DOI: 10.1016/j.watres.2018.05.003
Scopus记录号: 2-s2.0-85047190884
论文题名: Transport of trace organic compounds through novel forward osmosis membranes: Role of membrane properties and the draw solution
作者: Sauchelli M. ; Pellegrino G. ; D'Haese A. ; Rodríguez-Roda I. ; Gernjak W.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 141 起始页码: 65
结束页码: 73
语种: 英语
英文关键词: Forward osmosis
; Mass transport
; Thin-film composite membrane
; Trace organic contaminants
Scopus关键词: Chemical reactions
; Composite membranes
; Ionic strength
; Mass transfer
; Organic compounds
; Salt removal
; Thin films
; Contaminated wastewater
; Forward osmosis
; Forward osmosis membranes
; Negative surface charges
; Thin film composite membranes
; Thin-film composite membrane
; Trace organic compounds
; Trace organic contaminants
; Osmosis membranes
; cellulose
; organic compound
; cellulose triacetate
; organic compound
; ionic composition
; mass transport
; membrane
; organic compound
; organic pollutant
; osmosis
; permeability
; solute
; wastewater treatment
; water flux
; Article
; concentration (parameters)
; membrane permeability
; membrane transport
; osmosis
; priority journal
; solute
; static electricity
; stereospecificity
; surface charge
; water permeability
; water transport
; analogs and derivatives
; artificial membrane
; chemistry
; devices
; osmolarity
; osmosis
; permeability
; solution and solubility
; waste water
; water management
; water pollutant
; Chemical Reactions
; Ionic Strength
; Mass Transfer
; Membranes
; Organic Compounds
; Thin Films
; Transport
; Water Permeability
; Cellulose
; Membranes, Artificial
; Organic Chemicals
; Osmolar Concentration
; Osmosis
; Permeability
; Solutions
; Static Electricity
; Waste Water
; Water Pollutants, Chemical
; Water Purification
英文摘要: Forward osmosis (FO) offers to be a very promising technology for the removal of trace organic compounds (TrOCs) from contaminated wastewater, and with the recent developments in FO membranes, the effect of both a higher water flux and reverse salt flux on the rejection of TrOCs needs to be explored. In this study two novel thin-film composite (TFC) membranes with greater water permeability and selectivity than the benchmark cellulose tri-acetate (CTA) membrane were compared at bench-scale in terms of TrOCs permeability. By probing the solute-membrane interactions that dictate the transport of TrOCs through the two membranes in the absence and presence of a draw solution, several conclusions were drawn. Firstly, steric hindrance is the main TrOCs transport -limiting mechanism through TFC membranes unless the negative membrane surface charge is significant, in which case, electrostatic interactions can dominate over steric hindrance. Secondly, the increase in ionic strength induced by the draw solution in the vicinity of and perhaps inside the membrane seems to favour the rejection of TrOCs by “shrinking” the membrane pores or by “shielding” the negative surface charge. Lastly, during FO operation, solute concentration polarisation becomes detrimental when working at high water fluxes, whereas the reverse solute flux has no direct impact on the transport of TrOCs through the membrane. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112683
Appears in Collections: 气候减缓与适应
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作者单位: Catalan Institute for Water Research (ICRA), Emili Grahit 101, Girona, 17003, Spain; Laboratory of Chemical and Environmental Engineering (LEQUiA), Institute of the Environment, University of Girona, Girona, E17071, Spain; Department of Civil Engineering and Architecture, University of Catania, Viale A. Doria 6, Catania, 95125, Italy; Department of Applied Analytical and Physical Chemistry, University of Ghent, Coupure Links 653, Ghent, B-9000, Belgium; Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, Barcelona, 08010, Spain
Recommended Citation:
Sauchelli M.,Pellegrino G.,D'Haese A.,et al. Transport of trace organic compounds through novel forward osmosis membranes: Role of membrane properties and the draw solution[J]. Water Research,2018-01-01,141