Article
Materials Science, Multidisciplinary
Subin Oh, Junsik Bang, Hyoung-Joon Jin, Hyo Won Kwak
Summary: Currently, the majority of oil-water separation membranes are made of fluorine-based polymers with low surface energy. However, these materials are non-biodegradable and require a large amount of organic and toxic solvents in the manufacturing process. Therefore, there is increasing interest in developing a new eco-friendly oil-water separation membrane that does not cause secondary pollution and exhibits selective wettability characteristics.
ADVANCED FIBER MATERIALS
(2023)
Article
Engineering, Chemical
Ruilin Su, Simin Li, Wanlin Wu, Chao Song, Guoqiang Liu, Yang Yu
Summary: Membrane separation technology, especially using electrospinning for nanofibrous membranes, has shown great potential in treating oily wastewater and oil-contaminated water due to its flexibility and high efficiency. Recent advancements in superhydrophobic or superhydrophilic electrospun nanofibrous membranes have demonstrated promising oil/water separation performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Baibing Wei, Kai Wang, Jiarong Wang, Tian C. Zhang, Xiaobao Tian, Shaojun Yuan, Yingqi Li, Haiqing Chang, Ying Liang, Zhihong Zhou
Summary: A thermo-modulated nanofibrous skin covered Janus membrane with good antifouling ability and oil-water separation performance was successfully developed using a scalable synergetic electrospraying/electrospinning method. The membrane exhibited high flux and efficiency in separating oil/water mixtures, and demonstrated improved wettability and water permeability with temperature variation. It also showed excellent antifouling and cleaning ability due to its thermoresponsive property.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Kanupriya Nayak, Anubhav Kumar, Pritam Das, Bijay P. Tripathi
Summary: The polydopamine mediated amphiphilic molecular grafting approach combines hydrophilic and hydrophobic segments to create surfaces with enhanced antifouling properties. The modified surface effectively prevents protein adsorption and shows superior antifouling performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Environmental Sciences
Jiahui Zhao, Lin Cao, Xiao Wang, Haoling Huo, Huaijun Lin, Qiwei Wang, Xusheng Yang, Florian Vogel, Wei Li, Zhidan Lin, Peng Zhang
Summary: Metal organic frameworks (MOFs) have great potential in improving the performance of water treatment membranes. In this study, novel nanoparticles based on both nanoporous MOFs and organic PDA layer were used as dopants for PES ultrafiltration membranes. The resulting membranes showed enhanced permeability and anti-fouling properties, and demonstrated promising applications in oily sewage remediation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Xuehui You, Ming Wang, Guofei Jiang, Xiaodong Zhao, Zicheng Wang, Fang Liu, Chaocheng Zhao, Zehui Qiu, Ruiyu Zhao
Summary: In this study, a metal-free chlorine-sulphur double-doped graphitic carbon nitride (Cl/S-g-C3N4) photocatalyst was incorporated into a polyacrylonitrile (PAN) nanofibrous membrane via electrospinning. The resulting membrane with a porous structure exhibited superior superhydrophilicity and superoleophobicity, enabling efficient separation (>98.0%) of various oil-in-water emulsions. After visible light irradiation, the membrane showed excellent self-cleaning properties, achieving up to 95% removal of contaminants in crude oil/water mixtures and actual oily wastewater. The porous structure increased the contact between contaminants/bacteria and reactive species, enhancing photodegradation and antibacterial properties, and providing high resistance to contamination.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Mingming Wu, Bin Xiang, Peng Mu, Jian Li
Summary: This study presents a facile and efficient method for constructing a performance-stabilized Janus membrane with superwettability and superoleophobicity/underwater superhydrophobicity or hydrophobicity/underoil superhydrophobicity. The Janus membrane showed excellent separation performance, cycling stability, and chemical stability, making it suitable for various applications such as oil-water separation, osmotic gasification, and seawater desalination.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Feng Shijie, Zhao Jiefeng, Gao Yunling, Yun Junxian
Summary: A superhydrophilic/underwater superoleophobic CaCO3@PDA@nylon nanocomposite membrane was prepared by a simple dip-coating method. The modified membrane showed highly efficient oil-in-water emulsion separation performance and demonstrated high permeation flux and good regeneration ability. The study provided a simple and environmentally friendly method for the separation of high oil concentration oil-in-water emulsions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Jialong Chai, Guilong Wang, Aimin Zhang, Xinyang Li, Zhaorui Xu, Jinchuan Zhao, Guoqun Zhao
Summary: In the face of severe pollution in modern industry, membrane separation is widely used for cost-effective treatment of wasted solvents. However, the poor processability of microporous polytetrafluoroethylene (PTFE) membranes poses challenges for waste separation. This study proposes an innovative in-situ fibrillation methodology to prepare PTFE nanofibrous membranes with high porosity, fine pore size, and thin thickness. These membranes exhibit outstanding mechanical properties, chemical resistance, and anti-fouling behavior, making them suitable for fast separation or filtration in harsh solvents. The study achieves high separation efficiency and permeate fluxes driven by gravity and pressure, opening new avenues for the fabrication of robust and anticorrosive PTFE nanofibrous membranes with high separation efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Xin Zhong, Zhiguang Guo
Summary: In this study, modified cottons were prepared using polydopamine and KH550, which endowed the cottons with superhydrophilic ability and achieved efficient oil-water separation. The modified cottons maintained high separation efficiency even after multiple cycles and abrasion experiments.
JOURNAL OF BIONIC ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Hui Li, Jianqiang Zhang, Shaopeng Gan, Xilu Liu, Lei Zhu, Fujun Xia, Xiaoming Luo, Qingzhong Xue
Summary: An oil-water separation membrane with bioinspired bubble-mediated antifouling strategy is developed to overcome the limitations of low surface energy and high viscosity of oil foulants. The membrane is superhydrophilic/superaerophobic and can catalyze hydrogen evolution, generating microbubbles that coalesce with the oil fouling and increase their buoyancy and warp their interface tension. The synergy of warped interface tension, increased buoyancy, and kinetic energy enables efficient dynamic antifouling and removal of solid sediment. The membrane maintains high flux in long-term oil-water and oil-sand-water emulsion separation, making it promising for treating industrial oily wastewater.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Coatings & Films
Dacheng Zhong, Xiaoyuan Wang, Jingjing Wang
Summary: A poly(vinyl alcohol)/silicon dioxide@polydopamine membrane was fabricated by green electrospinning and exhibited excellent oil/water separation performance due to its superhydrophilic and underwater superoleophobic properties.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Composites
Zhengfei Wu, Yi Wang, Liangliang Dong, Mingqing Chen, Dongjian Shi
Summary: In this study, Janus membranes with asymmetric wettability were fabricated using a facile polydopamine (PDA) controlled modification method. These membranes showed excellent separation selectivity and high permeability for various oil/water mixtures. The membranes exhibited good reusability and could be applied in complex oil/water separation systems.
COMPOSITES COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Yunpeng Yue, Yasuhito Mukai
Summary: In this study, a hierarchically structured polyacrylonitrile (PAN) nanofibrous membrane was fabricated and used for efficient separation of oil droplets from water. The membrane with a skin layer exhibited a separation ratio of over 99.4% and a permeation flux of 7,059 L m-2h-1 for surfactant-stabilized emulsions (SSEs). Long-term separation experiments demonstrated its continuous separation capability. These findings highlight the potential of hierarchically structured membrane for separating emulsions and suggest its promise for the industrial separation of oily wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
A. Kumar, K. Nayak, A. S. Muench, P. Uhlmann, A. Fery, B. P. Tripathi
Summary: Polydopamine and poly(MPC-co-GMA) were combined to create a robust zwitterionic antifouling surface, which exhibited superhydrophilic character and excellent performance in oil-water separation. The modified membrane showed high oil rejection and flux recovery rates, making it a promising solution for long-term water purification and separation applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Qimao Gan, Lu Elfa Peng, Zhe Yang, Peng-Fei Sun, Li Wang, Hao Guo, Chuyang Y. Tang
Summary: Surfactant-assisted interfacial polymerization (IP) has shown the potential to improve the performance of thin film composite polyamide membranes. In this study, we found that the surfactant Tween 80 can enhance membrane performance, even though it decreases amine diffusion. The enhanced performance is attributed to the stabilization of nanobubbles by the surfactant, which leads to the formation of enlarged nanovoids and reduced defects in the polyamide layer. Furthermore, the surfactant-assisted membranes also exhibit better antifouling performance.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qimao Gan, Chenyue Wu, Li Long, Lu Elfa Peng, Zhe Yang, Hao Guo, Chuyang Y. Tang
Summary: Surface roughness plays a crucial role in the fouling propensity of polyamide reverse osmosis (RO) membranes. Traditional belief suggests that rougher membranes experience more severe fouling, but this study found that a smooth membrane actually experienced more severe fouling due to uneven flux distribution caused by the funnel effect. In contrast, a rough membrane with nanovoids showed lower fouling propensity due to the regulated water transport pathway and increased effective filtration area. These findings provide fundamental insights into the role of surface roughness in membrane fouling.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Automation & Control Systems
Zhihong Yan, Ying Huang, Siew-Chong Tan, Chuyang Y. Tang, Shu Yuen Hui
Summary: In this article, a self-adaptive-step-size incremental-resistance MPPT technique is proposed to extract maximum power from RED stacks. It is simple and easy to implement, and realizes a balance between fast dynamic responses and small oscillations at a steady state. Various tests are conducted to validate the effectiveness of the proposed MPPT technique.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Chemical
Yaowen Hu, Fei Wang, Zhe Yang, Chuyang Y. Tang
Summary: Nanovoids in polyamide layers significantly influence the roughness structures and water permeance of thin film composite (TFC) reverse osmosis (RO) and nanofiltration (NF) membranes. This study investigates water transport behaviors in a polyamide layer with or without nanovoids through numerical simulations and also develops an analytical model to quantify the competition between substrate-induced unfavorable funnel effect and nanovoid-induced favorable multi-effects. The modeling results demonstrate that even tiny nanovoids can minimize water transport distance and enhance the membrane permeance by 1-2 orders of magnitude.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Yajie Ding, Nianxiang Qiu, Jianqiang Wang, Zhe Yang, Fu Liu, Chuyang Y. Tang
Summary: We report a membrane for oil-water separation with anomalous wettability constructed by sub-10 nm Tween 80 assembly on hydrophobic PVDF nanofibers, providing separate passageways for water and oil. Water freely passes through the membrane along the hydrophilic nanofiber surface, while emulsified oils are diverted beneath the ultra-thin hydrophilic layer and discharged as continuous macroscopic oil phase. After continuously filtering oil-in-water emulsions for 10 hours, the membrane showed stable permeate flux as high as 536 ± 40 L m-2 h-1 bar- 1. The conformation assembly of surfactants provides a new strategy for fabricating anti-fouling membranes for oil/water separation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Junxia Liu, Wei Fu, Xuri Yu, Haiyan Yang, Dongsheng Zhao, Zhihong Wang, Lin Wang, Xianhui Li, Chuyang Y. Tang
Summary: In membrane technology for water/wastewater treatment, the concepts of critical flux (J(C)) and limiting flux (J(L)) play important roles in stable flux duration. This study clarifies the relationship of J(C) and J(L) to metastable and long-term stable fluxes based on factors such as initial flux, energy barriers, and membrane characteristics. The results provide significant guidelines for fouling control strategies in the field of membrane design and operation optimization.
Article
Engineering, Environmental
Zhe Yang, Chenyue Wu, Chuyang Y. Tang
Summary: Developing ultra-permeable nanofiltration (UPNF) membranes has been a focus research area for NF-based water treatment. This study analyzes the potential benefits of UPNF membranes, including reducing energy consumption and enabling new process opportunities. The critical analysis of membrane development suggests that UPNF membranes have the potential for improved selectivity and antifouling performance. This perspective paper offers important insights for the future development of NF-based water treatment technology.
Article
Engineering, Environmental
Chu Zhou, Senlin Shao, Keying Xiong, Chuyang. Y. Y. Tang
Summary: Compared to a conventional membrane bioreactor (MBR) with a porous microfiltration (MF) membrane (MBRMF), a nanofiltration (NF)-based MBR (MBRNF) shows highly attractive features such as high permeate water quality. However, the practical applications of MBRNF are often hindered by the high driven pressures and severe membrane fouling.
ACS ES&T ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Xiaobin Yang, Yajie Wen, Yangxue Li, Linlin Yan, Chuyang Y. Tang, Jun Ma, Seth B. Darling, Lu Shao
Summary: This study reports a prebiotic-chemistry-inspired method to universally engineer a superhydrophilic hierarchical MnO2 nanocoating on polymeric membranes, providing exceptional catalytic cleaning ability. The mineralized membrane achieved in-situ cleaning triggered by hydrogen peroxide catalyst, resulting in a flux recovery rate of 99.8%. The mineralized membrane exhibited a 9-fold higher recovery compared to the unmineralized membrane.
ADVANCED MATERIALS
(2023)
Article
Engineering, Biomedical
Jingdong Rao, Xiaohui Mou, Yongyi Mo, Ho-Pan Bei, Li Wang, Chuyang Y. Tang, Kai-Hang Yiu, Zhilu Yang, Xin Zhao
Summary: Stenting is the primary treatment for vascular obstruction-related cardiovascular diseases, but it causes endothelial injury. The DA-Cu-Arg-Hep coating can effectively reconstruct the damaged endothelium and prevent thrombosis and restenosis.
Article
Engineering, Chemical
Peng-Fei Sun, Pulak Sarkar, Eun-Tae Yun, Jeong Hoon Lee, Chuyang Y. Tang, Hee-Deung Park
Summary: Biofouling is a critical issue in membrane-based water treatment processes. A thin-film nanocomposite membrane with a multilayer structure consisting of an MXene/CNT interlayer and a CNT back layer was fabricated to mitigate biofouling. The CNT back layer possessed superior antibiofilm properties and effectively prevented bacteria from entering the porous substrate, resulting in excellent resistance to biofouling.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Lingyue Zhang, Chuyang Y. Tang, Chu Tang, Huijing Wang, Jianchao Wang, Ruiying Li, Haopeng Feng, Dongbei Yue
Summary: This study investigates the use of superhydrophobic nanoparticles for the removal of surfactant-like contaminants in wastewater. A quantitative surface characterization method based on low-field nuclear magnetic resonance is employed to accurately characterize the nanoparticles. The results demonstrate that the superhydrophobic nanoparticles exhibit efficient and selective adsorption capacity by enhancing hydrophobic interactions. The study provides insights into the interaction mechanisms and offers a potential solution for the efficient removal of surfactant-like contaminants in complex wastewater matrices.
Article
Engineering, Chemical
Ke Jiang, Li Long, Lu Elfa Peng, Zhe Yang, Wenyu Liu, Dong-Myeong Shin, Chuyang Y. Tang
Summary: Polyamide structure and chemistry are crucial for the separation performance of thin-film composite nanofiltration membranes. By regulating reactive sites on monomers, the properties of polyamide and membrane performance can be precisely tailored, resulting in improved water permeance and solute selectivity. This study provides new insights into developing high-performance nanofiltration membranes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Li Wang, Meng Zhang, Yufei Shu, Qi Han, Beizhao Chen, Bei Liu, Zhongying Wang, Chuyang Y. Tang
Summary: This study presents a new approach for efficient and selective dye recovery from highly saline textile waters using Co-MOF nanosheet membranes. The membranes exhibit superior permeance and selectivity due to their precisely regulated in-plane pore sizes. The Co-MOF membranes have high selectivity for salts over dye and exhibit excellent pure water permeance and high rejection of dyes. The in-plane pores on the nanosheets are responsible for the remarkable permeability and selectivity of the membranes.
Article
Engineering, Chemical
Shuting Xu, Jiahuan Liu, Jianqiang Wang, Haibo Lin, Qiu Han, Fu Liu, Chuyang Y. Tang
Summary: This study presents a new method for preparing polyamide nanofiltration membranes with high permeability and selectivity by introducing guanidil into the reaction. The membranes exhibited excellent water permeance and rejection of Na2SO4, as well as outstanding anion sieving capability and tetracycline removal. This convenient and scalable preparation strategy holds great application potential in desalination and resource recovery.
JOURNAL OF MEMBRANE SCIENCE
(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)
