % if the membrane position is fixed at the center of the reaction bed. Furthermore, at 80 % hydrogen recovery the optimization of total volumetric hydrogen production favors a centered membrane reactor, whereas optimization of hydrogen flux results in a completely separated reactor and separator. Although at 90 % hydrogen recovery the optimal position is shifted toward a membrane reactor, the results of this study suggest that a membrane reactor may not enhance hydrogen productivity from ammonia decomposition for all conditions. The results of this work should inspire new design considerations for the optimization of catalytic and packed-bed membrane reactors.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124020"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-efficiency water dissociation via natural polymer bipolar membranes with alginate/polydopamine-coated halloysite nanotubes and phosphotungstic acid","authors":"Xiaoqing Wang ,&nbsp;Jinyun Xu ,&nbsp;Shijie Shang ,&nbsp;Ming Li ,&nbsp;Sijia He ,&nbsp;Xiaoyan Wang ,&nbsp;Bingyu Yang ,&nbsp;Yirang He ,&nbsp;Xiaolu Ru ,&nbsp;Yanyan Ji ,&nbsp;Wenju Zhu ,&nbsp;Chunming Zheng ,&nbsp;Xiaohong Sun","doi":"10.1016/j.memsci.2025.124008","DOIUrl":"10.1016/j.memsci.2025.124008","url":null,"abstract":"<div><div>Bipolar membranes (BPMs), composed of anion exchange membrane (AEM) and cation exchange membrane (CEM), hold promise for energy and environmental applications due to their ability to dissociate water into H⁺ and OH⁻ under reverse bias. However, their practical voltage requirements often exceed theoretical potentials, necessitating efficiency optimization. This study introduces an innovative BPM design integrating alginate (SA)-based CEM with chitosan AEM, enhanced by polydopamine-coated halloysite nanotubes (DHNTs) loaded with phosphotungstic acid (HPW). The tubular structure of the DHNTs, modified via dopamine polymerization, improved mechanical stability and proton conductivity, while HPW coating (optimized at 10 wt %) facilitated acid-base interactions, reducing proton hopping distances. Comprehensive characterization (SEM, FTIR, XPS, TGA) confirmed successful HPW coating and structural modification. The optimized BPM exhibited enhanced tensile strength than unmodified BPM with proton conductivity of 36.56 mS/cm and low water dissociation overpotential of 1.188 V at 70 mA/cm². Electrodialysis tests revealed reduced interfacial resistance (IR drop) and increased stability over 48 h, attributed to HPW's catalytic role in accelerating ion transport and minimizing energy loss. The synergy between DHNTs and HPW significantly improved hydrophilicity, mechanical robustness, and energy efficiency, demonstrating the potential of this design for sustainable electrochemical systems. These findings provide critical insights into advanced BPM development for scalable energy and environmental technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124008"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance polyurea thin-film composite membranes: Tailored interfacial polymerization for efficient bioethanol dehydration","authors":"Micah Belle Marie Yap Ang ,&nbsp;Hsiao-Yu Chou ,&nbsp;Jeremiah C. Millare ,&nbsp;Shu-Hsien Huang","doi":"10.1016/j.memsci.2025.123985","DOIUrl":"10.1016/j.memsci.2025.123985","url":null,"abstract":"<div><div>In this study, we developed a series of advanced polyurea composite membranes using interfacial polymerization of various amine monomers (ethylenediamine (EDA), diethylenetriamine (DETA), and 2,2′,2″-nitrilotriethylamine (NTEA)) with diisocyanate monomers (1,6-diisocyanatohexane (HDI), m-xylylene diisocyanate (XDI), and 1,3-bis(isocyanatomethyl)cyclohexane (BIMC)) on modified polyacrylonitrile (mPAN) supports. These membranes were optimized and evaluated for pervaporation-based dehydration of a 90 wt% aqueous ethanol solution. Through a detailed investigation of the chemical structure via ATR-FTIR spectroscopy and morphological analysis using SEM, we identified key factors influencing membrane performance, including the hydrolysis time of the mPAN support, monomer structure, and polymerization conditions. The optimized TFC (DETA-XDI) membrane, synthesized with 1.0 wt% DETA and XDI solutions under controlled conditions, demonstrated an exceptional balance of permeation rate (462 g/m²h) and water selectivity (99.1 wt%), positioning it as a promising candidate for efficient bioethanol dehydration processes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 123985"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}