DOI: 10.1016/j.watres.2018.02.048
Scopus记录号: 2-s2.0-85042847948
论文题名: Influence of composition and concentration of saline water on cation exchange behavior in forward osmosis desalination
作者: Cheng W. ; Lu X. ; Yang Y. ; Jiang J. ; Ma J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 137 起始页码: 9
结束页码: 17
语种: 英语
英文关键词: Cation exchange
; Forward osmosis
; Solute species
; Solution concentration
; Thin-film composite membrane
Scopus关键词: Chlorine compounds
; Composite membranes
; Desalination
; Osmosis
; Positive ions
; Saline water
; Sulfur compounds
; Thin films
; Wastewater treatment
; Cation exchanges
; Forward osmosis
; Solute species
; Solution concentration
; Thin film composite membranes
; Osmosis membranes
; anion
; chloride
; divalent cation
; monovalent cation
; nitrate
; polyamide
; salt water
; sulfate
; cation
; nitric acid derivative
; sea water
; composite
; concentration (composition)
; desalination
; ion exchange
; membrane
; osmosis
; pollutant transport
; seawater
; solute transport
; wastewater treatment
; Article
; cation exchange
; cation transport
; desalination
; diffusion
; engineering
; forward osmosis
; ion transport
; membrane
; osmosis
; priority journal
; water transport
; artificial membrane
; chemistry
; devices
; osmosis
; procedures
; waste water
; water management
; Anions
; Cations
; Membranes, Artificial
; Nitrates
; Osmosis
; Seawater
; Waste Water
; Water Purification
英文摘要: Thin film composite (TFC) membranes are the gold standard for the application of forward osmosis (FO) in seawater desalination and wastewater treatment. However, bidirectional mass transport phenomena in this process still hinder its wider application. A deeper understanding of ion transport behavior in various solution conditions is critical for the fabrication of FO membrane and future development of FO process. In this work, we systematically investigated the influences of solution chemistry on ion mass transport in TFC FO membranes. Our results suggested that the mass transports of cations were much larger than those of anions in FO processes, and monovalent cations with smaller hydrated radius could induce greater cation exchange than divalent cations. Though anions did not participate in the cation exchange processes directly, cations paired with nitrate could transport through the TFC membrane more readily than those paired with chloride or sulfate. Additionally, a set of experiments with series solution concentrations confirmed the existence of cation transport bottleneck for one TFC FO membrane. We found that the cation transport capacity of TFC membranes was mainly determined by the concentration of feed solution and the generation of cation exchange behavior was independent of water transport. Engineering implications of our findings for FO application were also discussed. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112817
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520–8286, United States
Recommended Citation:
Cheng W.,Lu X.,Yang Y.,et al. Influence of composition and concentration of saline water on cation exchange behavior in forward osmosis desalination[J]. Water Research,2018-01-01,137