Article
Engineering, Chemical
Ze-Xian Low, Junjie Shen
Summary: Through static aging experiments and cross-flow aging protocols, the stability of four commercial OSN membranes in different organic solvents was studied. The results showed that acetonitrile had the most significant effect on the membranes, and polyimide-based membranes exhibited signs of aging with increasing temperature. The new cross-flow aging protocol can facilitate rapid screening of OSN membranes for industrial use.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Polymer Science
Gui Min Shi, Yingnan Feng, Bofan Li, Hui Min Tham, Juin-Yih Lai, Tai-Shung Chun
Summary: Organic solvent nanofiltration (OSN) has emerged as an energy-efficient alternative in the field of solvent separations, with the recent advances in fabrication of high-grade polymeric membranes continuously pushing the boundaries of separation performance.
PROGRESS IN POLYMER SCIENCE
(2021)
Review
Biochemistry & Molecular Biology
Liyang Liu, Shaoxiao Liu, Enlin Wang, Baowei Su
Summary: This paper critically reviewed the recent research progress in the preparation of hollow fiber organic solvent nanofiltration (OSN) membranes with high performance, including different materials, preparation methods, and modification treatments. The paper also predicts the future direction of hollow fiber OSN membrane development. Hollow fiber OSN membranes have gained attention due to their high packing density and easy scale-up compared to flat-sheet OSN membranes.
Article
Engineering, Chemical
Fangyuan Chen, Yu Peng, Enlin Wang, Shuxin Zhao, Junjie Song, Honghai Li, Baowei Su
Summary: This study successfully prepared fluorinated polyamide organic solvent nanofiltration (OSN) membranes with ultra-low surface roughness and high stability. The membranes exhibited good permeance and high rejection rates in various solvents, as well as excellent stability in highly polar solvents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Nanoscience & Nanotechnology
Ali Akbar Heidari, Hossein Mahdavi
Summary: A high-performance TFC membrane for organic solvent nanofiltration (OSN) was successfully prepared, with a PE membrane support treated by etching and oxidation to enhance separation performance and solvent resistance.
ACS APPLIED NANO MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Rick van Lin, Paulina A. Sosa Fernandez, Tymen Visser, Patrick de Wit
Summary: Increasing consumption of plastics leads to environmental problems due to waste generated from production. Chemical recycling methods, like pyrolysis, offer potential for increased recycling rates and reduced reliance on fossil fuels. Organic solvent nanofiltration shows promise for separating valuable components from pyrolysis oil derived from plastic waste with low energy consumption.
Article
Chemistry, Multidisciplinary
Jet Yeo, Ludmila Peeva, Seoyeon Chung, Piers Gaffney, Daeok Kim, Carla Luciani, Sergey Tsukanov, Kevin Seibert, Michael Kopach, Fernando Albericio, Andrew Livingston
Summary: A one-pot liquid phase peptide synthesis was reported, which involved iterative addition of amino acids to a nanostar support and isolation of the growing peptide using organic solvent nanofiltration (OSN) after each synthesis cycle. The use of a three-armed and monodisperse nanostar support enabled efficient nanofiltration and real-time monitoring of each process cycle. This method allowed for more efficient peptide synthesis while maintaining the benefits of liquid phase synthesis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Chemical
Adam Oxley, Andrew G. Livingston
Summary: Fouling is a major challenge in membrane-based separations. This study focuses on anti-fouling membranes for organic solvent systems using graft modification. The results show that the anti-fouling properties of the modified membranes depend on the interactions between the modifying polymer and the solvent. Hydrophilic graft modifiers exhibit favorable interactions in water, while hydrophobic graft modifiers exhibit superior anti-fouling properties in polar organic solvents.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Jaewon Lee, Hyeonmin Yang, Giyoung Park, Tae-Hyun Bae
Summary: This study fabricated crosslinked PBI-based OSN membranes with excellent stability under strongly basic conditions. The membranes showed reasonable permeance and sharp molecular discrimination in pure solvents, and their separation performance was reversible at high pH values. These crosslinked PBI membranes hold great potential for OSN applications under basic conditions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Baiwang Zhao, Gui Min Shi, Juin-Yih Lai, Tai-Shung Chung
Summary: A braid-reinforced PBI hollow fiber membrane with high mechanical strength and low swelling ratio has been developed. The membrane shows improved separation performance and stability compared to self-supporting hollow fibers. The braid-reinforced membrane has potential applications in solvent resistant nanofiltration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ning Cao, Ziyu Lin, Ruiyin Sun, Liyuan Chen, Jinhui Pang, Zhenhua Jiang
Summary: This study introduces stable and crosslinked GO membranes based on SPEEK substrates through PEI repairing, addressing the challenges of GO membranes' swelling and interlayer defects. These membranes exhibit high flux and good separation performance in organic solvents, along with long-term stability.
Article
Nanoscience & Nanotechnology
Yawen Zhang, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jinghui He, Jianmei Lu
Summary: In this study, stable lamellar membranes were prepared by electrostatic attraction and hydrogen bond formation between polycation polyethyleneimine (PEI) and negatively charged MXene. The interlayer d-spacing of the membrane could be changed by adjusting the suspension pH, allowing for precise molecular separation and high organic solvent penetration. Moreover, the insertion of PEI did not hinder the passage of water molecules. The optimized MXene-PEI membranes showed excellent channel stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Zhen-Yuan Wang, Shuxuan Li, Shengjie Xu, Long Tian, Baowei Su, Lihui Han, Bishnupada Mandal
Summary: The study investigated the effects of air gap length, bore fluid composition, and dope flow rate on the structure, performance, and stability of HF-OSN membranes, revealing that air gap length significantly influences the compactness of the skin layer, shear rate plays a key role in membrane properties and stability, and bore fluid composition affects membrane structure changes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Shuxuan Li, Fangyuan Yang, Shaoxiao Liu, Honghai Li, Baowei Su, Lihui Han, Xueli Gao, Congjie Gao
Summary: A thin film composite (TFC) membrane with two-dimensional (2D) covalent organic frameworks (COFs) as interlayer was fabricated via interfacial polymerization. The optimized membrane showed excellent separation performance, with high permeance and rejection, as well as solvent resistance.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Eric Ziemann, Arindam Kumar Das, Paramita Manna, Revital Sharon-Gojman, Michal Sela-Adler, Charles Linder, Roni Kasher, Roy Bernstein
Summary: This study presents a facile method to fabricate crosslinked polyethersulfone membranes with remarkable stability in organic solvents. The performance of the membranes can be easily adjusted by controlling the polymer fraction. The weeklong filtration experiment highlights the excellent stability of the membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Ji Wu, Can Zeng Liang, Ali Naderi, Tai-Shung Chung
Summary: This study introduces a novel nanocomposite membrane design using soluble organic macrocyclic cavitands, which addresses the issue of discrete nanofiller phases in molecular-sieving membranes and achieves excellent molecular-seiving performance. These membranes exhibit outstanding high-temperature mixed-gas H-2/CO2 separation capabilities, making them highly promising for various energy-intensive molecular separations.
ADVANCED MATERIALS
(2022)
Article
Engineering, Chemical
Luyao Zhang, Yingxian Shi, Tao Wang, Shenhui Li, Xi Zheng, Zhenzhen Zhao, Yingnan Feng, Zhiping Zhao
Summary: The novel PMIA ultrafiltration membrane with enhanced anti-fouling performance was successfully designed using Pluronic F127, which effectively improved membrane structure and properties, increased water permeation, and slightly reduced rejection to pollutants. Additionally, the membrane's fouling resistance and stability were remarkably improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ji Wu, Tai-Shung Chung
Summary: By utilizing 4-sulfocalix[4]arene (SCA4) molecules, this unconventional nanocomposite membrane design can effectively separate CO2 from H2, demonstrating significantly enhanced H2/CO2 separation efficiency, mechanical properties, and long-term stability under high-temperature and high-pressure conditions. These membranes also possess a single-phase composite structure that surpasses conventional phase-segregated mixed-matrix membranes in processability, providing a versatile toolbox for designing advanced molecular-sieving membranes with optimal performance, robust properties, and scalability.
Article
Biochemistry & Molecular Biology
Weikun Paul Li, Aung Thet Paing, Chin Ann Chow, Marn Soon Qua, Karikalan Mottaiyan, Kangjia Lu, Adil Dhalla, Tai-Shung Chung, Chakravarthy Gudipati
Summary: The novel tri-bore polyvinylidene difluoride (PVDF) hollow fiber membranes were successfully scaled-up for industrial production and optimized for large-scale processes. After assembly into different length modules, the membranes showed high permeate flux and salt rejection rates in membrane distillation applications.
Article
Biochemistry & Molecular Biology
Marn Soon Qua, Yan Zhao, Junyou Zhang, Sebastian Hernandez, Aung Thet Paing, Karikalan Mottaiyan, Jian Zuo, Adil Dhalla, Tai-Shung Chung, Chakravarthy Gudipati
Summary: Hollow fiber membranes made from PVDF polymer with a unique structure have been developed, which exhibit good mechanical strength and water vapor transportation. Through technology translation, the manufacturing scale of the membranes has been successfully increased, making them suitable for high-efficiency desalination and industrial wastewater applications.
Article
Engineering, Chemical
Ming -Yu Lv, Shen -Hui Li, Heng Mao, Ying-Nan Feng, Ao-Shuai Zhang, Li-Hao Xu, Sen Wang, Wen -Wen Xie, Zhi-Ping Zhao
Summary: Polymeric membranes with high propylene permeance and sufficient separation factor were prepared by incorporating 2-methylimidazole (MIM) into polydimethylsiloxane (PDMS). MIM not only promoted the crosslinking process of PDMS, but also showed a preferential affinity for propylene, resulting in enhanced propylene/nitrogen separation. The MIM-incorporated PDMS membranes exhibited superior gas separation performance compared to other reported propylene-selective membranes. It is a promising alternative for hydrocarbon recovery and provides insight into membrane materials for gas separation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Yu-Jie Wang, Yiqun Liu, Xin Wei, Li -Ming Ding, Ying-Nan Feng, Zhi-Ping Zhao
Summary: In this study, environmentally-friendly castor oil and soybean oil were used to produce polypropylene hollow fiber microporous membranes via thermally induced phase separation. The addition of castor oil led to changes in membrane pore structure and phase separation behavior. The effects of spinning process parameters on the properties of the membranes and desalination performance were also investigated. The findings of this study provide important guidance for mass production of polypropylene hollow fiber microporous membranes.
Review
Engineering, Chemical
Seleman Mahamoud Said, Tao Wang, Ying-Nan Feng, Yongsheng Ren, Zhi-Ping Zhao
Summary: Metal-phenolic networks (MPNs) are supramolecular materials with abundant features, which can enhance membrane performance and improve water filtration applications through the incorporation of nanomaterials and polymers.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Multidisciplinary Sciences
Bofan Li, Sheng Wang, Xian Jun Loh, Zibiao Li, Tai-Shung Chung
Summary: In the state-of-the-art membrane industry, sustainable and closed-loop recyclable membranes have been innovated using covalent adaptable networks (CANs) with thermally reversible Diels-Alder (DA) adducts. These membranes exhibit excellent mechanical properties, thermal and chemical stabilities, and separation performance comparable to or even higher than nonrecyclable membranes. The used membranes can be depolymerized to remove contaminants and refabricated into new membranes, filling in the gaps in closed-loop recycling and promoting the advancement of sustainable membranes for a green membrane industry.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Engineering, Environmental
Ji Wu, Jie Gao, Shing-Bor Chen, Tai-Shung Chung
Summary: Tuning the permeation properties of TFN membranes through molecular redesign is important for RO desalination performance above the trade-off limit. Activation by organic solvents can boost water permeability but has rejection loss constraints. This study innovatively integrated soluble organic macrocyclic cavitands in the activating solvent to form cavity-bearing nanocomposite structures, which improved water permeability and salt/boron rejection.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Liang Ying Ee, Qipeng Zhao, Jie Gao, Chit Kai Lim, Kai Xue, Sze Yuet Chin, Sam Fong Yau Li, Tai-Shung Chung, Shing Bor Chen
Summary: In this study, facile intercalation and functionalization of β-cyclodextrin onto layered double hydroxides have resulted in the formation of accessible hydroxyl functional groups and anions that exhibit strong sorption and host-guest interaction with boron. The modified LDH was employed to fabricate a polyamide-based thin-film nanocomposite membrane with high salt rejection and water permeance for brackish water, achieving a high boron rejection rate as well. This pioneering study provides valuable insights into the design of brackish water reverse osmosis membranes using macrocyclic molecules and inorganic layered nanomaterials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Qianqian Zeng, Die Ling Zhao, Liguo Shen, Hongjun Lin, Ning Kong, Lei Han, Cheng Chen, Jiaheng Teng, Chuyang Tang, Tai-Shung Chung
Summary: This study inserted titanium oxide nanotubes into the interlayer space of 2D MXene-based membranes to prepare PMT membranes with excellent performance. The PMT membrane has outstanding hydrophilicity, high retention rates, and ultra-high permeability. It also exhibits excellent antifouling and self-cleaning properties. The incorporation of TiONT increased the interaction energy between the membrane and pollutants, thereby improving its antifouling performance. This novel 2D membrane shows great promise for large-scale continuous separations of oil/water emulsions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Fan Feng, Ji Wu, Can Zeng Liang, Martin Weber, Sui Zhang, Tai-Shung Chung
Summary: In this work, scalable polyphenylsulfone (PPSU) and polybenzimidazole (PBI) polymers were blended to create an enhanced polymer matrix that utilized the permeability and mechanical flexibility of PPSU and the selectivity and thermal stability of PBI. Calix[6]arene (CA6) was incorporated into the blend matrix to further enhance the H2/CO2 selectivity. The nanocomposite blend membrane achieved a significantly higher H2/CO2 selectivity with minimal permeability loss, surpassing the Robeson upper bound. This work presents exciting possibilities for designing molecularly mixed composite membranes (MMCMs) with better scalability compared to conventional mixed-matrix designs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Baiwang Zhao, Jun Wen Wong, Can Zeng Liang, Ji Wu, Tai-Shung Chung, Sui Zhang
Summary: Researchers developed an inner-selective polyethersulfone-polydimethylsiloxane (PES-PDMS) thin-film composite (TFC) hollow fiber membrane for CO2/N2 separation. The membrane exhibited high CO2 permeance and CO2/N2 selectivity, making it a promising candidate for post-combustion CO2 capture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Physical
Kai Yu Wang, Martin Weber, Tai-Shung Chung
Summary: PBI has been explored for fabricating HFMs for liquid and gas separations due to its chemical resistance and stability, enhancing separation performance. State-of-the-art technologies can fabricate macrovoid-free PBI HFMs, and chemically modified PBI membranes, PBI blended membranes, and PBI composite membranes can improve performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)
