Article
Engineering, Chemical
Yali Zhao, Xiayi Yang, Jiayu Luo, Yanying Wei, Haihui Wang
Summary: MOF membranes have great potential in gas separation, but their industrialization is hindered by complex and time-consuming synthesis methods. This study successfully synthesized a series of ZIF-8 membranes using the fast current drive synthesis (FCDS) method on polydopamine-modified porous stainless steel hollow fiber substrates. The ZIF-8 hollow fiber membranes exhibited good selectivity and permeance, making significant progress in accelerating the industrialization of MOF membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
M. Salome Macedo, N. Acha Uriarte, M. A. Soria, Luis M. Madeira, J. A. Calles, R. Sanz, D. Alique
Summary: This study investigates the use of different sizes of CeO2 particles to generate an intermediate layer and facilitate the deposition of a thin Pd-film on H-2 selective membranes. Membrane M demonstrates the best performance in terms of H-2 permeance, and the stability of the membranes is high regardless of the particle size.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Thermodynamics
Tae-Woo Kim, Eun-Han Lee, Segi Byun, Doo-Won Seo, Hyo-Jung Hwang, Hyung-Chul Yoon, Hansung Kim, Shin-Kun Ryi
Summary: In this study, an alumina sol assisted pretreatment method was used to prepare a highly selective Pd composite membrane for ammonia decomposition. The membrane reactor achieved high ammonia conversion and high-purity hydrogen production, with the advantage of selectively removing hydrogen.
Article
Engineering, Chemical
Nicholas C. Means, Daniel J. Haynes, Robert M. Enick, Bret H. Howard, Dushyant Shekhawat
Summary: Hydrogen isotope separation can be achieved using a palladium (Pd) membrane due to the different solubility, diffusivity, and permeability of protium (H) and deuterium (D) in Pd. The permeability of H (k(H2)) and D (k(D2)) were studied at various temperatures and pressures using a Pd membrane separation unit. The selectivity of the Pd membrane towards H2 increases with temperature but decreases at higher temperatures due to the influence of competitive transport and isotope diffusion.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Pasquale Francesco Zito, Adele Brunetti, Giuseppe Barbieri
Summary: This study investigated the concentration and purification of hydrogen from multicomponent gas mixtures using simulations of multi-stage membrane configurations. The results showed that carbon and polymeric membranes in multi-stage configuration can increase the hydrogen content in the gas mixture, while Pd-alloy membranes can achieve high-purity hydrogen recovery. The integrated process of polymer/carbon membranes and Pd-alloy membranes reduces operating pressure and saves costs.
Article
Engineering, Chemical
Lei Qiu, Jiaxu Zhang, Zhiguang Guo, Weimin Liu
Summary: A novel Janus membrane has been developed for efficient oil-water emulsion separation with excellent performance in terms of wear resistance and adaptability to harsh environments.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Isaiah A. Moses, Veronica Barone
Summary: Some intrinsically porous 2D membranes exhibit low energy barriers and high permeability to gases with small kinetic diameters and high selectivity, making them promising candidates for applications in gas processing such as natural gas dehydration and sweetening, He recovery, O2 and N2 production from air, H2 purification, and CO2 capturing.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Jun-Yi Wang, Yen-Hsun Chi, Jin-Hua Huang
Summary: Sequential addition of hydrazine in an EDTA-free bath resulted in the fabrication of high-performance composite Pd membranes with improved selectivity and cycling stability compared to membranes made using EDTA-contained bath.
Article
Green & Sustainable Science & Technology
Fernanda A. Arzani, Altamirando C. Ribeiro Neto, Natalia M. Terra, Vicelma L. Cardoso, Miria H. M. Reis
Summary: Palladium membranes are a viable option for obtaining high purity hydrogen for industrial applications. Experimental and calculated hydrogen flux data through composite palladium/alumina membranes were compared, showing that considering external mass transfer and support resistances can significantly affect the accuracy of the calculated hydrogen flux.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Guangzhuang Cheng, Kunpeng Dou, Guang Yuan
Summary: First-principle density functional theory is used to investigate the hydrogen separation performance of porous carbon nanotubes. The study shows that PCNTs are excellent materials for H2 purification and have higher selectivity towards H2 compared to other gas molecules.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Saleh S. Alarfaji, Sajjad Hussain, Muhammad Arshed, Shamraiz Hussain Talib, Taj Ur Rahman, Abdul Rauf, Islam Ullah Khan
Summary: This work focuses on platinum and palladium-based autocatalytic plates for hydrogen removal. The results showed that the catalytic plates coated with alumina exhibit higher catalytic efficiency compared to those without alumina coating. Among the different coating ratios, Pt 90%: Pd 10% shows the best performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Applied
Li Cao, Jun Zhou, Hong Hao, Prabir K. Dutta
Summary: This study investigated two types of zeolite meshes for oil/water separation, finding that the secondary grown zeolite mesh exhibited high separation efficiency and good repeatability, showing potential for application in the field of oil/water separation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Tianqing Zheng, Wei Zhou, Xuyang Chu, Yunsong Lian, Xiang Huang, Kwan San Hui, Kwun Nam Hui
Summary: A columnar regular-porous structure with small specific surface area and high superficial area has been developed to improve hydrogen production performance. A numerical simulation model of the structure has been established and compared with a body-centered cubic structure. The results show that the columnar structure has higher methanol conversion, larger H-2 flow rate, and higher CO selectivity. The research provides a new method for optimizing hydrogen production reaction support.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Energy & Fuels
Omid Jazani, Julia Bennett, Simona Liguori
Summary: The development of sustainable and new technologies based on renewable energy sources is crucial due to climate change and the depletion of fossil fuels. Hydrogen is a clean alternative that can be produced through methanol steam reforming, using methanol as an energy carrier. Membrane reactors are gaining attention as an alternative technology for carbon-low hydrogen production. This review provides an overview of recent progress in hydrogen production from methanol reforming using conventional and membrane reactors.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Chemistry, Physical
Weipeng Zhang, Liejun Li, Tungwai Ngai, Ling Hu
Summary: This study investigates the sintering and nitriding processes of porous high-nitrogen austenitic stainless steel through hydrogen reduction, and analyzes the phase composition, microstructure, mechanical properties, and corrosion resistance. The results show that hydrogen reduction can improve the compressive properties and corrosion resistance of the stainless steel.
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)