Article
Polymer Science
Shiyang Zhang, Xiaochuang Lu, Mingwei Cai, Zhi Wang, Zhenjing Han, Zhiyin Chen, Rongtao Liu, Kaixin Li, Yonggang Min
Summary: Introducing nano-attapulgite into polyimide membranes can significantly improve gas permeability without affecting gas selectivity. The polyimide/ATP composite membrane, with its high permeability and designability, has great potential in the gas separation industry.
Article
Engineering, Chemical
Mengjie Hou, Lin Li, Jing Song, Ruisong Xu, Zilong He, Yunhua Lu, Zonglin Pan, Chengwen Song, Tonghua Wang
Summary: A novel polyimide precursor was synthesized to fabricate carbon molecular sieve membranes for hydrogen purification, and the membrane's hydrogen separation performance was optimized by adjusting the pyrolysis temperature. The CMSM derived at high pyrolysis temperature showed low carbon structural densification and excellent H2 selectivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Polymer Science
Zeljka P. Madzarevic, Beatriz Seoane, Jorge Gascon, Maruti Hegde, Theo J. Dingemans
Summary: A series of membranes based on non-linear all-aromatic polyimides were investigated to understand how their backbone geometry and local electrostatics influence gas transport and CO2/CH4 separation ability. The results showed that the non-linear backbone geometry promotes CO2 permeability, while the presence of an electrostatic dipole moment associated with the 1,3,4-oxadiazole heterocycle governs CO2/CH4 separation selectivity.
Article
Engineering, Chemical
Mengjie Hou, Lin Li, Jing Song, Ruisong Xu, Zilong He, Yunhua Lu, Zonglin Pan, Chengwen Song, Tonghua Wang
Summary: The hydrogen-based economy is considered a potential solution for energy security and sustainability in the future. The demand for high-purity hydrogen has led to the development of hydrogen purification technologies. A novel polyimide was synthesized and used for fabricating carbon molecular sieve membranes (CMSMs) for hydrogen purification. The pyrolysis temperature was optimized to enhance the H-2 separation performance of the membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
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
Engineering, Chemical
Beibei Zhang, Jie Qiao, Chenxi Dong, Chunhai Yi, Suitao Qi, Bolun Yang
Summary: The introduction of crown ether into the polymeric backbone can enhance the chains packing density, reducing d-spacing and accessible fractional free volume. The membrane showed typical molecular sieving separation mechanism with permeabilities in the order of He > H-2 > CO2 > N-2 > CH4. Incorporation of DB21C7 improved diffusion selectivity and solubility selectivity, leading to significant selectivity increases in various gas pairs compared to non-crown ether contained polyimide membrane. Membrane material design for high purity gas requirement may benefit from introducing crown ether moiety into the polymeric backbone.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Wen He, Jingcheng Du, Linghao Liu, Qian Sun, Ziye Song, Ji Ma, Dong Cao, Weiwang Lim, Shabi Ul Hassan, Jiangtao Liu
Summary: Graphene oxide (GO) tuned polyimide carbon molecular sieve (CMS) membranes were prepared by carbonization, showing high permeability, selectivity, and stability. The gas sorption capability increased with the carbonization temperature, creating more micropores under higher temperatures under GO guidance. GO guidance and subsequent carbonization enhanced H-2 permeability and selectivity, surpassing state-of-the-art materials. The CMS membranes transitioned from a polymeric structure to a denser graphite structure with increasing carbonization temperature, achieving ultrahigh selectivities for various gas pairs while maintaining moderate H-2 gas permeabilities.
Article
Engineering, Chemical
Ki Jung Kim, Yunmi Chae, Seong Jin An, Jin Hui Jo, Sungmin Park, Won Seok Chi
Summary: This study investigates microphase-separated structured PI-POEM graft copolymer membranes, which have controllable POEM concentrations and the ability to modify material properties. The results show that PI-POEM graft copolymer membranes exhibit high CO2 affinity and separation performance, making them promising for CO2 separation processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Shanshan Wu, Jiachen Liang, Yapeng Shi, Menghui Huang, Xiangyu Bi, Zhenggong Wang, Jian Jin
Summary: In this study, a strong hydrogen bond among polymer chains of 6FDA-durene polyimide (Du-PI) membranes was designed by introducing isophthalic dihydrazide (IPD) molecules as a cross-linker, which significantly increased the membrane's mechanical strength, anti-plasticization property, and gas permselectivity. The use of IPD as a cross-linker was shown to be a facile and effective strategy to enhance the inter-polymer chain interaction and improve membrane stability in a mild way.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Polymer Science
Si Li, Hannah McGinness, Tao Wang, Ruilan Guo
Summary: This study focuses on preparing a series of crosslinked Matrimid (R)-like films with varied crosslink density, leading to enhanced permeability and selectivity for gas separations. Introducing bulky groups at crosslink sites is found to counteract densification effect induced by crosslinking, demonstrating a fundamentally new strategy for regulating the microstructure and properties of crosslinked membranes.
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
Guolong Huo, Zhiyong Guo, Zhiguang Zhang, Xiaowei Zhou, Junhao Xin, Yuchen Zhang, Shuanyan Kang, Yanqin Yang, Nanwen Li
Summary: Fine-tuning of the physical stacking structure by stretching processing improves the aging resistance and gas separation performance of microporous polyimide membranes. The stretched membranes show improved mechanical and thermal stability, as well as higher gas perm-selectivity and better gas permeability retention rate after aging.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Zhiguang Zhang, Xiaolong Ren, Guolong Huo, Shuanyan Kang, Zhenggong Wang, Nanwen Li
Summary: In this study, carboxylic groups were introduced into a fluorinated polyimide (6FDA-TFMB) to enhance the chain segment rigidity and improve the polymer chain arrangement. The inter-chain cavity of the fluorinated polyimide could be finely tuned by adjusting the molar ratio of TFMB and DABA in the copolyimide. The resulting copolyimide membranes demonstrated tunable gas permeation properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Polymer Science
Yuxuan Feng, Jizhong Ren, Hui Li, Dan Zhao, Lujie Sheng, Yongdong Wu, Wenyuan Zhao, Maicun Deng
Summary: This study investigated the effects of thermal annealing on gas separation performance of two 6FDA-DETDA/DMMDA block polyimide membranes with different block lengths at three temperatures. The results showed that the 350 degrees C annealing significantly enhanced the gas separation performance of the membranes.
Article
Engineering, Chemical
Can Wang, Zhili Cai, Wei Xie, Yang Jiao, Lu Liu, Lili Gong, Qi-Wei Zhang, Xiaohua Ma, Hongjun Zhang, Shuangjiang Luo
Summary: This study reports a new series of dual thermally crosslinkable polyimide membranes with excellent plasticization resistance and hierarchical microcavity size distribution. The gas transport properties of the crosslinked membranes can be tuned through chemical compositions and thermal treatment procedures.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Patrick Bongartz, Tobias Karmainski, Moritz Meyer, John Linkhorst, Till Tiso, Lars M. Blank, Matthias Wessling
Summary: Bioreactors play a crucial role in the production of biopharmaceuticals, biomaterials, and sustainable substitutes for chemicals. However, the traditional aeration technique used in bioreactors has limitations such as shear stress, foaming, and sterility concerns. This study presents a membrane stirrer (MemStir) that combines simulations and experiments, providing efficient bubble-free aeration. The MemStir demonstrated excellent performance in a foam-free recombinant production process, delivering high oxygen transfer rates and demonstrating its potential for various applications including animal cell cultivation.
BIOTECHNOLOGY AND BIOENGINEERING
(2023)
Article
Electrochemistry
Korcan Percin, Jonas Hereijgers, Nicolas Mulandi, Tom Breugelmans, Matthias Wessling
Summary: Complex geometries for electrodes pose a challenge in electrochemical applications. Slurry electrodes utilize complex flow distributors to enhance charge transfer between the current collector and slurry particles. In this study, titanium-based flow distributors produced by indirect 3D-printing were used to further improve electron transfer in vanadium redox flow applications. The titanium static mixers were coated with graphite to enhance activity for vanadium redox reactions. Heat treatment of the electrodes significantly improved anodic and cathodic current peaks, and testing in a redox flow cell showed discharge polarization of 110 mA cm(-2).
Article
Materials Science, Multidisciplinary
Lukas T. Hirschwald, Sebastian Brosch, Georg Linz, John Linkhorst, Matthias Wessling
Summary: Microfluidic systems offer advantages over classical techniques in biomedical and chemical research, allowing for rapid prototyping and parallelization on a laboratory scale. However, integrating membranes in microfluidics presents challenges in material development, membrane geometry, and integration. This study presents a durable method for anchoring free-form membranes to surfaces, enabling the fabrication of stable, multi-material microfluidic systems. The influence of membrane shape and porosity on performance indicators is also investigated, providing insights into microfluidic modules with incorporated membranes.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Green & Sustainable Science & Technology
Alexander Limper, Mojtaba Mohseni, Robert Keller, John Linkhorst, Juergen Klankermayer, Matthias Wessling
Summary: This study introduces a novel binder-free electrode, carbon nanofibers (CNFs), synthesized on nickel foam, which exhibits high electrochemical activity in generating hydrogen peroxide as well as efficient removal of micropollutants in water bodies.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Engineering, Chemical
Maik Tepper, Maria Padligur, Denis Wypysek, Laura Budeus, Jannis Mueller-Dott, Hannah Roth, Matthias Wessling
Summary: New hollow fiber membranes with helical ridges have been developed to increase mixing and counteract concentration polarization and fouling. These membranes are produced using a rotating needle spinneret and have reduced fiber diameter compared to previous versions. The helical ridges induce secondary flow, leading to improved mass transfer and significantly enhanced gas fluxes in gas-liquid membrane contactors.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Review
Urology & Nephrology
David Loureiro Ramada, Joost de Vries, Jeroen Vollenbroek, Nazia Noor, Odyl ter Beek, Silvia M. M. Mihaila, Fokko Wieringa, Rosalinde Masereeuw, Karin Gerritsen, Dimitrios Stamatialis
Summary: Haemodialysis is expensive and has limitations in removing uraemic solutes, causing poor patient quality of life and large carbon footprint. Innovative dialysis technologies, such as portable, wearable and implantable artificial kidney systems, are being developed to address these issues. Challenges include the need for continuous regeneration of dialysate and improving toxin removal. Efforts to overcome these challenges include developing dialysate recycling systems and novel membranes combined with bioartificial kidneys.
NATURE REVIEWS NEPHROLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jonas Baessler, Tamara Oliveira, Robert Keller, Matthias Wessling
Summary: In this study, the researchers replaced the energy-intensive oxygen evolution reaction with partial methanol oxidation, reducing the energy demand and producing high-value chemicals. They achieved high current efficiencies for formaldehyde and formic acid production through paired CO2 reduction with electrochemical methanol oxidation.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Tobias Harhues, Maria Padligur, Franziska Bertram, Daniel Matthias Roth, John Linkhorst, Andreas Jupke, Matthias Wessling, Robert Keller
Summary: The electrochemical conversion of hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) is demonstrated in this work, along with the biphasic dehydration of fructose to HMF. The integrated approach eliminates the need for intermediate purification as the HMF-rich phase is directly fed into the electrochemical reactor. The results show a promising synthesis process for green platform chemicals and provide insights into biphasic solutions in electrochemical conversions.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Lea Steinbeck, Dominik L. Braunmiller, Hanna J. M. Wolff, Vincent Huettche, Julia Wang, Matthias Wessling, Jerome J. Crassous, John Linkhorst
Summary: Complex-shaped microgels with active and remote orientational control have great potential in the field of soft metamaterials. This work introduces a method for spatio-temporal flow control using magnetically actuable microgels of complex shape, and demonstrates the concept in microfluidic impellers. The fabrication of these microgels is achieved through stop-flow lithography, and their magnetic response is comprehensively quantified. These complex-shaped microgels are then integrated as actuable impellers in a microfluidic chip, showcasing the versatility of the fabrication methodology.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Green & Sustainable Science & Technology
Matthias Hesselmann, Hannah Minten, Tristan Geissler, Robert Gregor Keller, Andre Bardow, Matthias Wessling
Summary: Electrolyzing carbon dioxide into valuable chemicals is a promising alternative to fossil fuel-based processes. Extensive research has focused on catalysis and electrode design, but the choice of ion exchange membrane for CO2 electrolysis from an economic perspective remains an important question. Holistic process optimization reveals that CO2 electrolysis using an anion exchange membrane achieves competitive production costs for CO, outperforming cation exchange and bipolar membranes. Contrary to common belief, the CO2 pumping effect does not significantly impact the economics and instead offers an efficient means of regenerating dissociated CO2.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Engineering, Environmental
Maike Wrobel, Stefanie Kriescher, Tilman Schiffer, Robert Keller, Matthias Wessling
Summary: Understanding and controlling the gas-liquid-solid interface at gas diffusion electrodes is a crucial challenge in electrochemical engineering. This study investigates the effect of high current densities on the wetting, flooding, and weeping of GDE through macroscopic experiments. The permeation of electrolyte provides valuable information about the composition inside the GDE.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Joao Faria, Sabbir Ahmed, Dimitrios Stamatialis, Marianne C. Verhaar, Rosalinde Masereeuw, Karin G. F. Gerritsen, Silvia M. Mihaila
Summary: Patients with end-stage kidney disease suffer from high levels of protein-bound uremic toxins. Conventional dialysis methods are ineffective in removing these toxins. A potential solution could be a bioartificial kidney composed of membranes with proximal tubule epithelial cells that actively secrete these toxins. However, the development of this bioartificial kidney is hampered by a lack of knowledge regarding the cytocompatibility of the dialysis fluid. This study shows that the dialysis fluid does not affect the viability or function of the cells, and efficiently clears the toxins from the perfusion fluid.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Chemical
Anna M. Kalde, Johannes Lohaus, Stephan Musholt, Matthias Wessling
Summary: This study systematically investigated the fouling and backwashing of anionic polystyrene particles in microfluidic structures with engineered surface charge and hydrophilicity. The results confirmed that increasing the hydrophilicity of the membrane can reduce fouling, but hydrophilicity alone is not a sufficient measure to predict particle deposition and removal behavior. Designing a hydrophilic membrane with an engineered surface charge is crucial for achieving a low-fouling membrane that can be cleaned effectively during backwashing with pure flow reversal.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Felix Stockmeier, Lucas Stuewe, Christian Kneppeck, Stephan Musholt, Katharina Albert, John Linkhorst, Matthias Wessling
Summary: In this study, the operational range of electro-driven processes was extended through reducing diffusion resistances and electroconvective mixing. A new membrane cell design and a high-speed microparticle tracking velocimetry setup were used to observe and quantify the 3D velocity field in a spacer-filled electrodialysis channel. The results showed the interplay between spacer-engineered hydrodynamics and electroconvection, and suggested that intentional regions of low flow velocity in the spacer design can maximize the use of electroconvection in the far overlimiting region.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Maria A. Restrepo, Johannes Kamp, Lasse Guericke, Robin Schnichels, Hannah Roth, Matthias Wessling
Summary: The modification of membranes using the Layer-by-Layer (LBL) method with polyelectrolytes has become advanced technology, but it is time consuming. This study explores a simpler one-step membrane modification using coating solutions containing both polyanions and polycations. Different coating methods are proposed: interfacial complexation (IC), diffusive desalination (DDS), and polyelectrolyte concentration (PC). The ability to produce nanofiltration membranes and in-situ functionalization of the membranes are evaluated. With PC, membranes with high MgCl 2 rejection and permeability are obtained.
JOURNAL OF MEMBRANE SCIENCE LETTERS
(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)
