Article
Engineering, Chemical
Zelalem Gudeta Abdi, Juin-Yih Lai, Tai-Shung Chung
Summary: Novel beta-cyclodextrin (8-CD) incorporated P84 co-polyimide nanofiltration (NF) membranes were prepared using a green solvent. The membranes showed high separation performance, surface hydrophilicity, and antifouling characteristics. The membranes exhibited high water permeability, effective dye/salt separation, and the ability to separate binary dye solutions with different molecular weights. The membranes also maintained high dye rejection and salt permeation even at high NaCl concentrations in dye/salt mixtures. Therefore, the 8-CD incorporated NF membrane has great potential for the treatment of salt-containing dye wastewater.
Article
Engineering, Chemical
Zelalem Gudeta Abdi, Jyh-Chien Chen, Tai-Shung Chung
Summary: We have designed negatively charged nanofiltration membranes by modifying P84 flat membranes with HPEI polymers and infiltrating SCA4, which greatly enhance their chemical stability and molecular sieving capability. The membranes show excellent boron rejection rates at different pH values, outperforming membranes prepared by thin-film interfacial polymerization. This study demonstrates the potential of supramolecular macrocycles in designing efficient NF membranes for water reuse and removal of toxic ions.
Article
Engineering, Chemical
Chang Liu, Tanlong Xue, Yinhua Yang, Jinbo Ouyang, Huidong Chen, Shuai Yang, Guozhen Li, Di Cai, Zhihao Si, Shufeng Li, Peiyong Qin
Summary: The study focused on the effect of crosslinker KH571 on UV-crosslinking kinetics, membrane structure, and ethanol pervaporation separation performance. Replacing conventional PDMS with PDMS-PTFPMS block copolymer led to a fast membrane-forming process and excellent separation performance, with an ethanol separation factor of 11.3 and a total flux of 1149 g m(-2)h(-1) achieved.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Materials Science, Composites
Di Wu, Xin Zhao, Xiuting Li, Jie Dong, Qinghua Zhang
Summary: In this study, a method was used to prepare high-temperature resistant polyimide (PI) dielectric films. Dual-crosslinked PI composite films containing Cu elements were fabricated using amine crosslinking agent and coordination of Cu2+ with the N element in imidazole unit. The film's dielectric constant increased from 4.00 to 4.88 at 1 kHz, and the breakdown strength increased from 437 MV/m to 460 MV/m at room temperature. The discharge energy density (Ud) reached a maximum of 3.12 J/cm3 at 150 degrees C, and the charge-discharge efficiency (& eta;) was 69.4% with a 20% mol Cu2+ feeding content. It is noteworthy that the coordination bond form improved the hydrophobicity of the PI composite films by making Cu2+ occupy the position of the lone pair electron.
COMPOSITES COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Ching-Wen Hsieh, Bo-Xian Li, Shing-Yi Suen
Summary: This study investigated the application of alicyclic polyimides in pervaporation and developed mixed matrix membranes with SiO2 nanoparticles. The results showed that SiO2 content significantly affected the membrane performance, with optimal loading levels identified for different types of membranes.
Article
Engineering, Chemical
Shan Xu, Xiaolong Ren, Ning Zhao, Lei Wu, Zhiguang Zhang, Yanfang Fan, Nanwen Li
Summary: A high-performance crosslinked brominated 6FDA-based polyimide membrane was developed by tuning the permeability and selectivity through introducing bromine atoms into the polyimide structure. The crosslinking reaction greatly stabilized the membrane performance against plasticization under high CO2 feed pressure. This study provides a facile approach for the preparation of high-performance gas separation polymeric membranes with enhanced plasticization resistance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Hasan Fareed, Kyunghoon Jang, Woojin Lee, In S. Kim, Seunghee Han
Summary: An additive-free self-crosslinking technique was optimized to prepare MXene-coated pervaporation desalination membranes. The self-crosslinked MXene membrane at 140 degrees Celsius (M140) exhibited the best performance, with a stable d-spacing of 1.43 nm in distilled water and 1.48 nm in a 10 wt% NaCl solution. M140 showed a permeation flux of 70 kg m(2)h(-1) and salt rejection up to 99.9% for a 100 g/L NaCl solution at a feed temperature of 70 degrees Celsius. M140 also demonstrated successful suppression of salt transport on the permeate side during a 48-hour operation test with simulated brine.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Mohammed-Lamine Ouinten, Anthony Szymczyk, Aziz Ghoufi
Summary: Organic solvent nanofiltration (OSN) is a promising separation process, and P84 polyimide membranes and PIM-1 membranes are commonly used in OSN due to their suitable resistance toward organic solvents. In order to understand the molecular mechanisms of solvent and solute permeation, molecular simulations were conducted on acetone, methanol, and toluene in contact with P84 and PIM-1 membranes. It was found that the solvent uptake by the membranes was influenced by solvent confinement, polymer swelling ability, and polymer/solvent interactions.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Engineering, Chemical
Yue Sun, Huhu Zhao, Heng Mao, Mengxue Duan, Kun Wang, Nanbin Bao, Zhi-Ping Zhao, Huanjun Li
Summary: In this study, superhydrophobic mixed matrix membranes were constructed by incorporating hydrophobic silica hollow spheres into a polydimethylsiloxane matrix. The resulting composite membrane exhibited high separation performance with improved selectivity and comparable total flux in the pervaporation process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Jen-Yu Lee, Jin-Yun Zhan, Micah Belle Marie Yap Ang, Shih-Chieh Yeh, Hui-An Tsai, Ru-Jong Jeng
Summary: In this study, spirobisindane-functionalized graphene oxide (SFGO)/polyimide (Matrimid 5218) solutions were used to create nanocomposite membranes for alcohol dehydration. The membranes showed improved performance with the addition of spirobisindane structure, and different levels of dehydration were achieved depending on the alcohol feed solutions used. The modified membranes exhibited stability under various operating conditions, indicating potential for long-term use.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Ziheng Wang, Jiawei Sun, Na Li, Yingzhe Qin, Xiaowei Qian, Zongli Xie
Summary: This study demonstrates the use of polyethyleneimine (PEI) with different molecular weights to crosslink graphene oxide (GO) nanosheets and tune the interlayer spacing of the GO membrane. The dual crosslinking structure effectively restrains the swelling of GO and enhances the performance of the membrane in desalination. The optimized membrane exhibits outstanding pervaporation (PV) desalination performance with high water flux and salt rejection.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Yanan Li, Bingjie Huo, Zaifeng Xu, Huaqing Qi, Xin Li, Peizhe Cui, Zhaoyou Zhu, Yinglong Wang, Jingwei Yang, Jun Gao
Summary: The development of a basic extractive distillation process for separating an ester/alcohol/water system was reported, with mechanical vapor recompression technology and a redesigned heat exchange network improving energy efficiency. A hybrid pervaporation-distillation process was also developed to enhance environmental performance, although economic advantages over the enhanced distillation process were not clearly demonstrated due to high equipment costs.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Polymer Science
Seong-Joong Kim, Yeojin Ahn, Jeong F. Kim, Seung-Eun Nam, Hosik Park, Young Hoon Cho, Kyung-youl Baek, You-In Park
Summary: The study compared the effects of two different crosslinking methods on dense Matrimid membranes. The results showed that the liquid-phase crosslinking process allowed for uniform crosslinking across the membrane, exhibiting excellent chemical resistance and avoiding plasticization phenomenon. In contrast, membranes crosslinked using the methanol-swelling crosslinking process exhibited poor plasticization and chemical resistance properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Engineering, Chemical
Guoxiong Deng, Jiangzhou Luo, Xiangyun Liu, Xibo Zhang, Yilei Wang, Xueping Zong, Song Xue
Summary: A series of symmetrical H-shaped tetramine monomers were designed and synthesized, which were used to prepare high-performance network polyimide membranes with excellent rigidity, thermal stability, and mechanical performance. Adjusting the structure of the crosslinking center can efficiently tune the gas transport properties of the polymers, enhancing CO2 permeability while maintaining CO2/N2 ideal selectivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Wang Han, Zhao-Xu Wang, Ming-Jie Yin, Wen-Hai Zhang, Cheng-Gang Jin, Naixin Wang, Quan-Fu An
Summary: In this study, an intensified hydrogen-bonding complexed polymer nanoparticles (iHCPN) membrane was developed to address the need for a highly acid-resistant membrane in long-term esterification reactions. The results showed that the iHCPN membrane exhibited excellent stability and performance in the dehydration process, making it suitable for various synthesis systems.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Yingnan Feng, Martin Weber, Christian Maletzko, Tai-Shung Chung
Summary: Structural delamination across the hollow fiber wall is a major challenge in the fabrication of dual-layer hollow fiber membranes. The bore fluid composition has the most profound impact on fiber delamination. Carefully designed spinning conditions can mitigate the occurrence of delamination and result in membranes with improved water filtration permeance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
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
Xi-Er Chen, Dave Mangindaan, Hsiu-Wen Chien
Summary: This study discovered that spent coffee grounds (SCG) possess photothermal properties under near-infrared laser irradiation, making them suitable for applications as photothermal materials. Additionally, when incorporated into polyNIPAM hydrogels, SCGs can induce thermal shrinkage and bending, indicating their potential as photothermal actuators. These findings provide new insights for the recycling and reuse of SCGs.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(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.
Review
Green & Sustainable Science & Technology
Dave Mangindaan, Azmier Adib, Harvey Febrianta, Donald John Calvien Hutabarat
Summary: This study uses literature review and bibliometric analysis to describe the waste management situation in Indonesia during COVID-19 and reveals research and publication gaps.
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.
Review
Green & Sustainable Science & Technology
Dave Mangindaan, Emil Robert Kaburuan, Bayu Meindrawan
Summary: Black soldier fly larvae show promise as a biological agent in addressing the waste-food-energy nexus. With a short life cycle, the ability to consume organic waste equal to its own weight daily, and the capacity to convert into larvae with high protein and lipid content, they offer a one-step solution to the WFE nexus. This bibliometric analysis aims to characterize the progress of publications over the past decade, identify future research directions, highlight top publications for wider dissemination, and pinpoint productive authors and leading countries for potential collaborations.
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)