Journal of Membrane Science最新文献_第4页

Ultra-high nitrate-selective metal-polymer membranes based on cardo polybenzimidazole for electrodialysis 用于电渗析的基于卡尔多聚苯并咪唑的超高硝酸盐选择性金属聚合物膜

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-17 DOI: 10.1016/j.memsci.2024.123518

A.A. Lysova , A.D. Manin , D.V. Golubenko , I.I. Ponomarev , V.A. Altynov , N. Hilal , A.B. Yaroslavtsev

{"title":"Ultra-high nitrate-selective metal-polymer membranes based on cardo polybenzimidazole for electrodialysis","authors":"A.A. Lysova , A.D. Manin , D.V. Golubenko , I.I. Ponomarev , V.A. Altynov , N. Hilal , A.B. Yaroslavtsev","doi":"10.1016/j.memsci.2024.123518","DOIUrl":"10.1016/j.memsci.2024.123518","url":null,"abstract":"<div><div>Ion exchange membranes with high monovalent ion selectivity are essential for extracting valuable components from natural and waste waters. One of the approaches to their fabrication is the creation of nanostructured materials with ion-conducting channels. In this study, materials based on cardo polybenzimidazole (PBI–O-PhT) containing Zn<sup>2+</sup>, Cr<sup>3+</sup> and Cu<sup>2+</sup> ions were obtained and used for the first time for electrodialysis separation. The formation of crosslinked structure due to metal-benzimidazole coordination bonds was demonstrated. The obtained metal-polymer membranes have ionic conductivity comparable to commercial ones, reaching 0.32 mS cm<sup>−1</sup>, and high values of nitrate ion transport numbers (99.2 %). It is shown that the obtained membranes achieve incredibly high values of selectivity coefficients for anion separation. The highest and most stable values were obtained for the copper-containing membrane PBI/Cu-50, which are P(NO<sub>3</sub>/SO<sub>4</sub>) = 729, P(Cl/SO<sub>4</sub>) = 109 and P(NO<sub>3</sub>/Cl) = 6.66.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123518"},"PeriodicalIF":8.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720901","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}

引用次数: 0

PEEK-PANI bi-functional oil-water separation membrane based on structural switchable wettability 基于结构可切换润湿性的 PEEK-PANI 双功能油水分离膜

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-17 DOI: 10.1016/j.memsci.2024.123501

Boqian Zhao, Ziyu Lin, Ruiyin Sun, Guannan Chen, Zhiwei Zhao, Wenying Li, Liyuan Chen, Yirong Sun, Jiadi Liu, Jinhui Pang, Zhenhua Jiang

{"title":"PEEK-PANI bi-functional oil-water separation membrane based on structural switchable wettability","authors":"Boqian Zhao, Ziyu Lin, Ruiyin Sun, Guannan Chen, Zhiwei Zhao, Wenying Li, Liyuan Chen, Yirong Sun, Jiadi Liu, Jinhui Pang, Zhenhua Jiang","doi":"10.1016/j.memsci.2024.123501","DOIUrl":"10.1016/j.memsci.2024.123501","url":null,"abstract":"<div><div>Prewetting-induced switchable wettability materials demonstrate considerable potential for a diverse range of applications in comparison to traditional oil-water separation membranes including conventional special wetting materials, due to the distinctive advantages they offer. The current prewetting-induced switchable wettability materials are still constrained by the preparation strategy, separation performance and stability in practical application environment. This study presents a method for the preparation of PEEK/PANI bi-functional oil-water separation membranes by electrospinning and in-situ polyaniline growth. The controllable in-situ growth of PANI particles on PEEK fibers resulted in the formation of surface nano-micro structures, which enhanced the switchable underwater oleophobicity and underoil hydrophobicity of the membrane. The switching of wettability and the separation process is induced by prewetting in water or oil. The membranes display high permeability (maximum water flux of up to 8910 L⋅m<sup>−2</sup>⋅h<sup>−1</sup>) and separation efficiency (greater than 99.9 %) in gravity-driven oil-water mixtures/emulsion separation. PEEK-PANI composite fiber membranes demonstrate consistent separation performance in a range of corrosive or organic solvent environments due to the robust nature of the materials and the structural wettability This work presents a novel approach for the introduction of surface nano-micro structures and switchable structural wettability, as well as the production of high-performance multifunctional oil-water separation materials.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123501"},"PeriodicalIF":8.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720776","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}

引用次数: 0

Glycerol-assisted uniform dispersion of TpHz nanoparticles in the poly(vinyl alcohol) membrane matrix to construct water permeation channels 甘油辅助 TpHz 纳米粒子在聚乙烯醇膜基质中均匀分散以构建透水通道

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-17 DOI: 10.1016/j.memsci.2024.123515

Qiao Liu , Xiaotian Xia , Nong Xu , Qing Wang , Long Fan , Yinhua Wan

{"title":"Glycerol-assisted uniform dispersion of TpHz nanoparticles in the poly(vinyl alcohol) membrane matrix to construct water permeation channels","authors":"Qiao Liu , Xiaotian Xia , Nong Xu , Qing Wang , Long Fan , Yinhua Wan","doi":"10.1016/j.memsci.2024.123515","DOIUrl":"10.1016/j.memsci.2024.123515","url":null,"abstract":"<div><div>Achieving uniform dispersion of nanoparticles within the polymer membrane matrix while simultaneously constructing continuous selective permeation channels has always been key to preparing high-performance mixed matrix membranes. In this study, we employ glycerol (Gol) molecules as “bridges” to harness the hydrogen bonding interactions between Gol, TpHz, and poly(vinyl alcohol) (PVA) molecules. This approach facilitates the nanoscale dispersion of TpHz nanoparticles within the PVA membrane, establishing continuous channels that selectively permit the permeation of water molecules. By incorporating just 0.3 wt % of TpHz nanoparticles, the resultant PVA/Gol/TpHz membrane demonstrates a mechanism that favors the selective adsorption, dissolution, and rapid diffusion of water molecules from the feed, thereby reducing the activation energy required for their permeation through the membrane. The prepared PVA/Gol/TpHz membrane with pure water contact angle of only 19.6° has total flux and separation factor of 134 L m<sup>−2</sup> h<sup>−1</sup> and 705, which were 3.4 and 3.5 times higher than those of the pure PVA membrane, respectively. It broke the “trade-off” effect of traditional PVA membrane. Moreover, the tensile strength and thermal decomposition temperature of the PVA/Gol/TpHz membrane were increased from 130.31 MPa to 120.90 °C to 442.05 MPa and 246.8 °C, respectively. The membrane structure and separation performances remained stable during the 80-h pervaporation test, which suggests potential for industrial applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123515"},"PeriodicalIF":8.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720784","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}

引用次数: 0

Anhydrous interfacial polymerization induced by isopropanol to construct high permeance polyamide membranes for organic solvent nanofiltration 用异丙醇诱导无水界面聚合，构建用于有机溶剂纳滤器的高渗透性聚酰胺膜

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-17 DOI: 10.1016/j.memsci.2024.123516

Xin Tong , Ning Chen , Yushu Sui , Yixuan Liu , Dongru Chen , Qiuyu Miao , Jinhui Pang , Zhonghua Tang , Xiaorui Guo , Ning Cao

{"title":"Anhydrous interfacial polymerization induced by isopropanol to construct high permeance polyamide membranes for organic solvent nanofiltration","authors":"Xin Tong , Ning Chen , Yushu Sui , Yixuan Liu , Dongru Chen , Qiuyu Miao , Jinhui Pang , Zhonghua Tang , Xiaorui Guo , Ning Cao","doi":"10.1016/j.memsci.2024.123516","DOIUrl":"10.1016/j.memsci.2024.123516","url":null,"abstract":"<div><div>Highly permeable polyamide (PA) membranes with precise molecular sieving capabilities are crucial for energy-efficient chemical separations. There is a critical need to design solvent-stabilized membranes with enhanced permeance to improve separation efficiency. In this work, we propose a novel anhydrous interfacial polymerization (IP) method, where flexible polyethyleneimine (PEI) and rigid p-phenylenediamine (PPD) are uniquely dissolved in isopropanol (IPA) and subsequently crosslinked with trimethyl chloride (TMC) in situ to fabricate high-performance PA membranes. Notably, the use of IPA as a solvent represents a significant advancement in membrane fabrication. This approach resulted in PA membranes with a relatively loose selective layer compared to traditional PA membranes, allowing for exceptionally high solvent permeance while maintaining strong rejection performance in organic solvent nanofiltration (OSN). The obtained PEI + PPD/TMC PA membranes demonstrated outstanding ethanol (EtOH) permeance of 46.44 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup> in the organic solvent system, along with good rejection for small organic molecules, such as 93.84% for Eriochrome Black T (EBT, 461.38 Da). In addition, the performance of the PEI + PPD/TMC PA membranes remained at a high level even during 510 min of continuous cross-flow filtration, under high pressure (5 bar) testing, and after 6 cycles of separation, which demonstrated their good stability in long-term service. This work establishes a robust foundation for employing anhydrous IP reactions and innovative solvent systems, such as IPA, to develop high-permeance PA membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123516"},"PeriodicalIF":8.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720907","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}

引用次数: 0

Surface oxidation via water plasma for increased H2 permselectivity of Allylhydridopolycarbosilane (AHPCS)-derived SiC membranes 通过水等离子体进行表面氧化，提高烯丙基hydridopolycarbosilane (AHPCS) 衍生碳化硅膜的 H2 许可选择性

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-17 DOI: 10.1016/j.memsci.2024.123521

Gusni Sushanti , Shun Aoyama , Norihiro Moriyama , Hiroki Nagasawa , Masakoto Kanezashi , Toshinori Tsuru

{"title":"Surface oxidation via water plasma for increased H2 permselectivity of Allylhydridopolycarbosilane (AHPCS)-derived SiC membranes","authors":"Gusni Sushanti , Shun Aoyama , Norihiro Moriyama , Hiroki Nagasawa , Masakoto Kanezashi , Toshinori Tsuru","doi":"10.1016/j.memsci.2024.123521","DOIUrl":"10.1016/j.memsci.2024.123521","url":null,"abstract":"<div><div>The objective of this research was to enhance the H<sub>2</sub> permselectivity of Allylhydridopolycarbosilane (AHPCS)-derived membranes through water plasma (WP) modification and subsequent pyrolysis. The WP modification, applied for 10 s, significantly improved the surface properties of the membranes to form ≡ Si–H, leading to enhanced H<sub>2</sub> permselectivity. Pyrolysis at 500−700 °C further transformed the membranes into a dense ceramic structure while maintaining high permeability for He and H<sub>2</sub> (0.3–1 × 10<sup>−6</sup> mol/(m<sup>2</sup> s Pa)), achieved a significant increase in the permeance ratios of conventional SiC membrane from approximately 20 to 300 for H<sub>2</sub>/N<sub>2</sub> and from 80 to 500 for He/N<sub>2</sub>. Structural evolution analyses via Water contact angle (WCA) and X-Ray photoelectron spectroscopy (XPS) confirmed significant surface oxidation of ≡ Si–H groups to silanol ones via WP and condensation via pyrolysis. These modifications resulted in a structure ≡ of Si–O–Si ≡ on the surface, but SiC in bulk had markedly higher selectivity and permeance than AHPCS membranes pristine and modified with other methods. This design offers excellent thermal and chemical resistance, particularly for small to mid-sized molecules like He and H<sub>2</sub>.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123521"},"PeriodicalIF":8.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720459","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}

引用次数: 0

The importance of ionic hydration in the transport of monovalent anions through nanofiltration membranes 离子水合在单价阴离子通过纳滤膜传输过程中的重要性

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-16 DOI: 10.1016/j.memsci.2024.123513

Idit Shefer, Liat Birnhack, Razi Epsztein

{"title":"The importance of ionic hydration in the transport of monovalent anions through nanofiltration membranes","authors":"Idit Shefer, Liat Birnhack, Razi Epsztein","doi":"10.1016/j.memsci.2024.123513","DOIUrl":"10.1016/j.memsci.2024.123513","url":null,"abstract":"<div><div>To improve the solute-specific selectivity of nanofiltration (NF) membranes, a fundamental understanding of the transport mechanisms in these membranes is required. In this study, we explored the selectivity trends of common anionic pollutants (i.e., nitrate and perchlorate) compared to the common chloride anion and examined the underlying transport mechanisms for these trends in loose polyamide NF membranes. Permeation experiments show that nitrate and perchlorate, despite being polyatomic and larger, permeate the membrane faster than the monoatomic, spherical chloride, suggesting that other mechanisms beyond size and charge exclusion govern the separation. Significantly higher enthalpic barriers measured for the transport of chloride compared to nitrate and perchlorate elucidated the important role of ion dehydration in the selectivity observed. To further support the influence of dehydration, we systematically altered the ions’ hydration by introducing various organic aliphatic alcohols of different hydrophobicity into the feed solution. The inclusion of aliphatic alcohols intensified the chaotropic characteristics of nitrate and perchlorate, augmenting their capacity to dehydrate, as reflected by their enhanced permeation and reduced enthalpic barrier in the presence of alcohols. We also demonstrated that this effect is boosted when a strong kosmotropic anion like sulfate is added to the system due to its counter effect on water structuring. We conclude with proposing mechanisms for the anion behavior in water-alcohol solutions that highlight the critical importance of ionic hydration in transmembrane permeation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123513"},"PeriodicalIF":8.4,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720785","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}

引用次数: 0

Toward quantitative evaluations of interfacial compatibility of ZIF-8 based mixed-matrix membranes via molecular simulations 通过分子模拟定量评估基于 ZIF-8 的混合基质膜的界面相容性

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-16 DOI: 10.1016/j.memsci.2024.123503

Guangyao Fan , Dongyang Li , Jing Wang , Meixia Shan , Guanying Dong , Xiaoquan Feng , Yatao Zhang

{"title":"Toward quantitative evaluations of interfacial compatibility of ZIF-8 based mixed-matrix membranes via molecular simulations","authors":"Guangyao Fan , Dongyang Li , Jing Wang , Meixia Shan , Guanying Dong , Xiaoquan Feng , Yatao Zhang","doi":"10.1016/j.memsci.2024.123503","DOIUrl":"10.1016/j.memsci.2024.123503","url":null,"abstract":"<div><div>ZIF-8-based Mixed-Matrix Membranes (MMMs) have demonstrated promising potential for propylene/propane separation, but improvements in gas separation efficiency are hindered by the interfacial compatibility between ZIF-8 and the polymer matrix. In this study, we employed molecular modeling and simulations to construct and quantitatively compare the microstructural and energetic properties of three MMMs, including ZIF-8 with PIM-1, 6FDA-durene, and PIM-6FDA-OH. We assessed the applicability of the General Amber Force Field for modeling these MMMs and confirmed its validity. A protocol was developed to accurately define the interface region of the MMMs, ensuring reliability in calculating interfacial properties. Using this defined interface, we evaluated and compared the atomic concentration profile, interfacial length, polymer porosity, pore size distribution, and interfacial binding energy. Our findings indicate an order of interfacial compatibility as follows: ZIF-8/PIM-6FDA-OH > ZIF-8/6FDA-durene > ZIF-8/PIM-1, aligning well with literature reports. Further molecular-level analysis through radial distribution functions and dihedral angle distributions supported this compatibility order. Additionally, we explored the impact of modeling size on characterizing interfacial properties, affirming that our model effectively balances simulation accuracy and efficiency. Propylene/propane adsorption properties were also computed, revealing potential mechanisms for enhanced gas solubility in different MMMs. Most importantly, this comprehensive investigation led to the development and validation of an interface screening system, providing a reliable and efficient method for designing or screening polymer-filler pairs to improve gas separation performance.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123503"},"PeriodicalIF":8.4,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720781","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}

引用次数: 0

Enhanced antifouling PSE hollow fiber membrane via zwitterionic copolymer segregation 通过齐聚物共聚物偏析增强 PSE 中空纤维膜的防污能力

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-16 DOI: 10.1016/j.memsci.2024.123512

Zhi-Peng Wang, Ziyang Cheng, Qiaohong Liu, Chunguang Hou, Quan-Fu An

{"title":"Enhanced antifouling PSE hollow fiber membrane via zwitterionic copolymer segregation","authors":"Zhi-Peng Wang, Ziyang Cheng, Qiaohong Liu, Chunguang Hou, Quan-Fu An","doi":"10.1016/j.memsci.2024.123512","DOIUrl":"10.1016/j.memsci.2024.123512","url":null,"abstract":"<div><div>Blending hydrophilic additives is an effective method to improve the surface hydrophilcility and antifouling property of ultrafiltration membranes. In this study, we prepared a series of polysulfate (PSE) hollow fiber membranes (HFMs) containing a zwitterion-based copolymer, poly(4-vinylpyridine-co-methylacryloxyethyl phosphocholine), with varying monomer ratios and blending quantities. The relationship between cast solution properties and phase separation behavior was investigated, as well as the impacts of copolymer composition and amount on the separation performances and antifouling abilities of the membranes. A higher hydrophilic monomer ratio and more copolymer addition of zwitterionic copolymer would facilitate surface segregation, increasing the hydrophilicity of membrane surface and generating a dense hydration layer. This layer can resist macromolecule contaminants and promote water molecular transport. Furthermore, a more compacted skin layer improves separation ability. The optimized PSE HFMs had water fluxes around 140 L m<sup>−2</sup> h<sup>−1</sup>, BSA rejections over 97 %, and flux recovery rates over 92 % during operation. Moreover, the membrane demonstrated ultra-low flux-sacrifice when applied to protein solutions while maintaining a high rejection rate, which indicates the distinctive and strong competitiveness of PSE/P(4VP-co-MPC) HFMs.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123512"},"PeriodicalIF":8.4,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720783","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}

引用次数: 0

Highly permeable acid-resistant polyamine hollow fiber nanofiltration membrane fabricated by secondary interfacial polymerization reactions 通过二次界面聚合反应制造的高渗透性耐酸聚胺中空纤维纳滤膜

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-15 DOI: 10.1016/j.memsci.2024.123502

Yurong Yin , Can Li , Daniel Yee Fan Ng , Rong Wang

{"title":"Highly permeable acid-resistant polyamine hollow fiber nanofiltration membrane fabricated by secondary interfacial polymerization reactions","authors":"Yurong Yin , Can Li , Daniel Yee Fan Ng , Rong Wang","doi":"10.1016/j.memsci.2024.123502","DOIUrl":"10.1016/j.memsci.2024.123502","url":null,"abstract":"<div><div>The development of acid-resistant nanofiltration (NF) membranes has drawn much attention due to their application in industrial wastewater treatment. In this work, we utilized polyethyleneimine (PEI) and cyanuric chloride (CC) to conduct the first interfacial polymerization (IP) reaction on the polyethersulfone (PES) hollow fiber substrate, followed by the secondary IP process using tris(2-aminoethyl) amine (TAEA) to react with the residual chloride groups after the first IP to improve the positive charge intensity of the membrane surface. Compared to the pristine membrane formed after the first IP, the TAEA-optimized membrane exhibited a high pure water permeability (PWP) of 25.2 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup> and nearly 90 % rejection to MgCl<sub>2</sub> at 2 bar operating pressure. Meanwhile, when treating synthetic electroplating rinse water, the membrane was still able to achieve 85 % rejections to Cu<sup>2+</sup> and Ni<sup>2+</sup> ions during a 7-day operation test under pH of 1 condition. The results demonstrate the good potential of the membrane for heavy metal ions removal in industrial acidic wastewater.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123502"},"PeriodicalIF":8.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720991","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}

引用次数: 0

Gel composite membrane with tannic acid/ferric ion separation layer for organic solvent nanofiltration 用于有机溶剂纳滤的带有单宁酸/铁离子分离层的凝胶复合膜

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2024-11-15 DOI: 10.1016/j.memsci.2024.123492

Zhiyun Kong , Bing Zhang , Xiaolei Wang , Zifei Qi , Chan Huang , Haike Li , Huan Zhang , Huicai Wang

{"title":"Gel composite membrane with tannic acid/ferric ion separation layer for organic solvent nanofiltration","authors":"Zhiyun Kong , Bing Zhang , Xiaolei Wang , Zifei Qi , Chan Huang , Haike Li , Huan Zhang , Huicai Wang","doi":"10.1016/j.memsci.2024.123492","DOIUrl":"10.1016/j.memsci.2024.123492","url":null,"abstract":"<div><div>To address the permeability-selectivity trade-off of organic solvent nanofiltration (OSN) membranes, a gel composite membrane was fabricated by the complexation of tannic acid (TA) and ferric ions (Fe<sup>3+</sup>) on the surface of self-supported calcium alginate (CaAlg) gel membrane. The three-dimensional network of the CaAlg substrate serves as a channel for rapid solvent transport, while the dense TA/Fe<sup>3+</sup> metal-phenol network achieves solute rejection. The chemical structure, morphology, pore size, zeta potential and mechanical properties of the CaAlg substrate and the gel composite membrane were characterized. Dye/solvent separation and solvent resistance were investigated. The results indicate that the TA/Fe<sup>3+</sup> separation layer reduces the pore size, increases the negative charge and improves the mechanical properties of the gel membrane. By optimizing the TA/Fe<sup>3+</sup> complexation conditions, the gel composite membrane has an ethanol permeance of 19.5 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup> and a congo red (CR) rejection of 99.0 %, and the separation performance is almost unchanged during 60 d of immersion in N, <em>N</em>-dimethlformamide (DMF). In addition, the composite membrane could separate CR from DMF and acetone, as well as cationic and anionic dyes in ethanol. This work provides a simple and environmentally friendly method to prepare an OSN membrane with high solvent permeance and harsh solvent stability, which is promising for solvent purification and recovery.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123492"},"PeriodicalIF":8.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720911","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}

引用次数: 0