Advanced Membranes最新文献_第2页

Mechanically robust and chemically stable poly(aryl piperidinium)-SBS copolymer anion exchange membranes for 3000-h durable alkaline water electrolyzers 机械坚固和化学稳定的聚芳基胡椒啶-SBS共聚物阴离子交换膜，用于3000 h耐久碱性水电解槽

IF 9.5

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100172

Yixin Wang , Yingda Huang , Kang Geng , Bin Hu , Ruofei Gao , Erqiang Yang , Junfen Li , Jiandang Xue , Nanwen Li

{"title":"Mechanically robust and chemically stable poly(aryl piperidinium)-SBS copolymer anion exchange membranes for 3000-h durable alkaline water electrolyzers","authors":"Yixin Wang , Yingda Huang , Kang Geng , Bin Hu , Ruofei Gao , Erqiang Yang , Junfen Li , Jiandang Xue , Nanwen Li","doi":"10.1016/j.advmem.2025.100172","DOIUrl":"10.1016/j.advmem.2025.100172","url":null,"abstract":"<div><div>Anion exchange membrane (AEM) is a core component of potentially more efficient and cost-effective anion exchange membrane water electrolyzers (AEMWEs), which combine the advantages of traditional alkaline water electrolyzers (AWEs) and proton exchange membrane water electrolyzers (PEMWEs). Despite extensive research efforts in recent years, AEMs still face significant challenges, particularly insufficient alkaline stability and limited dimensional/mechanical stability. In this work, we enhanced the mechanical and alkaline stability of AEMs by incorporating the thermoplastic elastomer polystyrene-block-polybutadiene-block-polystyrene (SBS) into the poly (terphenyl piperidinium) (PTP) matrix. The optimal PTP-SBS-2.5 % membrane exhibits outstanding dimensional stability (9.4 % swelling at 20 °C), robust mechanical properties (tensile strength of 51.5 MPa and elongation of 63.1 % at break in wet state), low alkali absorption (0.875 %) and exceptional alkaline stability (92.4 % conductivity retention after 1500 h). Notably, the membrane demonstrates stable operation in AEMWE for over 3000 h with a low voltage decay rate of 41.1 μV h<sup>−1</sup>. These results highlight the significance of SBS in enhancing both the alkaline stability and mechanical performance of PTP-based AEMs.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100172"},"PeriodicalIF":9.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accurate separation and recovery of humic substances from landfill leachate concentrate by triethanolamine-based loose nanofiltration membranes 三乙醇胺基松散纳滤膜对垃圾渗滤液中腐殖质的精确分离和回收

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100137

Shihang Wei , Anqi Fu , Huaying Li , Wenyi Dong , Feiyun Sun , Hongjie Wang , Ding Yu Xing , Yuexing Wang

{"title":"Accurate separation and recovery of humic substances from landfill leachate concentrate by triethanolamine-based loose nanofiltration membranes","authors":"Shihang Wei , Anqi Fu , Huaying Li , Wenyi Dong , Feiyun Sun , Hongjie Wang , Ding Yu Xing , Yuexing Wang","doi":"10.1016/j.advmem.2025.100137","DOIUrl":"10.1016/j.advmem.2025.100137","url":null,"abstract":"<div><div>The treatment of landfill leachate concentrate poses significant environmental challenges, particularly in the separation and recovery of valuable humic substances from high salt concentrations. In this study, a novel loose nanofiltration (LNF) membrane was fabricated using 0.5 wt% triethanolamine (TEOA) and 0.1 wt% trimesoyl chloride (TMC) via interfacial polymerization for the accurate separation of humic substances from inorganic salts in landfill leachate concentrate. The optimized TEOA membrane exhibited high permeate flux about 67.6 L m<sup>−2</sup> h<sup>−1</sup>·bar<sup>−1</sup> and over 90 % transmission for ions, while achieving the rejection of humic substances above 92 %. The effects of operating conditions were investigated. Results showed that increasing inorganic salt concentration led to a notable decrease in inorganic salt rejection due to intensified concentration polarization and weakened electrostatic interactions. Rising humic substance concentration further intensified membrane fouling and concentration polarization, resulting in reduced flux and increased humic substance and inorganic salt rejections. Higher temperatures and alkaline pH increased flux and maintained stable rejections. In addition, a two-stage membrane filtration process was subsequently applied to actual landfill leachate concentrate samples. The humic substance concentration was enriched from 1.5 to 37.4 g L<sup>−1</sup>, achieving a recovery rate over 60 % at a concentration factor of 12.5. The recovered humic substances complied with the standards of water-soluble fertilizers containing humic-acids (NY1106-2010), highlighting the LNF membrane's potential in sustainable landfill leachate concentrate management and resource recovery.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100137"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mixed matrix membranes by incorporating methyl-functionalized covalent organic framework into PDMS for high flux ethanol/water separation 在PDMS中加入甲基功能化共价有机骨架的混合基质膜用于高通量乙醇/水分离

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100150

Zhibin Ma , Peitong Lian , Jie Li , Yanxiong Ren , Yonghui Shi , Hanze Ma , Yuhang Guo , Qianfeng Pan , Sheng Yuan , Yutong Wang , Heyang Liu , Lixuan Liu , Yuao Dong , Yanlei Su , Jing Zhao , Quanfu An , Guangwei He , Zhongyi Jiang

{"title":"Mixed matrix membranes by incorporating methyl-functionalized covalent organic framework into PDMS for high flux ethanol/water separation","authors":"Zhibin Ma , Peitong Lian , Jie Li , Yanxiong Ren , Yonghui Shi , Hanze Ma , Yuhang Guo , Qianfeng Pan , Sheng Yuan , Yutong Wang , Heyang Liu , Lixuan Liu , Yuao Dong , Yanlei Su , Jing Zhao , Quanfu An , Guangwei He , Zhongyi Jiang","doi":"10.1016/j.advmem.2025.100150","DOIUrl":"10.1016/j.advmem.2025.100150","url":null,"abstract":"<div><div>Polydimethylsiloxane (PDMS) membranes are commonly utilized for ethanol-water separation. However, the separation performance is insufficient owing to the inherent trade-off between permeability and selectivity. In this study, we reported the incorporation of methyl-functionalized covalent organic framework (COF, TpBD-CH<sub>3</sub>) into PDMS membranes to prepare mixed matrix membranes (MMMs), greatly increasing ethanol flux by 2.7 times. Under testing conditions of 60 °C with a feed solution containing 5 wt% ethanol in water, the permeation flux of the membrane incorporating 0.1 wt% TpBD-CH<sub>3</sub> significantly increased from 1738 g/(m<sup>2</sup>·h) to 4648 g/(m<sup>2</sup>·h) compared to the original PDMS membrane, while the separation factor improved from 7.32 to 8.40. The improved separation performance is attributed to that the incorporation of the COF enhances the hydrophobicity as well as the free volume cavities of the membranes as evidenced by the significantly increased gas permeability (CO<sub>2</sub> permeability reaches 26,720 Barrer). This study indicates the potential of COF in the development of PDMS-based MMMs for the separation of organic aqueous solutions or gas components.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100150"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Constructing heterogeneously wettable nanofiber membrane for highly efficient oil refining 用于高效炼油的非均质可湿纳米纤维膜的构建

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100135

Mi Zhou , Jiayu Tong , Fangru Zhou , Linlin Yan , Pengju Gao , Kai Wang , Xiquan Cheng

{"title":"Constructing heterogeneously wettable nanofiber membrane for highly efficient oil refining","authors":"Mi Zhou , Jiayu Tong , Fangru Zhou , Linlin Yan , Pengju Gao , Kai Wang , Xiquan Cheng","doi":"10.1016/j.advmem.2025.100135","DOIUrl":"10.1016/j.advmem.2025.100135","url":null,"abstract":"<div><div>Superhydrophobic membranes are highly energy-efficient for refining the oil from water-in-oil emulsions. Nevertheless, the poor solvent resistance and the ineffectiveness in separating nano-sized water droplets (below 100 nm) of the superhydrophobic membrane undermine their application in the water/oil separation process, especially for the separation of water-in-dichloromethane (CH<sub>2</sub>Cl<sub>2</sub>) and water-in-chloroform (CHCl<sub>3</sub>) emulsions. Herein, inspired by the desert beetle, we provided a facile approach to enhance the separation efficiency of cross-linked asymmetric nanofiber membrane (CNMs) towards water-in-oil emulsions by well-dispersed superabsorbent sodium polyacrylates (SAPs) particles between nanofibers through coaxial electrospinning technology. Interestingly, the hydrophilic SAPs surrounding by hydrophobic nanofibers form a heterogeneously wettable structure which is like to the structure of desert beetle backs. The unique structure could adjust the surface tension components of the membrane, leading to faster permeance of oil droplets. Moreover, as a superabsorbent resin, SAPs could absorb the nano-sized water droplets in the water-in-oil emulsion, thereby increasing the separation efficiency of the membrane. For water in CH<sub>2</sub>Cl<sub>2</sub> emulsions, the finely tailored nanofiber membrane completely removed water droplets larger than 63 nm, demonstrated permeance above 3.5 ×10<sup>4</sup> L∙m<sup>−2</sup>∙h<sup>−1</sup>∙bar<sup>−1</sup> with significant separation efficiency above 98.8%, and showed fantastic stability in organic solvent, exhibiting strong promise in oil refining.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100135"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights into the role of aromatic cationic surfactants in tailoring interfacial polymerization for high-performance reverse osmosis membranes 芳香族阳离子表面活性剂在高性能反渗透膜界面聚合中的作用

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100157

Jie Gao , Yongkai Xu , Nanxiang Wang , Dingxian Jia , Mingjie Wei , Shuang Hao , Yunxia Hu

{"title":"Insights into the role of aromatic cationic surfactants in tailoring interfacial polymerization for high-performance reverse osmosis membranes","authors":"Jie Gao , Yongkai Xu , Nanxiang Wang , Dingxian Jia , Mingjie Wei , Shuang Hao , Yunxia Hu","doi":"10.1016/j.advmem.2025.100157","DOIUrl":"10.1016/j.advmem.2025.100157","url":null,"abstract":"<div><div>Surfactant-mediated interfacial polymerization (IP) has been recognized as a promising strategy for accurately modulation of the structure and performance of polyamide (PA) reverse osmosis (RO) membranes. While aromatic cationic surfactants have demonstrated potential in regulating IP processes, the influence of their molecular structure on IP process and their incorporation integrated into the PA layer remain unexplored. This work systematically investigates two model surfactants—benzalkonium chloride (BAC, single benzene) versus benzethonium chloride (BEC, dual benzene)—as molecular regulators during PA layer formation. The results reveal that both aromatic cationic surfactants facilitate the diffusion of m-phenylenediamine (MPD) from the aqueous to the organic phase, enhancing PA cross-linking, while simultaneously embedding into the PA matrix to modulate surface properties. Notably, BEC, due to its distinctive dual-benzene-ring structure, exhibits a superior ability to accelerate MPD diffusion, triggering more pronounced Marangoni convection during IP, which contributes to a higher leaf-like structure area (0.017 μm<sup>2</sup>) of the resulting PA layer. Additionally, the strong π–π interaction between BEC and the PA network leads to a high embedding ratio of BEC within the membrane. Consequently, the BEC-regulated RO membranes demonstrate enhanced perm-selectivity, alongside improved antifouling and antibacterial properties. This study presents novel perspectives on the strategic design of cost-effective and high-performance fabrication methods for RO membranes, demonstrating substantial promise for industrial applications.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100157"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Charge-selective nanoconfined boron nitride membranes for ultrafast and enhanced water decontamination 电荷选择性纳米氮化硼膜用于超快速和强化水净化

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100159

Wenjing Geng , Chuchu Cheng , Baoxin Ge , Yaohui Xu , Yufei Liu , Xinxin Ye , Caijin Huang , Weiwei Lei , Yang Wang , Dengrong Sun , Cheng Chen

{"title":"Charge-selective nanoconfined boron nitride membranes for ultrafast and enhanced water decontamination","authors":"Wenjing Geng , Chuchu Cheng , Baoxin Ge , Yaohui Xu , Yufei Liu , Xinxin Ye , Caijin Huang , Weiwei Lei , Yang Wang , Dengrong Sun , Cheng Chen","doi":"10.1016/j.advmem.2025.100159","DOIUrl":"10.1016/j.advmem.2025.100159","url":null,"abstract":"<div><div>Membrane separation techniques could address global water scarcity and ensure water safety. However, the unavoidable concentration polarization effect remains a formidable challenge. Here, we present a nanoconfined catalysis boron nitride membrane confining active nanoparticles to elaborately regulate molecular separation and pollutant degradation. For positively charged pollutant, the nanoconfined catalysis membrane demonstrates a water permeance reaching high up to 1549 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>, which also substantially increases the removal efficiency of organic pollutants from 71.9 % to above 99.9 %. For negatively charged pollutant, the membrane achieves nearly 100 % reduction to p-aminophenol within 4.06 ms retention time across 100 operational cycles. Density functional theory calculation results further confirm the charge selection of nanoconfined catalysis boron nitride membranes for enhanced water decontamination. The superior performance of nanoconfined catalysis membranes arises from synergistically integrating stable 2D nanochannels, uniform catalytic layers, and controlled charge transfer, effectively mitigating concentration polarization in wastewater treatment.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100159"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchical structure control for ultra-high-flux helium separation membranes based on fluorinated polyimide materials 基于氟化聚酰亚胺材料的超高通量氦分离膜的分级结构控制

IF 9.5

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100166

Lixin Xing , Mengshi Wei , Jiaming Wang , Shiqi Huang , Wenji Zheng , Xiaobin Jiang , Shouhai Zhang , Gaohong He , Xuehua Ruan

{"title":"Hierarchical structure control for ultra-high-flux helium separation membranes based on fluorinated polyimide materials","authors":"Lixin Xing , Mengshi Wei , Jiaming Wang , Shiqi Huang , Wenji Zheng , Xiaobin Jiang , Shouhai Zhang , Gaohong He , Xuehua Ruan","doi":"10.1016/j.advmem.2025.100166","DOIUrl":"10.1016/j.advmem.2025.100166","url":null,"abstract":"<div><div>Polyimide materials with multiple trifluoromethyl groups in repeating units, e.g., 6FDA-TFMB, have excellent intrinsic performance for membrane-based helium enrichment. Nevertheless, these fluorinated groups would seriously weaken cohesive energy density and then decelerate molecular chain aggregation in supersaturated solution. For asymmetric membrane fabrication using dry-wet phase inversion technology, this variation is negative to form dense and selective skin layer during solvent evaporation. In this research, EtOH, because it possesses low boiling point and little effect on solution stability, is utilized to enhance surface evaporation and accelerate polymer inspissation locally to construct defect-free skin layer. Meanwhile, formamide, because it could simultaneously motivate gelation and increase viscosity for polymer solution, is used to speed solidification during nonsolvent induced phase inversion, so that the transitional layer next to the surface could be formed instantaneously with artful sponge structure to consolidate and protect the nascent dense layer. The membrane casting solution is optimized with 22.0 wt% 6FDA-TFMB, 30.0 wt% EtOH, 3.0 wt% formamide, 31.5 wt% NMP, and 13.5 wt% THF, approximately. The defect-free dense layer could be thinner than 150 nm through this favorable formula. Besides, helium permeance is tested to be 760 GPU, the selectivity between helium and methane is tested to be 157, and the allowable operation pressure is higher than 4.0 MPaG, respectively. After adequate aging treatment, helium permeance is stabilized at 398 GPU, and the selectivity is increased to 239.5. On the whole, this work supplied an effective strategy to overcome the weakness in low cohesive energy density and construct highly fluorinated polyimide materials into excellent membranes with ultrathin and defect-free selective layer.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100166"},"PeriodicalIF":9.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vapor permeation (VP) of water (H2O)/ acetic acid (AcOH) mixtures via bis(triethoxysily)ethane (BTESE) membranes 通过双（三乙氧基硅基）乙烷（BTESE）膜对水（H2O）/醋酸（AcOH）混合物进行蒸汽渗透（VP）

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100140

Suhaina Mohd Ibrahim , Kennedy Mawunya Hayibor , Xin Yu , Shigeru Miyata , Kengo Mishina , Feridoun Salak , Toshinori Tsuru , Ken-ichi Sawamura

引用次数: 0

Integration of oxidation processes and ceramic membrane filtration for advanced water treatment: A review of foulant-membrane interactions 氧化过程和陶瓷膜过滤在深度水处理中的集成：污染物-膜相互作用的综述

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100138

Bin Lin , Xinyue Deng , Jiahao Chen , Ze-Xian Low , Zhaoxiang Zhong , Weihong Xing

{"title":"Integration of oxidation processes and ceramic membrane filtration for advanced water treatment: A review of foulant-membrane interactions","authors":"Bin Lin , Xinyue Deng , Jiahao Chen , Ze-Xian Low , Zhaoxiang Zhong , Weihong Xing","doi":"10.1016/j.advmem.2025.100138","DOIUrl":"10.1016/j.advmem.2025.100138","url":null,"abstract":"<div><div>Membrane filtration technology emerges as a robust and efficient solution in the global effort to alleviate water scarcity, offering a reliable means to deliver clean and safe drinking water. However, its effectiveness is compromised by severe membrane fouling, particularly under conditions of high organic load and prolonged operation. Integrating oxidation processes with ceramic membrane filtration offers promising solutions to these challenges, leveraging the excellent resistance of ceramic membranes to aggressive oxidation environments. Despite this, the complex interactions between ceramic membranes and organic foulants under various oxidation processes remain inadequately understood, yet they are pivotal in fouling dynamics. This review examines the integration of oxidation processes with ceramic membrane filtration systems. We focus on the fundamental mechanisms of molecular-scale interactions between ceramic membranes and organic foulants, which are crucial for developing effective strategies to mitigate fouling. Practical applications of the integrated processes in advanced water treatment are also discussed. We first examine the mechanisms underlying the unique surface chemistry of ceramic membranes and their interactions with organic foulants. We then explore the influence of oxidation processes on these interactions and fouling behaviour. Finally, we discuss the challenges and future prospects for expanding this integrated technology to broader applications in water decontamination and reuse.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100138"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of high-performance pervaporation membranes for ethanol dehydration using a layer-by-layer self-assembly method 采用逐层自组装方法制备乙醇脱水用高性能渗透蒸发膜

Advanced Membranes Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100132

Zhenhan Sun , Guoke Zhao , Gongqing Tang , Zhihu Zhao , Pei Li

{"title":"Preparation of high-performance pervaporation membranes for ethanol dehydration using a layer-by-layer self-assembly method","authors":"Zhenhan Sun , Guoke Zhao , Gongqing Tang , Zhihu Zhao , Pei Li","doi":"10.1016/j.advmem.2025.100132","DOIUrl":"10.1016/j.advmem.2025.100132","url":null,"abstract":"<div><div>To achieve fuel-grade purity (≥99.5 wt%), raw bioethanol needs to be purified. Adopting pervaporation membrane for bioethanol enrichment can greatly reduce the energy consumption compared with distillation. However, this requires the membrane having a high flux and high water to ethanol selectivity as well as good stability. In this study, a layer-by-layer self-assembled composite pervaporation membrane was prepared by alternately dip-coating polyallylamine hydrochloride (PAH) and sodium alginate (SA) solutions on the surface of a polyacrylonitrile (PAN) microfiltration membrane. The membrane flux and separation performance under different feed conditions are measured independently, and the results are mutually independent. These tests are conducted as short-term experiments to evaluate the membrane's separation performance under specific feed conditions. By optimizing the concentrations of PAH and SA, best separation performance of the composite membranes was obtained with a flux of 2.02 kg m<sup>−2</sup> h<sup>−1</sup> and a water to ethanol separation factor of 10993 using a 90 % ethanol water solution as feed at 70 °C. The composite membrane showed good stability in water. When keeping all other conditions unchanged, the feed ethanol concentration is adjusted to 50 wt%, the membrane flux increase to 12.61 kg m⁻<sup>2</sup> h⁻<sup>1</sup>, and the water concentration in the permeate reach 99.7743 wt%.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100132"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0