Article
Chemistry, Physical
Carmelo Lo Vecchio, Xiang Lyu, Irene Gatto, Barr Zulevi, Alexey Serov, Vincenzo Baglio
Summary: This study aims to evaluate the performance of alkaline direct methanol fuel cells (ADMFCs) with commercial materials and establish a reference for comparing newly developed materials. Fe-N-C catalysts, Fumasep (FAA-3-50) based AEMs, and FAA3 based AEIs were used, and parameters such as operating temperature and methanol concentration were optimized. Electrochemical measurements showed that the best performance was achieved with 5 M methanol at 60 degrees C, demonstrating a remarkable power density of 48.2 mW cm-2. This work provides insights for the large-scale application of ADMFC with commercial PGM-free materials.
JOURNAL OF POWER SOURCES
(2023)
Article
Polymer Science
Carmelo Lo Vecchio, Alessandra Carbone, Irene Gatto, Vincenzo Baglio
Summary: This paper discusses the use of a commercial Fumasep((R)) FAA3-50 membrane as an anion exchange membrane (AEM) in alkaline direct methanol fuel cells (ADMFCs). The membrane is exchanged in chloride and hydroxide forms and its conductivity is measured in KOH solution and KOH/methanol mixture. AEM-DMFC tests are conducted and the results indicate that the Fumasep((R)) FAA3-50 membrane is a viable option for ADMFC application.
Article
Chemistry, Physical
Vicente Galvan, Bharat Shrimant, Chulsung Bae, G. K. Surya Prakash
Summary: In recent years, direct alkaline fuel cells have seen a rapid performance increase due to improvements in the anion exchange membrane and oxygen reduction reaction electrocatalysts. Research has shown that changing the cation structures of anion exchange ionomers plays a significant role in methanol oxidation reactions on PtRu/C catalysts. Additionally, the use of a poly(terphenylene) membrane and anode containing anion exchange ionomers can achieve high power densities with low catalyst loading.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Electrochemistry
Enrico Berretti, Luigi Osmieri, Vincenzo Baglio, Hamish A. Miller, Jonathan Filippi, Francesco Vizza, Monica Santamaria, Stefania Specchia, Carlo Santoro, Alessandro Lavacchi
Summary: In the last two decades, extensive research has been conducted on direct alcohol fuel cells (DAFCs) as potential on-demand power sources. Two leading technologies, proton exchange membranes (PEMs) and anion exchange membranes (AEMs), have emerged for acidic and alkaline DAFCs respectively. This review analyzes the current state-of-the-art in acidic and alkaline DAFCs using methanol and ethanol as fuels, with a focus on the effect of reaction stoichiometry. It highlights the participation of hydroxyl ions (OH-) and the presence of anions as alcohol oxidation products in alkaline systems, which are important considerations for fuel design and energy evaluation from a whole system perspective.
ELECTROCHEMICAL ENERGY REVIEWS
(2023)
Article
Chemistry, Physical
Aiswarya K. Sidharthan, Shiny Joseph
Summary: A sustainable approach for synthesizing a sodium ion conducting cation exchange membrane was investigated in this study, addressing the issues of methanol permeability, ionic conductivity, and cost of the direct methanol fuel cell (DMFC). The use of polyvinyl alcohol (PVA) and sulfonated polyvinyl alcohol (SPVA)-montmorillonite clay (MMT) membranes in an alkaline medium improved the ionic conductivity and achieved a high peak power density in passive alkaline DMFC experiments.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
K. Aiswarya Sidharthan, Shiny Joseph
Summary: This study synthesized a polyvinyl alcohol-based sodium ion conducting membrane working in an alkaline medium and compared its performance with other types of membranes in direct methanol fuel cells. The results showed that the polyvinyl alcohol-titanium dioxide membrane has a higher power density in alkaline environments.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Engineering, Environmental
Guoliang Liu, Ailian Wang, Wenxi Ji, Fangfang Zhang, Jianing Wu, Taoyi Zhang, Haolin Tang, Haining Zhang
Summary: The in situ crosslinking side reaction is ingeniously controlled during the preparation of quaternized polybenzimidazole (PBI) based anion exchange membranes (AEMs) to achieve a balance between mechanical properties and ionic conductivity. The results show that the in situ crosslinking reaction is easy to occur and has better crosslinking effect than traditional strategies. Additionally, the in situ crosslinking greatly improves the mechanical properties of quaternized PBI membranes and ensures reasonable hydroxide conduction. Rating: 7 points.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Chuan Hu, Na Yoon Kang, Hyun Woo Kang, Ju Yeon Lee, Xiaohua Zhang, Yong Jun Lee, Seung Won Jung, Jong Hyeong Park, Myeong-Geun Kim, Sung Jong Yoo, So Young Lee, Chi Hoon Park, Young Moo Lee
Summary: Researchers have developed a new type of polymer electrolyte for alkaline energy conversion devices using highly rigid triptycene as a branching agent. The electrolyte exhibits excellent conductivity, mechanical properties, anti-swelling ability, and alkaline stability. Fuel cells and water electrolyzers based on this electrolyte demonstrate promising performance, indicating wide application potential.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Iris Agami, Nansi Gjineci, Songlin Li, Simcha Srebnik, Dario R. Dekel, Charles E. Diesendruck
Summary: In recent years, the development of anion-exchange membranes (AEMs) for anion-exchange membrane fuel cell (AEMFC) applications has been rapidly growing due to their numerous advantages over mainstream proton-exchange membrane fuel cells. However, a major challenge in the development of practical AEMs is the low chemical stability of the AEM quaternary ammonium (QA) functional groups in the strongly alkaline and dry environment during AEMFC operation. This study investigates the impact of polymer chain folding on the chemical stability of the QA groups and finds that folded chains exhibit significantly improved stability compared to linear chains, providing a simple method for preparing chemically stable AEMs with different QA groups and polymer backbones.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Andrea Fernandez-Nieto, Sagrario Munoz, Vicenta Maria Barragan
Summary: This study compared different anion exchange membranes for their performance as an electrolyte in alkaline direct alcohol fuel cells and found that doping conditions have a significant impact on membrane alcohol permeability.
Article
Engineering, Chemical
Xu Hu, Minghui Liu, Yingda Huang, Lei Liu, Nanwen Li
Summary: Polybenzimidazole (PBI)-based ion-solvating membranes (ISM) with sulfonate-grafted poly (2,2'-(1,4-naphthalene)-5,5 '-benzimidazole) (NPBI) were designed and evaluated for alkaline water electrolysis (AWE). The introduction of sulfonate side chains enhanced the absorption of KOH, increased hydroxide conductivity, and reduced H-2 permeability. The modified membrane showed good stability and higher AWE performance compared to the unmodified membrane.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Chemistry, Physical
Hari Gopi Kuppusamy, Prabhakaran Dhanasekaran, Niluroutu Nagaraju, Maniprakundil Neeshma, Baskaran Mohan Dass, Vishal M. Dhavale, Sreekuttan M. Unni, Santoshkumar D. Bhat
Summary: This review provides an in-depth analysis of the recent advances in solid anion exchange membranes (AEM) and their viability in alkaline polymer electrolyte fuel cells (APEFC). The mechanical and thermal stability of AEMs are determined by the characteristics of the polymer matrix, while the anionic groups govern the anion exchange capacity, transport number, and conductivities. The review emphasizes the radiation grafting of monomers and chemical modifications to introduce cationic charges, and highlights the recent synthesis advancements in AEMs from various polymers. Overall, this review offers a comprehensive understanding of AEMs and their potential applications in APEFC.
Article
Biochemistry & Molecular Biology
Masa Hren, Michaela Roschger, Viktor Hacker, Bostjan Genorio, Darinka Fakin, Selestina Gorgieva
Summary: The addition of cellulose nanofibrils and quaternized cellulose nanofibrils can significantly enhance the performance of polysaccharide anion exchange membranes, including mechanical properties and ionic conductivity, leading to excellent performance in alkaline direct ethanol fuel cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Green & Sustainable Science & Technology
Bo-Qiang Miao, Ya-Chong Liu, Yu Ding, Pu-Jun Jin, Pei Chen, Yu Chen
Summary: In this study, high-quality chlorine-free Rh nanodendrites (Rh-NDs) were successfully synthesized by a simple one-step chemical-reduction method. Rh-NDs exhibited high electroactivity for methanol oxidation reaction (MOR) in alkaline direct methanol fuel cells. Under optimal experimental conditions, Rh-NDs showed a significant enhancement in electroactivity and durability for MOR compared to irregular Rh nanocrystals, thanks to their dendritic morphology that provides a large specific surface area, rich corner/edge atoms, and efficient aggregation inhibition.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2022)
Article
Engineering, Chemical
Yifan Xia, Sinu C. Rajappan, Dmytro Serhiichuk, Mikkel Rykaer Kraglund, Jens Oluf Jensen, David Aili
Summary: A series of poly(vinyl alcohol-co-vinyl acetal) gel electrolytes were prepared and assessed for their performance as electrode separators in alkaline water electrolysis. The membrane properties could be tuned by varying the degree of functionalization, and a membrane with moderate vinyl acetal content showed good mechanical robustness and ion conductivity. The membrane effectively prevented hydrogen crossover during alkaline water electrolysis tests. The strategies presented in this work have general relevance to the field for the development of new ion-solvating membrane systems.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Feifei Zhang, Yinlong Zhu, Cheng Tang, Yu Chen, Binbin Qian, Zhiwei Hu, Yu-Chung Chang, Chih-Wen Pao, Qian Lin, Seyedeh Alieh Kazemi, Yun Wang, Lian Zhang, Xiwang Zhang, Huanting Wang
Summary: A new type of W SAC with unique local structure was designed and prepared, showing excellent performance in electrochemical ORR, particularly in terms of H2O2 selectivity and operational durability. The findings open up new opportunities for developing high-performance W-based catalysts for electrochemical H2O2 production.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sixuan She, Yinlong Zhu, Xinhao Wu, Zhiwei Hu, Abhijeet Shelke, Way-Faung Pong, Yubo Chen, Yufei Song, Mingzhuang Liang, Chien-Te Chen, Huanting Wang, Wei Zhou, Zongping Shao
Summary: This study introduces an Fe-rich Sr0.95Ce0.05Fe0.9Ni0.1O3-delta (SCFN) perovskite oxide with minor Ce/Ni co-doping as a high-performance OER electrocatalyst. SCFN exhibits significantly enhanced mass-specific activity compared to the parent oxide and demonstrates excellent operational durability under alkaline OER conditions, making it a promising and universal strategy for improving Fe-based perovskite oxides.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Wen Ji, Xianbiao Wang, Tianqi Ding, Soufian Chakir, Yongfei Xu, Xianhuai Huang, Huanting Wang
Summary: This study successfully prepared a nylon-6@UiO-66-NH2 fiber membrane and demonstrated its significant performance in Cr(VI) removal. The unique structure of the fiber membrane allows for selective adsorption and photocatalytic reduction of Cr(VI), leading to improved efficiency in Cr(VI) removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Xingya Li, Gengping Jiang, Meipeng Jian, Chen Zhao, Jue Hou, Aaron W. W. Thornton, Xinyi Zhang, Jefferson Zhe Liu, Benny D. D. Freeman, Huanting Wang, Lei Jiang, Huacheng Zhang
Summary: In this study, a strategy for fabricating angstrom-scale ion channels through the growth of metal-organic frameworks (MOFs) into nanochannels is reported. These nanochannels exhibit higher ion conductivity and mobility than MOF channels with hybrid pore configurations and sizes. Furthermore, the three-dimensional (3D) MOF channels demonstrate better ion sieving properties compared to one-dimensional (1D) and two-dimensional (2D) MOF channels. This research provides a platform for studying ion transport properties at angstrom-scale confinement and offers guidelines for improving ionic separations and nanofluidics efficiency.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yuqi Wang, Xishun Hao, Yuan Kang, Mengyang Dong, Zhou Fang, Yue Hu, Huanting Wang, Xiulin Fan, Youguo Yan, Zhizhen Ye, Xinsheng Peng
Summary: Understanding the ion transport in concentrated electrolytes is important. This study demonstrates an enhanced ion transport of water-in-salt (WIS) electrolytes in 2D nanochannel membranes. The mechanism involves a stratification process induced by functional groups, where a free anion layer moves between two continuous water-cation layers. Lithium-ion batteries with this confined electrolyte showed improved capacity and coulombic efficiency. This work provides new insights into the ion transport mechanism in nanoconfined concentrated electrolytes and offers strategies for designing high-performance and safe electrolytes for energy and environmental devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Xing Wu, Junyang Zhang, Huanting Wang, Yuning Huo, Zongli Xie
Summary: A new type of graphene oxide (GO)-based mixed-dimensional membrane, assembled with two-dimensional GO nanosheets and zero-dimensional copper(I) oxide-incorporated titanium dioxide photocatalyst (CT), is developed. The CT/GO membranes exhibit superior antifouling properties, high water permeance, and improved selectivity to dye molecules. In addition, the embedded photocatalysts enhance the antibacterial activity and organic dye degradation performance under visible light irradiation. This study provides a promising solution to enhance the nanofiltration performance and antibacterial properties of GO membranes for practical applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Editorial Material
Engineering, Chemical
Phillip E. Savage, Linda J. Broadbelt, Marianthi Ierapetritou, Bo-Geng Li, Massimo Morbidelli, Tina M. Nenoff, Ashwin W. Patwardhan, Aaron Scurto, Huanting Wang
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Editorial Material
Chemistry, Physical
Jun Lu, Huanting Wang
Summary: A high ligand/metal ion concentration ratio strategy eliminates lattice defects in polycrystalline zirconium metal-organic framework membranes, enhancing their molecular sieving performance.
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
Chemistry, Multidisciplinary
Chen Zhao, Jue Hou, Matthew Hill, Benny Freeman, Huanting Wang, Huacheng Zhang
Summary: The intelligent regulation of ion flow in biological ion channels is essential to life. Artificial ion channels have been developed to intelligently control ion permeation. However, their gating performance is inferior to that of biological ion channels. Recently, emerging advanced materials have provided promising tools to fabricate responsive sub-nanofluidic channels with efficient gating performance.
ACCOUNTS OF MATERIALS RESEARCH
(2023)
Review
Materials Science, Multidisciplinary
Gabriele Scandura, Sana Eid, Ali A. Alnajjar, Twinkle Paul, Georgios N. Karanikolos, Dinesh Shetty, Khalid Omer, Rami Alqerem, Alaa Juma, Huanting Wang, Hassan A. Arafat, Ludovic F. Dumee
Summary: Stimuli-responsive metal-organic frameworks (MOFs) are versatile porous materials that can respond to external stimuli such as temperature, pressure, pH, and light. This review focuses on the design strategies for obtaining photo-responsive MOFs, including the encapsulation of photo-switchable molecules, fabrication of MOF composites, post-synthesis modification, and synthesis of MOFs with photo-responsive ligands. The review analyzes recent literature reports in terms of material chemistry and performance, compares different strategies, discusses future challenges, and addresses the fatigue issue of photo-responsive MOFs in prolonged irradiation cycling.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Physical
Jue Hou, Huacheng Zhang, Huanting Wang, Aaron W. Thornton, Kristina Konstas
Summary: Researchers have synthesized amphiphilic metal-organic framework subnanochannels with dual cation and anion sieving properties. These channels exhibit excellent anion sieving properties under acidic conditions and cation sieving properties under alkaline conditions. This study provides a new approach to manipulate the selectivity of ion channels and guide the choice of metal-organic frameworks for different applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Xiaocong Tang, Xu Wu, Hao Wu, Xinyu Zhang, Mingbao Feng, Tong Ouyang, Huanting Wang, Ranwen Ou
Summary: A one-step strategy was used to partially quaternize the ligand of UiO-66-NH2, resulting in UiO-66-N(CH3)(3)(+), which showed significantly improved photocatalytic performance for Cr(VI) reduction, with the apparent reaction rate constant k increasing by 8.3 times. This strategy can effectively enhance the performance of other MOFs-NH2, demonstrating its general applicability.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Fanmengjing Wang, David Pizzi, Yizhihao Lu, Kaiqiang He, Kristofer J. J. Thurecht, Matthew R. R. Hill, Philip J. J. Marriott, Mark M. M. Banaszak Holl, Kristian Kempe, Huanting Wang
Summary: Chiral separation membranes have great potential for separating racemic mixtures into enantiopure components, but fabricating scalable membranes with both high selectivity and flux is challenging. In this study, a new type of enantioselective membrane was prepared using enantiopure S-poly(2,4-dimethyl-2-oxazoline) macromonomers and supported by graphene oxide nanosheets. The S-PdMeOx-based membrane showed near-quantitative enantiomeric excess and a high flux. This work demonstrates the potential of homochiral polymers in chiral discrimination and provides a new route to develop highly efficient enantioselective membranes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Huacheng Zhang, Xingya Li, Jue Hou, Lei Jiang, Huanting Wang
Summary: This review comprehensively summarizes the research progress in the rational design and synthesis of artificial subnanometer-sized ion channels, discusses their ion selectivity and applications, and explores the gaps between natural channels and synthetic channels in terms of ion selectivity and permeability.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)