Article
Engineering, Chemical
Yifang Mi, Na Wang, Xingyu Fang, Jia Cao, Meng Tao, Zhihai Cao
Summary: The study prepared a self-cleaning NF membrane by incorporating CQD/TiO2 nanoparticles, enhancing membrane hydrophilicity and water flux, while maintaining high salt rejection and dye rejection rates. The NF membrane showed efficient degradation of dyes under visible light, stable self-cleaning performance during cyclic fouling-irradiation process, and minimal flux decline even after continuous fouling.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Yue Zong, Ruijun Zhang, Shanshan Gao, Hailin Chang, Bart Van der Bruggen, Jiayu Tian
Summary: An anti-drying NF membrane was successfully constructed on a PTFE MF substrate using a novel 3/2-IP interfacial polymerization strategy, resulting in the production of a defect-free polyamide film with nano-wrinkled structure. This membrane exhibits desiccation tolerance and desirable separation performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Yumin Sun, Hailiang Liu, Yang Qin, Xianshe Feng, Junyan Chen, Qinglin Huang, Changfa Xiao
Summary: In this study, a novel approach to preparing ultrathin polyamide nanofilms was proposed. By incorporating graphene quantum dots and piperazine into the reaction solution, the physicochemical structures of the nanofilms were tailored by adjusting the electrospray time and graphene quantum dots concentrations. The addition of graphene quantum dots significantly improved the separation performance of the resulting membrane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Jia Zheng Oor, Chi Siang Ong, Yong Zen Tan, Jia Wei Chew
Summary: A covalent organic framework (COF) - incorporated thin film composite (TFC) membrane was successfully fabricated by in-situ formation of benzene-1,3,5-tricarboxaldehyde (TFB) and graphene oxide (GO) in p-Cymene. The resulting PES-COF-GO membrane exhibited high solvent permeance and separation efficiency in organic solvents.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Yufan Hao, Na Yang, Longfei Zhang, Yao Fang, Yongli Sun, Bin Jiang, Luhong Zhang
Summary: In this study, a complex-dissociation regulated interfacial polymerization (CDRIP) strategy was proposed to prepare highly permeable polyamide-based (PA-based) nanofiltration (NF) membranes. By forming and dissociating complex on the membrane surface, the surface properties were adjusted and the mass transfer resistance was reduced, resulting in improved permeability of the NF membranes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
KunKai Ma, Xiaoshuang Li, Xianger Xia, Yezhen Chen, Zhenchao Luan, Hongyue Chu, Bing Geng, Mei Yan
Summary: Ionic liquids were used to improve the solubility of BPAF, and fluorinated polyarylester thin film composite membranes were synthesized on PAN base membranes using interfacial polymerization method. The addition of fluorinated monomer could regulate the surface morphology and roughness of TFC membranes. PAN-F-0.5 sample exhibited high permeance for methanol and showed excellent performance after continuous immersion in DMF for 90 days (room temperature) and 7 days (80 degrees C).
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Ju Bai, Wei Lai, Lili Gong, Luqi Xiao, Guosheng Wang, Linglong Shan, Shuangjiang Luo
Summary: A study proposed an ionic liquid regulating strategy to optimize the acid resistance membrane, improving the membrane permeance and selectivity by rearranging the interfacial polymerization process to achieve smaller and more porous membrane pores.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Qiao Liu, Narendra Basel, Lin Li, Nong Xu, Qiang Dong, Long Fan, Qing Wang, Aiqin Ding, Tonghua Wang
Summary: The influences of the pore structure, microtopography, and chemical structure of support membranes on the structure and performance of the COF composite membranes were studied. The TiO2@GO/PAN support membranes with hydrophilic and smooth top surface, homogenous pore distribution, and large pore size enabled easy infiltration of aqueous-phase solutions and the formation of a stable interface. The COF composite membranes exhibited excellent filtration performance with a thin crystalline layer on the support membrane.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Lan-Qian Li, Yong-Jian Tang, Zhen-Liang Xu
Summary: This study presents a new approach for preparing high-performance NF membrane with good chemical stability using ultra-low concentration monomers. The newly prepared membrane showed comparable surface smoothness, pore size distribution, and desalination performance to lab-made and commercial PIP-TMC membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Dong Wang, Na Zhang, Jiaojiao Zhang, Yuyao Qin, Sen Wang, Chuyang Y. Tang, Zhining Wang
Summary: This study presents a simple and versatile method to prepare novel polyamide nanofiltration membranes via a hydrogel-assisted interfacial polymerization process. The diffusion of piperazine was precisely controlled by adjusting the hydrogel composition and crosslinking degree, resulting in the formation of a thin film composite membrane with improved water permeance and Na2SO4 rejection due to the synergistic effect of decreased thickness and improved surface hydrophilicity.
Article
Engineering, Chemical
Zhe Zhai, Xiao Wang, Yan Huang, Hao Yang, Yuchao Zhao
Summary: In this study, a surfactant-plasticizer-synergy (SPS) assisted fabrication strategy is proposed to create a high-performance polyethyleneimine (PEI) based nanofiltration (NF) membrane. The addition of surfactant SDS and plasticizer ATBC promotes the diffusion of PEI monomer, creating a positively charged membrane surface that improves the rejection of positive ions. Additionally, the plasticizer ATBC softens the polyamide film, enhancing flexibility and water transport. Compared to the original PEI-TPC membrane, the SPS-assisted membrane shows significantly higher permeance and rejection rates for various heavy metal ions. This strategy offers a simple and cost-effective approach for the fabrication of high-performance thin-film composite (TFC) membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Xinyu Fu, Jianqiang Wang, Yingyao He, Yanli Ji, Qiuyan Bi, Xiao Wang, Fu Liu
Summary: A nanofiltration membrane with an asymmetric polyamide dual-layer was prepared by interfacial polymerization. The thin and dense top polyamide layer enabled high water permeability and Na2SO4 rejection performance, while the thick and porous bottom polyamide layer guaranteed membrane stability. This study offers a promising strategy for fabricating polyamide composite membranes with enhanced separation performance.
Article
Engineering, Chemical
Ying Mei, Zhe Yang, Peng-Fei Sun, Shenghua Zhou, Hao Guo, Lu Elfa Peng, Zhikan Yao, Wulin Yang, Chuyang Y. Tang
Summary: We proposed a facile method of using polyelectrolyte additive to tune interfacial polymerization reaction and tailor polyamide NF membrane with better separation performance and lower bio-fouling potential for groundwater treatment. The fabricated TFC-P6 membrane possessed enhanced water permeance and better selectivity which can be beneficial to achieve higher water recovery compared to the control TFC membrane. In addition, the TFC-P6 membrane demonstrated enhanced rejection of perfluorooctane sulfonate and the biofouling was inhibited by its additional negative charge and smoother surface.
Article
Nanoscience & Nanotechnology
Gheorghe Falca, Valentina E. Musteata, Stefan Chisca, Mohamed Nejib Hedhili, Chisiang Ong, Suzana P. Nunes
Summary: Membrane nanofiltration technology is widely used in pharmaceutical, chemical, and food industries for separating valuable products and recovering solvents. There is a need for greener membrane fabrication methods to ensure environmental friendliness and reduce emissions of volatile solvents during production. Researchers are proposing the use of environmentally friendly solvents and methods to improve membrane preparation processes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
Hongbin Zhang, Yuhao Chen, Sihui Tang, Haixiang Sun, Peng Li, Yingfei Hou, Q. Jason Niu
Summary: This study presents a new strategy to modulate the interfacial polymerization process, leading to improved performance of nanofiltration membranes. By depositing an interlayer and controlling the reaction using by-products, a thinner and less defective separation layer was obtained, resulting in significantly increased permeance of the membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Rongrong He, Shenzhen Cong, Donglai Peng, Yatao Zhang, Meixia Shan, Junyong Zhu, Jing Wang, Jorge Gascon
Summary: In this study, the modification of MOF filler via dopamine polymerization greatly improved the interfacial compatibility between polymer and MOF, resulting in membranes with outstanding separation performance and long-term stability.
Review
Environmental Sciences
Tingting Zhu, Xin Li, Xuewu Zhu, Bin Liu, Junyong Zhu, Jianquan Luo
Summary: This review explores the application of the integration of nanofiltration with catalysis for micropollutant removal. By developing catalytic coupled nanofiltration systems and catalytic nanofiltration membranes, issues such as poor selectivity of low-molecular-weight micropollutants, membrane fouling, and tradeoff limitations are addressed. The underlying principles and performance of these technologies were discussed, along with the innovation and preparation strategies for catalytic membrane materials. The prospects and challenges of catalysis-assisted nanofiltration for micropollutant removal are also highlighted.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Aiwen Zhang, Junyong Zhu, Shuangqiao Han, Yatao Zhang, Bart Van der Bruggen
Summary: By using amino-piperidine as a new building block that interfacially polymerizes with trimesoyl chlorides, high-performance thin film composite membranes were fabricated. These membranes have high hydrophilicity, electronegativity, and moderate crosslinking degree. The pore apertures and free volume elements of the membranes can be finely tuned by varying the monomer concentrations and introducing alkane bond length. The membranes exhibit excellent water permeability and sieving capability for antibiotics.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Shuangqiao Han, Wenhui You, Shihao Lv, Chaojun Du, Xiang Zhang, En Zhang, Junyong Zhu, Yatao Zhang
Summary: In this study, advanced Thin-film nanocomposite (TFN) nanofiltration membranes were fabricated using microporous materials. The addition of tetrakis(hydroxymethyl) phosphonium chloride (THPC)-modified COF nanosheets as an intermediate layer significantly improved the separation performance of the membranes. The high hydrophilicity and dispersion of the IL@COF-367 nanosheets in the aqueous phase allowed for uniform distribution of amine monomers and slowed down their diffusion towards the organic interface, resulting in a high-performance TFN membrane with enhanced permeability and rejection properties.
Article
Engineering, Chemical
Shaochong Cao, Aiwen Zhang, Miaomiao Tian, Yuanli Jiang, Guanying Dong, Yatao Zhang, Junyong Zhu
Summary: In this study, new PEA-based TFC membranes were constructed using amino-alcohol monomers and trimesoyl chloride. The THAM monomers with higher hydrophilicity and more negative charges resulted in TFC membranes with larger pore sizes, exhibiting high water permeability and superior salt rejection.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Shaochong Cao, Dongyang Li, Adam A. Uliana, Yuanli Jiang, Junyong Zhu, Yatao Zhang, Bart Van der Bruggen
Summary: This study demonstrates a new recovery method using a bipyridine-based adsorptive membrane (AM) made of covalent organic frameworks (COFs) for the selective recovery of palladium. It shows that the method can evenly enrich palladium nanoparticles within a COF nanofilm, resulting in high catalytic activity and ultra-high water permeability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Chemical
Shushan Yuan, Zhaohuan Mai, Zhao Yang, Pengrui Jin, Gang Zhang, Junyong Zhu, Hideto Matsuyama, Bart Van der Bruggen
Summary: A novel block copolymer, polyarylene sulfide sulfone/amide tertiary amine (PASS/ATA), with adjustable and uniform pores was designed for membrane fabrication. By oxidizing the groups in the molecular chains, the pore size of the membranes was narrowed down, improving dye rejection and enabling various separations including ultrafiltration, nanofiltration, and organic solvent nanofiltration.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Danhua Wang, Miaomiao Tian, Shuangqiao Han, Kai Ding, Liya Yin, Junyong Zhu, Yatao Zhang, Li Han
Summary: In this study, nanosized AlPO-5 crystals were synthesized and used as functional fillers to construct thin-film nanocomposite membranes. The introduction of AlPO-5 not only increased the surface roughness of the membranes, but also reduced the thickness of the polyamide layer. This study highlights the usage of hierarchical zeolite molecular sieves for fabricating high-permeable polyamide membranes to enhance nanofiltration performance.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yiming Zhang, Kai Sheng, Zheng Wang, Wenjia Wu, Ben Hang Yin, Junyong Zhu, Yatao Zhang
Summary: A scalable and easy dip-coating method was used to create a thin CO2-selection layer of Pebax/PEGDA-MXene on a hollow fiber PVDF substrate. The interlayer spacing of the MXene stacks in the coating was designed to be 3.59 angstrom, allowing efficient separation of CO2 from N2 and CH4. CO2-philic nanodomains were constructed in the layer to enhance CO2 affinity, while non-CO2-philic nanodomains promoted CO2 transport. The membrane showed excellent separation performance, surpassing the 2008 Robeson upper bounds limitation.
Article
Engineering, Chemical
Zhipeng Liao, Yuwei Wu, Shaochong Cao, Suchan Zhao, Xingyu Yan, Sujuan Yuan, Kai Dong, Juan Qin, Changjin Ou, Junyong Zhu
Summary: In this study, phosphomolybdic acid (PMo12) was used as a functional additive to fabricate poly (ether sulfone) (PES) based composite ultrafiltration membranes. The introduction of PMo12 resulted in increased surface pore density, porosity, and selective layer thickness, as well as enhanced hydrophilicity and charge property, leading to significantly improved filtration performance and anti-fouling properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Kai Sheng, Miaomiao Tian, Junyong Zhu, Yatao Zhang, Bart van der Bruggen
Summary: Solar-driven interfacial evaporation using wood-based evaporators with chemically stable coordination polymers (Ni-DTA) as photothermal nanomaterials can efficiently capture freshwater from nontraditional water sources. The wood-based evaporators possess a hierarchical porous structure and mechanical stability. The in situ synthesis of Ni-DTA onto the channel wall of balsa wood provides sufficient photothermal domains that enhance interfacial evaporation.
Article
Engineering, Chemical
Ruijun Zhang, Qianzhi Sun, Jiayu Tian, Bart Van der Bruggen, Junyong Zhu
Summary: The unique sieving capability of nanofiltration (NF) technology has played an important role in water or organic solvent purification. Polyamide (PA) thin film composite (TFC) NF membranes (PA-TFC-NF) have dominated research and applications in NF technology due to easy manufacturing method and acceptable permeability/selectivity. However, non-polyamide NF membranes (NPA-NF) have also made great progress in terms of anti-fouling ability, durability, chemical stability, and extreme pH resistance. This review classifies NPA-NF membranes into six categories and discusses their fabrication mechanism, material performance, advantages and disadvantages, as well as current challenges and future prospects.
Article
Engineering, Chemical
Xiao Deng, Zhaohuan Mai, Haohan Wan, Junyong Zhu, Hideto Matsuyama, Shushan Yuan, Gang Zhang, Xiujing Xing, Bart Van der Bruggen
Summary: A novel and facile route to fabricate functional membranes with reversibly tunable and highly efficient filtration performance was developed by introducing amine oxide units in poly(arylene ether sulfone)/amide tertiary amine (PAES/ATA) copolymer. The smart membranes could be reversibly tuned between loose nanofiltration mode and ultrafiltration mode by cyclic acid-alkali treatment. This study provides a new approach for developing polymer membranes with switchable pores for multiple separation processes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Guangming Yan, Haoran Lu, Shushan Yuan, Xiao Deng, Junyong Zhu, Gang Zhang
Summary: A new category of copolymer, PES/ATA, was synthesized by grafting tertiary amines on polyaryl ether sulfone. These copolymers displayed excellent thermal properties and were used to fabricate ultrafiltration membranes. The filtration performance of these membranes could be reversibly tuned between acid oxidation and alkali treatment, allowing for adjustable water flux and improved rejection of methylene blue. The introduction of reactive TA units in the membranes enabled the reversible change of charge and adjustment of membrane pore size. In addition, the mechanical properties of these membranes remained unchanged after multiple treatment cycles. This study provides a novel and convenient method to fabricate functional membranes with reversible-tunable filtration properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Xiaoqing Chang, Haiyan Guo, Qishuo Chang, Zhihong Tian, Yanwu Zhang, Dongyang Li, Jing Wang, Yatao Zhang
Summary: In this study, TD-COF and dopamine modified TD-COF were incorporated into PIM-1 membrane to fabricate MMMs, which improved the CO2/N2 separation performance. The long-range ordered channels of TD-COF and CO2 affinity sites of dopamine enhanced the CO2 permeability, resulting in a remarkable increase in CO2/N2 selectivity. The MMMs also exhibited decent plasticization resistance and long-term operational stability.
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)