Journal of Membrane Science Letters最新文献_第8页

New parametrization method for salt permeability of reverse osmosis desalination membranes 反渗透脱盐膜盐透性参数化新方法

Journal of Membrane Science Letters Pub Date : 2022-05-01 DOI: 10.1016/j.memlet.2021.100010

P.M. Biesheuvel , J.E. Dykstra , S. Porada , M. Elimelech

{"title":"New parametrization method for salt permeability of reverse osmosis desalination membranes","authors":"P.M. Biesheuvel , J.E. Dykstra , S. Porada , M. Elimelech","doi":"10.1016/j.memlet.2021.100010","DOIUrl":"10.1016/j.memlet.2021.100010","url":null,"abstract":"<div>Reverse osmosis (RO) is the most important membrane technology for the desalination of water. Measured water and salt fluxes are traditionally analyzed in the context of the solution-diffusion (SD) model which leads to a water permeability, A, and a salt permeability, B. However, this parametrization of the salt flux is not correct for water desalination by RO membranes, because these membranes show markedly different retentions for different feed salt concentrations, a classical observation in the literature, and this effect is not captured by the SD model. Thus, the traditional salt permeability B is not an intrinsic property of these membranes. We present a new analysis for desalination of a 1:1 salt, which follows from a transport theory that is based on the assumption that coions are strongly excluded from the membrane, and we demonstrate that it accurately describes a large dataset of salt retention by an RO membrane as function of pressure and feed salt concentration. This analysis leads to unique values of the water and salt permeabilities, A and <math><msup><mrow><mi>B</mi></mrow><mrow><mo>″</mo></mrow></msup></math>, not dependent on salt concentration or permeate water flux. Because we now have an improved parametrization, we can more accurately compare different membranes or study in more detail how membrane performance depends on conditions such as salt type and temperature. The new equation can provide guidance for the design of high-performance desalination membranes and for process modeling of desalination systems.</div>","PeriodicalId":100805,"journal":{"name":"Journal of Membrane Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772421221000106/pdfft?md5=31548e8063aad337ee297ad916b979fd&pid=1-s2.0-S2772421221000106-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78525921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Fouling-Resistant Membranes with Tunable Pore Size Fabricated Using Cross-Linkable Copolymers with High Zwitterion Content 用高两性离子含量的交联共聚物制备孔径可调的抗污膜

Journal of Membrane Science Letters Pub Date : 2022-05-01 DOI: 10.1016/j.memlet.2022.100019

Samuel J. Lounder, Patrick T. Wright, Luca Mazzaferro, Ayse Asatekin

引用次数: 4

Enhancing side chain swing ability by novel all-carbon twisted backbone for high performance anion exchange membrane at relatively low IEC level 新型全碳扭曲骨架在低IEC条件下增强高性能阴离子交换膜侧链摆动能力

Journal of Membrane Science Letters Pub Date : 2021-12-15 DOI: 10.1016/j.memlet.2021.100007

Huaqing Zhang, Yang Zhang, Fan Zhang, Xiaolin Ge, Wanjie Song, Chengpeng Wei, Liang Wu, Tongwen Xu

{"title":"Enhancing side chain swing ability by novel all-carbon twisted backbone for high performance anion exchange membrane at relatively low IEC level","authors":"Huaqing Zhang, Yang Zhang, Fan Zhang, Xiaolin Ge, Wanjie Song, Chengpeng Wei, Liang Wu, Tongwen Xu","doi":"10.1016/j.memlet.2021.100007","DOIUrl":"10.1016/j.memlet.2021.100007","url":null,"abstract":"<div>A novel all-carbon backbone-based membrane is designed by introducing side chains at the non-coplanar site of twisted “ether-free” main chain via Suzuki coupling reaction. The twisted backbone reduces the hindrance effect, providing broader mobile space for the side chains and enhancing the swing ability of the side chains to facilitate the formation of ion channels and the transportation of OH−. As a result, the high conductivity is obtained at a relatively low IEC level. The QPS-PB-4 membrane exhibits a superior OH− conductivity of 50.1 to 94.4 mS cm−1 at 30 ℃ to 80 ℃ with an IEC of only 1.48 mmol g−1, and a low swelling ratio of less than 10%. Which show significant advantage among the traditional side-chain-type AEMs reported in recent years. Moreover, the as-prepared membranes have good mechanical and thermal stability, as well as excellent chemical stability because of the all-carbon backbone designed without any sensitive sites that can be attacked by hydroxide. The conductivity of the QPS-PB-4 membrane decrease by only 8% after treatment at 80 ℃ in 1 M NaOH for 1800 h. The fuel cell assembled with the as-prepared membrane has a peak power density of up to 558.8 mW cm−², indicating the promising application potential of the membranes.</div>","PeriodicalId":100805,"journal":{"name":"Journal of Membrane Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772421221000076/pdfft?md5=28842818e816ef95f1d97f90c4dccc07&pid=1-s2.0-S2772421221000076-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73540812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Tailored pore size and microporosity of covalent organic framework (COF) membranes for improved molecular separation 共价有机框架(COF)膜的定制孔径和微孔隙度，以改善分子分离

Journal of Membrane Science Letters Pub Date : 2021-12-15 DOI: 10.1016/j.memlet.2021.100008

Digambar B. Shinde , Li Cao , Xiaowei Liu , Dinga A.D. Wonanke , Zongyao Zhou , Mohamed N. Hedhili , Matthew Addicoat , Kuo-Wei Huang , Zhiping Lai

{"title":"Tailored pore size and microporosity of covalent organic framework (COF) membranes for improved molecular separation","authors":"Digambar B. Shinde , Li Cao , Xiaowei Liu , Dinga A.D. Wonanke , Zongyao Zhou , Mohamed N. Hedhili , Matthew Addicoat , Kuo-Wei Huang , Zhiping Lai","doi":"10.1016/j.memlet.2021.100008","DOIUrl":"10.1016/j.memlet.2021.100008","url":null,"abstract":"<div>Three crystalline truxene-based β-ketoenamine COF membranes (TFP-HETTA, TFP-HBTTA and TFP-HHTTA) are fabricated via a de novo monomer design approach to understand the fundamental correlations between pore structure and molecular separation performance. By introducing bulky alkyl groups into the truxene framework, the pore size of TFP-HETTA, TFP-HBTTA, and TFP-HHTTA are systematically tuned from 1.08 to 0.72 nm. Accordingly, the TFP-HETTA showed good water permeance of 47 L m−2 h−1 bar−1 along with a prominent rejection rate of Reactive Blue (RB, 800 Da) but less than 10% rejection rate of inorganic salts. In contrast, the TFP-HHTTA membrane with pore size of 0.72 nm can reject small dye molecules such as Safranin O (SO, 350 Da) and trivalent salts but with a moderate water permeance of 19 L m−2 h−1 bar−1. The pore-flow model rooted from the viscous flow could well fit the observed organic solvent nanofiltration results of all three COF membranes.</div>","PeriodicalId":100805,"journal":{"name":"Journal of Membrane Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772421221000088/pdfft?md5=09c0c61dbe8632cbe9e8eefa796ff197&pid=1-s2.0-S2772421221000088-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83602574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

The role of skin layer defects in organic solvent reverse osmosis membranes 皮肤层缺陷在有机溶剂反渗透膜中的作用

Journal of Membrane Science Letters Pub Date : 2021-12-05 DOI: 10.1016/j.memlet.2021.100004

Hye Youn Jang, Ryan P. Lively

{"title":"The role of skin layer defects in organic solvent reverse osmosis membranes","authors":"Hye Youn Jang, Ryan P. Lively","doi":"10.1016/j.memlet.2021.100004","DOIUrl":"https://doi.org/10.1016/j.memlet.2021.100004","url":null,"abstract":"<div>The fractionation of complex liquid hydrocarbon mixtures is an important and emerging area of membrane science. Polymeric asymmetric hollow fiber membranes have the potential to be used for this purpose, especially if the size and number of defects in the membrane skin layer can be precisely engineered. Here, we fabricated various “defect-engineered” Torlon hollow fiber membranes by modifying hollow fiber spinning conditions and spin dopes to study the role of skin layer defects in the organic solvent reverse osmosis (OSRO) membranes. The quality of the membranes was investigated using several sets of pure gas permeation experiments, which provided input data for a permeation resistance model that estimates the pore size and surface porosity of the asymmetric hollow fiber membrane. We develop and experimentally validate a resistance permeation model for solvent permeation and utilize the surface properties derived from the gas permeation experiments to estimate the relative permeation rates of solvents in a mixture. The approach outlined here highlights the interconnection between gas permeation analysis and OSRO separation performance using Torlon hollow fiber membranes as an exemplar test case. The solvent permeation model is then utilized to provide quantitative insight on the differences between OSRO and organic solvent nanofiltration (OSN), and highlight the important transition region between these two modalities.</div>","PeriodicalId":100805,"journal":{"name":"Journal of Membrane Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772421221000040/pdfft?md5=40acfae29ca8a578deca5f48f918124f&pid=1-s2.0-S2772421221000040-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137403257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Editorial to the first issue of the inaugural volume of Journal of Membrane Science Letters 《膜科学快报》杂志创刊号第一期社论

Journal of Membrane Science Letters Pub Date : 2021-12-05 DOI: 10.1016/j.memlet.2021.100006

Jerry Y.S. Lin , Rong Wang

引用次数: 0

Conformational-change-induced selectivity enhancement of CAU-10-PDC membrane for H2/CH4 and CO2/CH4 separation 构象变化诱导的cu -10- pdc膜对H2/CH4和CO2/CH4分离选择性增强

Journal of Membrane Science Letters Pub Date : 2021-12-05 DOI: 10.1016/j.memlet.2021.100005

Chung-Kai Chang , Hyun Jung Yu , Huiwon Jang , Ting-Hsiang Hung , Chung-Kai Chang , Jihan Kim , Jong Suk Lee , Dun-Yen Kang

{"title":"Conformational-change-induced selectivity enhancement of CAU-10-PDC membrane for H2/CH4 and CO2/CH4 separation","authors":"Chung-Kai Chang , Hyun Jung Yu , Huiwon Jang , Ting-Hsiang Hung , Chung-Kai Chang , Jihan Kim , Jong Suk Lee , Dun-Yen Kang","doi":"10.1016/j.memlet.2021.100005","DOIUrl":"10.1016/j.memlet.2021.100005","url":null,"abstract":"<div>The separation of H2/CH4 or CO2/CH4 is critical to the purification of natural gas. Herein, we report on novel membranes with a metal-organic framework of CAU-10-PDC for the separation of these two mixtures. The dense CAU-10-PDC membranes are fabricated on a porous alumina support using the seeded growth method. An unexpected increase in selectivity was observed while testing mixed gas permeation with either H2/CH4 or CO2/CH4 at a molar ratio of 50:50. Steady-state selectivity reached 101 for H2/CH4 and 62 for CO2/CH4. Ideal selectivity measured from single gas permeation reached 475 for H2/CH4 and 288 for CO2/CH4. Molecular dynamics simulations and time-resolved X-ray diffraction with a synchrotron radiation source were used to probe conformational changes in CAU-10-PDC induced by exposure to CH4. When exposed to an atmosphere containing CH4, CAU-10-PDC presented a change in the space group (from I41/amd to I41), which drastically reduced the pore limiting diameter from 4.15 to 2.95 Å, rendering the channel nearly impermeable to CH4.</div>","PeriodicalId":100805,"journal":{"name":"Journal of Membrane Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772421221000052/pdfft?md5=bc88058c566daef3e0c02c1d2c0cc52a&pid=1-s2.0-S2772421221000052-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75831088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

A novel acid resistant thin-film composite nanofiltration membrane with polyurea enhanced dually charged separation layer 一种新型聚脲增强双荷电分离膜耐酸复合纳滤膜

Journal of Membrane Science Letters Pub Date : 2021-12-05 DOI: 10.1016/j.memlet.2021.100002

Yang Cao , Yinhua Wan , Chulong Chen , Jianquan Luo

{"title":"A novel acid resistant thin-film composite nanofiltration membrane with polyurea enhanced dually charged separation layer","authors":"Yang Cao , Yinhua Wan , Chulong Chen , Jianquan Luo","doi":"10.1016/j.memlet.2021.100002","DOIUrl":"10.1016/j.memlet.2021.100002","url":null,"abstract":"<div>Fabricating acid resistant nanofiltration (NF) membranes with precise solute separation performance is highly demanded for acidic wastewater treatment but remains a challenge. Herein, we propose a facile strategy for preparing dually charged acid resistant NF membranes with both high cations and anions rejections via a two-layer reverse interfacial polymerization (r-IP) process. Organic monomers of trimesoyl chloride (TMC) and 1,4-phenylene diisocyanate (PPDI) are firstly applied to react with 3-aminobenzenesulfonamide (ABSA) to construct a negatively charged loose intermediate layer, followed by the r-IP of TMC/PPDI and polyethyleneimine (PEI) to engineer a dense positively charged top layer. The highly cross-linked polyurea (PU) formed by isocyanate and amine leads to an enhanced size sieving effect, and the well-arranged dually charged layer endows the membrane stronger electrostatic exclusion. The resultant membrane has 97.7% rejection of Na2SO4 and 93.0% of MgCl2, and it exhibits fairly high rejections to various heavy metals, as well as impressive long-term stability after exposure to strong acid (10 wt% of H2SO4 for 400 h).</div>","PeriodicalId":100805,"journal":{"name":"Journal of Membrane Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772421221000027/pdfft?md5=034af5ee7b614c343cca97866f3e4168&pid=1-s2.0-S2772421221000027-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85371412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

New compact expressions for concentration-polarization of trace-ions in pressure-driven membrane processes 压力驱动膜过程中痕量离子浓度-极化的新紧凑表达式

Journal of Membrane Science Letters Pub Date : 2021-12-05 DOI: 10.1016/j.memlet.2021.100003

Yaeli S. Oren , Viatcheslav Freger , Oded Nir

{"title":"New compact expressions for concentration-polarization of trace-ions in pressure-driven membrane processes","authors":"Yaeli S. Oren , Viatcheslav Freger , Oded Nir","doi":"10.1016/j.memlet.2021.100003","DOIUrl":"https://doi.org/10.1016/j.memlet.2021.100003","url":null,"abstract":"<div>Accounting for concentration-polarization (CP) is critical for modeling solute transport in membrane separation processes. In a mixed-electrolyte solution, ions' CP is affected not only by diffusion and advection but also by electromigration. Yet, the classic film model, lacking an electromigration term, is frequently used for modeling ion CP. Often, ion CP is altogether neglected to reduce the computational load. Here, we study the CP of trace ions in a dominant salt solution, a case relevant for many reverse-osmosis and nanofiltration processes. First, we revisit the solution-diffusion-electromigration-film theory to obtain an analytical solution for the CP and membrane-transport of trace-ions in a dominant salt solution. Secondly, we consider limiting conditions relevant to reverse-osmosis and nanofiltration, from which we derive two compact equations that emerge as a seamless extension to the classic film theory. These equations can be used to account for the effect of electromigration on CP with minimal effort. Thirdly, we use our theory to quantify the effect of electromigration on ion CP in different dominant salt solutions. Finally, by analyzing two environmental membrane processes, we demonstrate how our theory deviates from the conventional one and quantify the implications on membrane scaling potential and the transport of ionic contaminants.</div>","PeriodicalId":100805,"journal":{"name":"Journal of Membrane Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772421221000039/pdfft?md5=8742756c0c4113b199e5b3c2844e8c71&pid=1-s2.0-S2772421221000039-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137403258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbial diversity analysis of two full-scale seawater desalination treatment trains provides insights into detrimental biofilm formation 两个全尺寸海水淡化处理列车的微生物多样性分析提供了有害生物膜形成的见解

Journal of Membrane Science Letters Pub Date : 2021-12-05 DOI: 10.1016/j.memlet.2021.100001

Mircea Podar , Amanda L. May , Weiliang Bai , Kellie Peyton , Dawn M. Klingeman , Cynthia M. Swift , Devan A.F. Linson , Jacques Mathieu , Daniel Siljeström , Ignacio Beneyto , Lauren B. Stadler , Yosef Pinhas , Frank E. Löffler , Pedro J.J. Alvarez , Manish Kumar

{"title":"Microbial diversity analysis of two full-scale seawater desalination treatment trains provides insights into detrimental biofilm formation","authors":"Mircea Podar , Amanda L. May , Weiliang Bai , Kellie Peyton , Dawn M. Klingeman , Cynthia M. Swift , Devan A.F. Linson , Jacques Mathieu , Daniel Siljeström , Ignacio Beneyto , Lauren B. Stadler , Yosef Pinhas , Frank E. Löffler , Pedro J.J. Alvarez , Manish Kumar","doi":"10.1016/j.memlet.2021.100001","DOIUrl":"10.1016/j.memlet.2021.100001","url":null,"abstract":"<div>Detrimental biofilms on RO membranes remain a crucial challenge for seawater desalination. Comparative analysis of 16S rRNA gene amplicon sequencing data revealed differences and commonalities of biofilm communities associated with unit operations in the two largest seawater desalination facilities in the U.S., the Claude \"Bud\" Lewis Carlsbad Desalination Plant and the Tampa Bay Seater Desalination facility. At both plants, feedwater collected at a single time point was a poor indicator of the RO membrane communities, which showed far greater taxa diversity. The analysis of prefilter cartridges from the Carlsbad plant revealed similarly high taxon diversity as the RO module biofilms, with relevant differences. Algal sequences were enriched on the prefilter cartridges as were sequences representing Bdellovibrionota, which are predatory bacteria. Sequences representing opportunistic Gammaproteobacteria (i.e., Shewanella, Woesia) were present in significantly higher relative abundance on the RO membranes than in the prefilter cartridges, suggesting growth of certain taxa in the RO modules. Untargeted metabolomics distinguished intra- and inter-desalination plant biofilm samples, highlighting the potential value of this tool for biofilm monitoring. These findings underscore the value of omics tools for effective microbial monitoring, to understand biofouling dynamics within RO desalination plants, and to provide insight for the development of ecologically-informed biofilm control measures.</div>","PeriodicalId":100805,"journal":{"name":"Journal of Membrane Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772421221000015/pdfft?md5=b69e8029098dc8170275f8aef651e1a4&pid=1-s2.0-S2772421221000015-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74495239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6