Advanced Membranes最新文献

英文中文

Membranes with hollow bowl-shaped window for CO2 removal from natural gas 具有中空碗状窗口的膜，用于从天然气中去除二氧化碳

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100129

Weiwang Lim , Wen He , Ji Ma , Shabi Ul Hassan , Jingcheng Du , Qian Sun , Dong Cao , Jian Guan , Hongjun Zhang , Jiangtao Liu

Mixed matrix membranes (MMMs) are crucial for CO₂ separation and offer a potential solution to overcome conventional gas separation. Nevertheless, MMMs face challenges due to interfacial defects in membranes, which results in poor gas separation performance. In this study, γ-cyclodextrin (γ-CD) based MMMs were synthesized via a simple solution casting method. γ-CD could be molecularly dispersed in Matrimid matrix up to 3 wt% loading without defects at the interfaces in membranes. ATR-FTIR results showed that γ-CD based MMMs have significant peak with loading increases. Leveraging the high CO₂ solubility and high porosity of γ-CD, Matrimid/γ-CD based membranes exhibit improved CO₂/CH₄ selectivity. Especially, the CO₂ permeability of Matrimid-3%-CD membrane increased by 40 % (from 13.35 to 18.71 Barrer) and CO₂/CH₄ increased by 99 % (from 36.08 to 71.96), respectively compared to pristine Matrimid membrane. This demonstrates that the incorporation of γ-CD in Matrimid membrane significantly improves both permeability and selectivity. The Matrimid-γ-CD membrane also demonstrated superior long-term operation stability after aging 593 days. Thus, this study lays the foundation for the development of γ-CD-based membranes with high CO₂/CH₄ selectivity, providing potential pathways for CO₂ separation processes in CO₂/CH₄ separation.

混合基质膜（MMMs）对于CO2分离至关重要，并提供了一种克服传统气体分离的潜在解决方案。然而，由于膜的界面缺陷，MMMs面临着挑战，导致气体分离性能差。本研究采用简单的溶液浇铸法制备了γ-环糊精（γ-CD）基MMMs。γ-CD可以在3 wt%的负载下分子分散在基质中，而在膜的界面处没有缺陷。ATR-FTIR结果表明，γ-CD基MMMs随载荷的增加有明显的峰值。利用γ-CD的高CO2溶解度和高孔隙率，Matrimid/γ-CD基膜具有更好的CO2/CH4选择性。其中，与原始Matrimid膜相比，Matrimid-3%- cd膜的CO2渗透率提高了40%（从13.35 Barrer提高到18.71 Barrer）， CO2/CH4渗透率提高了99%（从36.08提高到71.96）。这表明γ-CD在基质膜中的掺入显著提高了膜的渗透性和选择性。经过593天的老化，Matrimid-γ-CD膜也表现出良好的长期运行稳定性。因此，本研究为开发具有高CO2/CH4选择性的γ- cd基膜奠定了基础，为CO2/CH4分离过程中的CO2分离过程提供了潜在的途径。

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引用次数: 0

Membrane technology for sterilization and virus elimination of biopharmaceuticals: Fouling matters 生物制药灭菌和病毒消除的膜技术：污染问题

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100143

Shilong Qi , Rong Fan , Xinwei Su , Hao Zhang , Yingzi Cui , Benkun Qi , Xiangrong Chen , Yinhua Wan , Jianquan Luo

Membrane-based sterilization and virus removal have become an essential approach for Quality Control and Quality Assurance in biopharmaceutical manufacturing, offering significant advantages over traditional thermal and chemical methods. This green technology preserves drug integrity without chemical additives. However, the complex interactions between biomolecules and membrane surfaces often lead to membrane fouling and potential microbial breakthrough. This review first comprehensively interprets the physiochemical properties differences among four biopharmaceuticals (protein, nucleic acid, glycoconjugate vaccine and virus), and then, analyzed the major challenges facing in four biopharmaceuticals sterilization and virus removal. The separation mechanisms of sterilization and virus removal are discussed focusing on both physical (size exclusion) and chemical (electrostatic interactions, hydrophobic adsorption) properties. Particular attention is given to membrane fouling mechanisms and advanced mitigation strategies at the membrane-biomolecule interface. By integrating fundamental scientific principles with practical engineering considerations, this review offers valuable insights for optimizing downstream bioprocessing and advancing membrane technology in the biopharmaceutical industry.

基于膜的灭菌和病毒去除已成为生物制药生产中质量控制和质量保证的重要方法，与传统的热和化学方法相比具有显着的优势。这种绿色技术在不添加化学添加剂的情况下保持了药物的完整性。然而，生物分子与膜表面之间复杂的相互作用往往导致膜污染和潜在的微生物突破。本文首先全面阐述了蛋白质、核酸、糖结合疫苗和病毒四种生物药物的理化性质差异，然后分析了四种生物药物灭菌和病毒去除面临的主要挑战。讨论了灭菌和病毒去除的分离机制，重点是物理（尺寸排除）和化学（静电相互作用，疏水吸附）性质。特别关注膜污染机制和先进的缓解策略在膜-生物分子界面。通过将基本科学原理与实际工程考虑相结合，本文综述为优化下游生物加工和推进生物制药行业的膜技术提供了有价值的见解。

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引用次数: 0

Mass transfer in membrane contactors for separating levulinic acid, formic acid, and furfural from biomass hydrolysate with physical organic solvents 用物理有机溶剂从生物质水解物中分离乙酰丙酸、甲酸和糠醛的膜接触器传质研究

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100151

Chatcha Saengsen , Laksamee Jeanmard , Litavadee Chuaboon , Wichitpan Rongwong

Levulinic acid (LA), formic acid (FA), and furfural were separated from an aqueous solution using membrane contactors with organic solvents. The aqueous mixture, simulating LA production's biomass hydrolysate from, contained 7 % LA, 3 % FA, and 4 % FF by weight. The mass transfer coefficients of solutes followed the order: methyl isobutyl ketone (MIBK) > toluene > 2-propanol > 1-octanol, while solute extraction followed FF > FA > LA. FF extraction was more dominated by the resistance of aqueous phase compared to other solutes. The membrane mass transfer resistances could not be neglected and affected the overall mass transfer performance. Using the membrane contactor could improve the FF selectivity compared to an equilibrium extraction technique. The FA selectivity over LA was investigated and a reactive organic solvent such as Aliquat336 in MIBK as well as replacing the organic phase with another aqueous phase enhanced the FA selectivity.

采用膜接触器与有机溶剂分离乙酰丙酸（LA）、甲酸（FA）和糠醛。模拟LA生产的生物质水解产物的水相混合物，按重量计含有7% LA， 3% FA和4% FF。溶质的传质系数顺序为：甲基异丁基酮（MIBK） >；甲苯比;丙胺比;1-辛醇萃取，溶质萃取依次为FF >；足总比;洛杉矶。与其他溶质相比，水相的阻力对FF萃取的影响更大。膜传质阻力不可忽视，影响着膜的整体传质性能。与平衡萃取技术相比，膜接触器可提高FF的选择性。研究了FA对LA的选择性，发现在MIBK中加入活性有机溶剂（如Aliquat336）以及用另一水相代替有机相可以提高FA的选择性。

引用次数: 0

Restricting ionic liquid in a network comprising of GO/CNT as a separation membrane for efficient CO2 capture 限制离子液体在由氧化石墨烯/碳纳米管组成的网络中作为有效捕获二氧化碳的分离膜

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100158

Dinesh K. Behera , Fan Wang , Bratin Sengupta , Qiaobei Dong , Weiwei Xu , Shiguang Li , Miao Yu

The release of carbon dioxide (CO₂) to the atmosphere remains a critical challenge in addressing climate change, with emissions from power plants being a primary contributor. Membrane-based separation processes offer cost-effective, robust, and energy efficient alternatives to CO₂ capture from power plants. Ionic liquids (IL), known for their high CO₂ affinity, low vapor pressure, and high thermal stability, are propitious materials for such separations. In this study, we try to address major challenges currently restricting IL-based membranes including the porous structure for loading IL and the loading procedure onto the porous structure. An ultrathin (∼230 nm) 2–dimensional composite network comprising of graphene oxide (GO) sheets intercalated carbon nanotubes (CNT) spatially confining IL targeting high CO₂ permeance was designed and fabricated. An IL, 1-ethyl-3 methylimidazolium tetrafluoroborate ([EMIM][BF₄] was used as the active separating medium. This GO/CNT hybrid network not only stabilizes the IL within the nanochannels because of interactions between cations of IL and negatively charged functional groups on GO (carboxyl, hydroxyl and carboxy groups) but also facilitates faster transport (increased nanochannels because of CNT incorporation) yielding a CO₂ permeance of ∼600 GPU (one order of magnitude higher than reported membranes employing the same ionic liquid) and a CO₂/N₂ selectivity of 62 under humid conditions and elevated temperatures (up to 80 °C). Our approach provides a modified strategy of using ionic liquids in the solution form as opposed to most studies using pure form for obtaining a scalable, ultrathin, stable supported IL membrane.

向大气中排放二氧化碳（CO2）仍然是应对气候变化的一个关键挑战，而发电厂的排放是主要原因。基于膜的分离工艺为发电厂的二氧化碳捕获提供了经济、可靠和节能的替代方案。离子液体（IL）以其高CO2亲和力，低蒸汽压和高热稳定性而闻名，是这种分离的有利材料。在本研究中，我们试图解决目前限制IL基膜的主要挑战，包括用于加载IL的多孔结构和在多孔结构上加载IL的程序。设计并制备了一种由氧化石墨烯（GO）片嵌入碳纳米管（CNT）组成的超薄（~ 230 nm）二维复合网络，该网络在空间上限制了靶向高CO2渗透的IL。以IL， 1-乙基-3甲基咪唑四氟硼酸盐（[EMIM][BF4]）为活性分离介质。这种氧化石墨烯/碳纳米管混合网络不仅稳定了纳米通道内的IL，因为IL的阳离子与氧化石墨烯上带负电荷的官能团（羧基）、羟基和羧基)，但也促进了更快的运输（由于碳纳米管的加入而增加了纳米通道），在潮湿条件和高温（高达80°C）下，二氧化碳的渗透率为~ 600 GPU（比使用相同离子液体的报道膜高一个数量级），CO2/N2选择性为62。我们的方法提供了一种改进的策略，即使用溶液形式的离子液体，而不是大多数使用纯形式的研究，以获得可扩展的、超薄的、稳定的支撑IL膜。

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引用次数: 0

Chiral membrane with intrinsic microporosity for enantioselective electrochemical recognition of tryptophan enantiomers 具有固有微孔的手性膜，用于色氨酸对映体的对映选择性电化学识别

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100162

Wanshuang Zhou , Cong Yu , Qiang Chen , Shi-Peng Sun , Xinbo Wang

Enantioselective recognition and separation of chiral molecules are pivotal in biomedical and pharmaceutical fields due to their distinct biological activities. Drawing inspiration from biological transmembrane systems, we developed a chiral-selective nanofluidic platform by embedding BINOL-derived stereogenic centers into polymers of intrinsic microporosity (PIMs). The resulting (R)-HBIN-Is membrane mimics the stereoselective capabilities of biological transporters, demonstrating a selectivity coefficient of 2.5 for D-tryptophan over L-tryptophan via electrochemical discrimination. This study marks the new application of PIMs in chiral-selective transmembrane transport, offering significant potential for advancing chiral membrane separation technologies in pharmaceutical production and biomedical diagnostics.

由于手性分子具有独特的生物活性，对映体选择性识别和分离在生物医学和制药领域具有重要意义。从生物跨膜系统中获得灵感，我们通过将binol衍生的立体中心嵌入到固有微孔（PIMs）聚合物中，开发了一种手性选择性纳米流体平台。所得到的(R)-HBIN-Is膜模拟了生物转运体的立体选择能力，通过电化学辨别，d -色氨酸比l -色氨酸的选择系数为2.5。该研究标志着pim在手性选择性跨膜运输中的新应用，为推进手性膜分离技术在药物生产和生物医学诊断中的应用提供了重要的潜力。

引用次数: 0

Outside Back Cover 外封底

IF 9.5

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/S2772-8234(25)00076-4

引用次数: 0

Eliminating lattice defects in UiO-66-NH2 membrane towards high-precision desalination 消除UiO-66-NH2膜的晶格缺陷，实现高精度脱盐

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100142

Wenwen Dong , Jiahui Yan , Taotao Ji , Mingming Wu , Kunpeng Yu , Yi Liu , Wenjing Hu , Yi Liu

Zirconium-based MOF membranes exhibit significant potential in energy-efficient desalination. Nevertheless, framework defect elimination, which represents an effective protocol to enhance their molecular sieving capacity and operation stability, remains highly challenging to date. In this study, we proposed a framework defect patching strategy to prepare robust UiO-66-NH₂ membrane with Zr₆O₄(OH)₄(OAc)₁₂ cluster source towards high-efficiency desalination. Ion sieving results indicated that increasing reaction temperature and ratio of ligand to Zr₆O₄(OH)₄(OAc)₁₂ cluster contributed to framework defect elimination. UiO-66-NH₂ membranes prepared under optimized conditions exhibited superior metal ion rejection rate (Al³⁺: 97.7 %) and operation stability over 20 days. Particularly, their water/NaCl separation performance well exceeded majority of reported polycrystalline 3D membranes, offering promising prospects for modulating molecular diffusion kinetics in MOF pores.

锆基MOF膜在节能脱盐方面具有巨大的潜力。然而，框架缺陷消除作为提高其分子筛分能力和运行稳定性的有效方案，迄今仍具有很大的挑战性。在本研究中，我们提出了一种框架缺陷修补策略，以Zr6O4(OH)4(OAc)12簇源制备健壮的UiO-66-NH2膜，以实现高效脱盐。离子筛分结果表明，提高反应温度和配体与Zr6O4(OH)4(OAc)12簇的比例有助于消除骨架缺陷。在优化条件下制备的UiO-66-NH2膜具有优异的金属离子截留率（Al3+: 97.7%）和20 d运行稳定性。特别是，它们的水/NaCl分离性能远远超过大多数已报道的多晶3D膜，为调节MOF孔中的分子扩散动力学提供了广阔的前景。

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引用次数: 0

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

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⁻¹. These results highlight the significance of SBS in enhancing both the alkaline stability and mechanical performance of PTP-based AEMs.

阴离子交换膜（AEM）结合了传统碱性水电解槽（awe）和质子交换膜水电解槽（PEMWEs）的优点，是具有更高效率和成本效益的阴离子交换膜水电解槽（AEMWEs）的核心部件。尽管近年来进行了广泛的研究，但AEMs仍然面临着重大挑战，特别是碱性稳定性不足和尺寸/机械稳定性有限。在这项工作中，我们通过将热塑性弹性体聚苯乙烯-嵌段聚丁二烯-嵌段聚苯乙烯（SBS）加入聚terphenyl胡椒啶（PTP）基体中来提高AEMs的机械稳定性和碱性稳定性。最佳的ptp - sbs - 2.5%膜具有出色的尺寸稳定性（在20°C时溶胀率为9.4%），良好的机械性能（湿态断裂时拉伸强度为51.5 MPa，伸长率为63.1%），低碱吸收率（0.875%）和优异的碱稳定性（1500 h后电导率保持率为92.4%）。值得注意的是，该膜在AEMWE中稳定运行超过3000 h，电压衰减率为41.1 μV h−1。这些结果突出了SBS在提高ptp基AEMs的碱性稳定性和力学性能方面的重要意义。

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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

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⁻² h⁻¹·bar⁻¹ 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⁻¹, 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.

垃圾填埋场渗滤液浓缩液的处理对环境构成重大挑战，特别是在从高浓度盐中分离和回收有价值的腐殖质物质方面。本研究以0.5 wt%的三乙醇胺（TEOA）和0.1 wt%的三甲基氯（TMC）为原料，通过界面聚合制备了一种新型的松散纳滤（LNF）膜，用于准确分离垃圾渗滤液浓缩物中的腐殖质和无机盐。优化后的TEOA膜具有较高的渗透通量，约为67.6 L m−2 h−1·bar−1，离子透过率超过90%，腐殖质截留率达到92%以上。考察了操作条件的影响。结果表明：随着无机盐浓度的增加，由于浓度极化加剧，静电相互作用减弱，无机盐截留率显著降低；腐殖质浓度的升高进一步加剧了膜污染和浓度极化，导致通量降低，腐殖质和无机盐的丢弃量增加。较高的温度和碱性pH值增加了通量并保持了稳定的排出物。此外，随后将两级膜过滤工艺应用于实际的垃圾渗滤液浓缩液样品。腐殖质浓度从1.5 g L−1富集到37.4 g L−1，在12.5的浓度系数下，回收率达到60%以上。回收的腐植酸物质符合含腐植酸水溶性肥料标准（NY1106-2010），突出了LNF膜在垃圾渗滤液浓缩液可持续管理和资源回收方面的潜力。

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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

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-CH₃) 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-CH₃ significantly increased from 1738 g/(m²·h) to 4648 g/(m²·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 (CO₂ 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.

聚二甲基硅氧烷（PDMS）膜通常用于乙醇-水分离。然而，由于渗透性和选择性之间的内在权衡，分离性能不足。在本研究中，我们报道了将甲基功能化的共价有机骨架（COF, TpBD-CH3）掺入PDMS膜中制备混合基质膜（MMMs），使乙醇通量大大提高了2.7倍。在60°C、5 wt%乙醇水溶液条件下，与原PDMS膜相比，添加0.1 wt% TpBD-CH3的膜的渗透通量从1738 g/（m2·h）显著提高到4648 g/(m2·h)，分离系数从7.32提高到8.40。分离性能的提高是由于COF的掺入增强了膜的疏水性和自由腔体，其气体渗透性显著提高（CO2渗透性达到26,720 Barrer）。这项研究表明，COF在开发基于pdms的有机水溶液或气体组分分离的MMMs方面具有潜力。

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