Article
Engineering, Chemical
Pratyush Patnaik, Suman Sarkar, Sandip Pal, Uma Chatterjee
Summary: An anion exchange membrane (AEM) with controlled graft length and density was prepared through grafting 2-(dimethylamino)ethyl methacrylate (DMA) chains from the backbone of poly(vinylidene fluoride) (PVDF) using Cu(I) catalyzed atom transfer radical polymerization. The AEM showed exclusive selectivity and excellent stability in the diffusion dialysis process for separating hydrochloric acid from metal salts.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Environmental Sciences
Muhammad Imran Khan, Abdallah Shanableh, Suryyia Manzoor, Javier Fernandez, Sameh M. Osman, Rafael Luque
Summary: Diffusion dialysis (DD) process with anion exchange membranes (AEMs) is an environmentally-friendly and energy-efficient technique for acid recovery from acidic wastewater. In this study, dense tropinium-functionalized AEMs were developed via solution casting, which exhibited excellent mechanical, thermal, and chemical stability. These AEMs demonstrated improved DD efficiency in treating acid waste from HCl/FeCl2 mixtures compared to a commercial membrane.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Xinqiang You, Jiaqi Chen, Shuai Pan, Gang Lu, Lin Teng, Xiaocheng Lin, Shuaifei Zhao, Jiuyang Lin
Summary: This study introduces the preparation of piperazine-functionalized porous AEMs, which exhibit high acid permeability and show promising potential for acid recovery from acidic wastewater through diffusion dialysis.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Jiuyang Lin, Xu Dan, Jing Wang, Sisi Huang, Lihai Fan, Ming Xie, Shuaifei Zhao, Xiaocheng Lin
Summary: This study presents in-situ cross-linked porous anion exchange membranes (AEMs) with tunable microstructures and high diffusion dialysis (DD) performance for acid recovery. The prepared AEMs exhibit significantly superior DD performance due to the high free volume and cross-linked networks within the membranes. The optimized AEM shows 2.6 times higher acid dialysis coefficient (UH+) and 255.4 times higher acid/salt separation factor (S) compared to the commercial DF-120 AEM. Therefore, these low-cost, high-performance in-situ cross-linked porous AEMs can potentially contribute to large-scale acid recovery applications.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Matteo Gigli, Barbara Mecheri, Silvia Licoccia, Alessandra D'Epifanio
Summary: Crosslinked hydrocarbon-based cation exchange membranes have been developed for vanadium redox flow battery applications, with the membrane containing 9% of crosslinker showing the best performance. The crosslinking strategy allows for stable membranes in highly oxidizing environments, increasing the rigidity of the polymer backbone.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2021)
Article
Engineering, Chemical
Xinming Du, Zhe Wang, Hongyu Zhang, Yongjiang Yuan, Hui Wang, Zhenguo Zhang
Summary: Novel self-organized nanostructured cross-linked AEMs based on poly (aryl piperidinium) were successfully synthesized for acid recovery via DD, improving acid flux and selectivity between acid and salt systems. The prepared AEMs exhibited high H+ dialysis coefficients and good separation factors, showing potential for acid recovery applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Wei Chen, Haiyang Shen, Yifei Gong, Ping Li, Congliang Cheng
Summary: In this study, quaternized poly epichlorohydrin (QPECH) was synthesized by reacting poly epichlorohydrin (PECH) with N, N-dimethylethanolamine (DMEA). A series of anion exchange membranes (AEMs) were fabricated by mixing different amounts of QPECH with polyvinyl alcohol (PVA) and tetraethyl silicate (TEOS) through sol-gel reaction. The chemical structure of QPECH was confirmed by Fourier transform infrared (FTIR) and 1H nuclear magnetic resonance (NMR). The physical and chemical properties of the composite membranes, including thermogravimetric analysis (TGA), water uptake (WR), ion exchange capacity (IEC), linear expansion rate (LER), and diffusion dialysis (DD), were investigated using FT-IR, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The performance of the PVA/QPECH composite membranes in acid recovery and selectivity was comprehensively discussed, and the results showed superior performance compared to commercial membrane DF-120. Overall, this study demonstrated the potential of using anion exchange membranes based on PVA/QPECH for acid recovery through the DD method.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Jiuyang Lin, Junming Huang, Jing Wang, Junwei Yu, Xinqiang You, Xiaocheng Lin, Bart Van der Bruggen, Shuaifei Zhao
Summary: A novel porous anion exchange membrane was designed by one-step crosslinking and quaternization, showing high performance in acid recovery by diffusion dialysis. This membrane has great potential for efficient acid recovery from highly acidic wastewater to support environmental sustainability.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Ni Yan, Rahul Sujanani, Jovan Kamcev, Eui-Soung Jang, Kentaro Kobayashi, Donald R. Paul, Benny D. Freeman
Summary: Salt permeability and ionic conductivity are critical properties for membranes in water purification and energy applications. In this study, a series of uncharged and charged membranes were synthesized and the effects of polymer structure on ion transport properties were investigated. The results showed that water content has a strong influence on ion diffusion in both uncharged and charged polymers.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Binghui Liu, Yuting Duan, Tingting Li, Jialin Li, Haiqiu Zhang, Chengji Zhao
Summary: A series of anion exchange membranes based on poly(arylene piperidinium) with bis-cation strings were prepared using Menshutkin reaction for diffusion dialysis. The membranes demonstrated favorable overall properties due to the self-assembled nanostructured hydrophilic-hydrophobic phase separation morphology, leading to high H+ dialysis coefficients and potential application in acid recovery.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Muhammad Imran Khan, Abdallah Shanableh, Majeda Khraisheh, Fares AlMomani
Summary: Diffusion dialysis (DD) is an effective process for acid recovery using anion exchange membranes (AEMs) formulated with TMA and BPPO. The prepared porous AEMs showed promising properties such as high water uptake, ion exchange capacity, and acid dialysis coefficients, making them excellent choices for acid recovery applications. The study also discussed the impact of TMA content on acid recovery, providing valuable insights for further research in this area.
Article
Biochemistry & Molecular Biology
Muhammad Adnan Ashraf, Atif Islam, Muhammad Arif Butt, Hafiz Abdul Mannan, Rafi Ullah Khan, Kashif Kamran, Shahid Bashir, Javed Iqbal, Ahmed A. Al-Ghamdi, Abdullah G. Al-Sehemi
Summary: Novel AEMs composed of quaternized diaminobutane and poly(vinyl alcohol) cross-linked by tetraethoxysilane were prepared and characterized for their unique ions transport properties and performance in acid recovery via diffusion dialysis. The prepared membranes showed moderate thermal stability, good water uptake properties, and promising dialysis coefficient values, indicating their potential for acid recovery applications.
Article
Engineering, Chemical
Binghui Liu, Tingting Li, Qijia Li, Siyuan Zhu, Yuting Duan, Jialin Li, Haiqiu Zhang, Chengji Zhao
Summary: By introducing hydrophilic groups into the polymer, the dimensional stability and ion selectivity of cross-linked anion exchange membranes can be effectively improved.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Muhammad Imran Khan, Majeda Khraisheh, Fares AlMomani
Summary: This study reported a method for synthesizing AEMs through quaternization of BPPO-based anion exchange membranes for acid recovery via diffusion dialysis, which exhibited excellent performance in the recovery process.
Article
Polymer Science
Xinqiang You, Jiaqi Chen, Lin Teng, Jiuyang Lin, Xiaocheng Lin
Summary: Diffusion dialysis for acid recovery is limited by the low acid dialysis coefficient of anion exchange membranes. Porous AEMs with high free space volume were fabricated, showing improved DD performance compared to commercial membranes. The modification of EDA and NMI allowed for control over the microstructure and performance of the AEMs, demonstrating potential for widespread use.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Engineering, Chemical
Rong Fu, Huangying Wang, Junying Yan, Ruirui Li, Chenxiao Jiang, Yaoming Wang, Tongwen Xu
Summary: Bipolar membrane electrodialysis (BMED) is a promising technique for upgrading traditional manufacturing procedures and achieving a circular economy. Researchers proposed a novel asymmetric bipolar membrane electrodialysis (ABMED) to regulate water splitting and ion migration, which showed comparable performance to BMED for acid/base production.
Article
Chemistry, Multidisciplinary
Kang Peng, Yuanyuan Li, Gonggen Tang, Yahua Liu, Zhengjin Yang, Tongwen Xu
Summary: In the development of aqueous organic redox flow batteries (AORFBs), anthraquinone derivatives (AQs) attract a great deal of attention as promising negative electrolytes. This study presents a solvation regulation strategy to extend the lifetime of 2,6-dihydroxyanthraquinone (DHAQ) electrolytes by incorporating tetramethylammonium cations (TMA(+)) to interfere with the solvation structure of DHAQ(2-)/DHAHQ(4-) anions. The strategy effectively reduces the capacity fade rate of DHAQ/K4Fe(CN)(6) cells caused by electrolyte decomposition.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Chemical
Tingting Xu, Bin Wu, Yifan Li, Yanran Zhu, Fangmeng Sheng, Liang Ge, Xingya Li, Tongwen Xu
Summary: This study investigates the ion transport properties of different porous organic cage membranes. The window-to-window alignment of CC3 membranes leads to continuous channels, resulting in high ion permeability and selectivity. Compared to CC19, the hydrophobic channels of CC3 membranes facilitate fast ion transport by suppressing the hydrogen-bonding interaction. Tuning the surface charge of CC3 membranes increases the selectivity towards mono-/divalent cations. This work provides guidelines for the construction of efficient ion separation membranes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Chengpeng Wei, Weisheng Yu, Yang Zhang, Fan Zhang, Ming Li, Xianhe Shen, Kaiyu Zhang, Xiaolin Ge, Liang Wu, Tongwen Xu
Summary: In this study, a novel AAEMs with pyrene-containing ether-free polymer backbones and rigid pyrene units was designed, which showed improved ion conductivity, chemical durability, and mechanical strength.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Environmental
Fangmeng Sheng, Yuan Xia, Zhang Zhao, Tingting Xu, Liang Ge, Xingya Li, Tongwen Xu
Summary: Acid recovery is of great interest due to the large amount of acid chemicals used in various industries, leading to the generation of acidic wastewater. A self-standing COF (TpTAPA) membrane with high stability in acid and base solutions is developed. The membrane exhibits excellent separation performance for H+ over other cations, and the decorated nanochannels show different effects on H+ transport and multivalent cation leakage. These findings provide insights for the design of efficient nanoporous membranes for acid recovery from complex feed systems.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Weisheng Yu, Chengpeng Wei, Kaiyu Zhang, Jianjun Zhang, Zijuan Ge, Xian Liang, Michael D. Guiver, Xiaolin Ge, Liang Wu, Tongwen Xu
Summary: In this study, a 4-sulfocalix[4]arene (4-SCA)-modified graphene oxide (GO) membrane was successfully fabricated, which exhibited high ion permeability and selectivity, as well as pH-responsiveness. The membrane preferentially transported potassium ions over radionuclide cations and showed an order of magnitude higher ion selectivity than the unmodified GO membrane. The improved selectivity resulted from the specific recognition between 4-SCA and radionuclide cations, which was responsive to the protonation/deprotonation transformation of 4-SCA. This biomimetic permselective GO membrane has potential applications in efficient nuclear wastewater treatment and contributes to a deeper understanding of biomimetic ion transport mechanisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Xianhe Shen, Xian Liang, Yan Xu, Weisheng Yu, Qiuhua Li, Xiaolin Ge, Liang Wu, Tongwen Xu
Summary: This study reports the use of an antioxidant approach to grow a polypyrrole/manganese dioxide (PPy/MnOx) radical quenching layer on a highly proton conductive membrane surface to alleviate the oxidative degradation of the proton exchange membrane (PEM) in PEMFC. The modified PEM exhibits improved durability and slower open circuit voltage decay, without significantly impacting fuel cell performance. The resulting H2/O2 PEMFC single cell shows a promisingly high power density of over 900 mW cm-2 at 80 degrees C with 100% RH.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Peipei Zuo, Chunchun Ye, Zhongren Jiao, Jian Luo, Junkai Fang, Ulrich S. Schubert, Neil B. McKeown, T. Leo Liu, Zhengjin Yang, Tongwen Xu
Summary: The development of efficient ion-transport membranes is crucial for improving separation processes and electrochemical technologies. We have designed synthetic membranes with covalently bonded polymer frameworks that achieve near-frictionless ion flow through rigidly confined ion channels. These membranes have the potential to greatly enhance the performance of electrochemical devices and molecular separation.
Article
Engineering, Chemical
Tingting Xu, Yue Wang, Qian Chen, Yanran Zhu, Wenmin Li, Fangmeng Sheng, Liang Ge, Xingya Li, Tongwen Xu
Summary: Mixed matrix membranes (MMMs) are promising in ion separation due to their simple preparation process and potential industrial applications. By using a soluble porous organic cage (POC) as the filler, large scale and interfacial gap-free ionic polymer membranes can be fabricated with high ion flux and selectivity, as well as excellent stability during the electrodialysis process.
Article
Engineering, Chemical
Huangying Wang, Yang Wang, Junying Yan, Rong Fu, Baoying Wang, Chenxiao Jiang, Yaoming Wang, Tongwen Xu
Summary: By comparing the bipolar membrane electrodialysis (BMED) with the chlor-alkali process for sodium hydroxide production, it was found that BMED has lower energy consumption and less impact on global warming at moderate salt concentrations. Therefore, BMED is a promising and sustainable technique for base production.
Article
Engineering, Environmental
Hongyu Ma, Yun Xia, Zhouyou Wang, Tongwen Xu, George P. Simon, Huanting Wang
Summary: This study presents a dual-channel ion conductor membrane for concentration-driven lithium-selective ion diffusion, achieving high selectivity and high flux in lithium extraction. The membrane design has the potential for low energy consumption and minimal environmental impact in the field of lithium-ion batteries.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Kaiyu Zhang, WeiSheng Yu, Xiaolin Ge, Liang Wu, Tongwen Xu
Summary: In this study, the degradation barriers and mechanisms of heterocyclic quaternary ammoniums (QAs) were calculated using density functional theory (DFT). It was found that the chair conformation and ring structure of heterocyclic QAs inhibit Hoffman degradation and that methyl SN2 is the primary degradation pathway. Higher ring strain and electron-withdrawing groups negatively impact stability. The position of substituted methyl groups significantly affects molecule stability.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Wanjie Song, Xin Zhang, Cui Yang, Zhengjin Yang, Liang Wu, Xiaolin Ge, Tongwen Xu
Summary: Anion-exchange membranes that selectively transport OH(-), known as alkaline membranes, are increasingly important for electrochemical energy devices. This article discusses the research progress of alkaline membranes in terms of backbone structures, synthesis methods, and applications. The evaluation of synthesis methods and description of membrane stability enhancement strategies provide valuable insights for structural design. The future priority of addressing alkaline membranes from a scientific and engineering perspective is presented to accelerate the deployment of relevant technologies in alkaline media.
ACS CENTRAL SCIENCE
(2023)
Review
Materials Science, Multidisciplinary
Baoying Wang, Yaoming Wang, Tongwen Xu
Summary: Polymer inclusion membranes (PIMs) have attracted significant attention in metal separation and recovery due to their advantages of high selectivity, long service life, high stability, flexible design, and low cost. This review provides an overview of the preparation methods and composition of PIMs, discusses the relationship between the physicochemical properties of membrane components and the performance of PIMs, elucidates the metal transport mechanism, and summarizes the modification and separation intensification methods. The challenges and perspectives in the field of metal separation and recovery are also proposed.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Weisheng Yu, Xiaoqi Yang, Xian Liang, Yan Xu, Xianhe Shen, Xiaolin Ge, Liang Wu, Tongwen Xu
Summary: Reducing catalyst loading and humidity dependence is important for commercializing PEMFCs. The use of fluorine-free hydrocarbon membranes instead of perfluorinated sulfonic-acid PEMs can reduce manufacturing costs. The AS-MEA, fabricated using an all spraying method, shows superior performance compared to the CCS-MEA, particularly at low humidity and catalyst loading, and also exhibits good durability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
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)
