DOI: 10.1016/j.watres.2018.02.038
Scopus记录号: 2-s2.0-85042497971
论文题名: Application of a new dynamic transport model to predict the evolution of performances throughout the nanofiltration of single salt solutions in concentration and diafiltration modes
作者: Déon S. ; Lam B. ; Fievet P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 136 起始页码: 22
结束页码: 33
语种: 英语
英文关键词: Donnan-steric-pore model
; Dynamic model
; Ion rejection
; Nanofiltration
; Real modes of operation
Scopus关键词: Dynamic models
; Forecasting
; Light polarization
; Nanofiltration membranes
; Recycling
; Concentration variation
; Feed concentration
; Filtration performance
; Ion rejection
; Modes of operation
; Pore models
; Single-salt solutions
; Transport modeling
; Nanofiltration
; deionized water
; inorganic salt
; adsorption
; concentration (composition)
; experiment
; filtration
; membrane
; performance assessment
; recycling
; adsorption
; Article
; evolution
; isotherm
; mathematical model
; nanofiltration
; physical chemistry
; priority journal
; simulation
; transport kinetics
; water treatment
; artificial membrane
; devices
; filtration
; nanotechnology
; procedures
; theoretical model
; Filtration
; Membranes, Artificial
; Models, Theoretical
; Nanotechnology
英文摘要: Although many knowledge models describing the rejection of ionic compounds by nanofiltration membranes are available in literature, they are all used in full recycling mode. Indeed, both permeate and retentate streams are recycled in order to maintain constant concentrations in the feed solution. However, nanofiltration of real effluents is implemented either in concentration or diafiltration modes, for which the permeate stream is collected. In these conditions, concentrations progressively evolve during filtration and classical models fail to predict performances. In this paper, an improvement of the so called “Donnan Steric Pore Model”, which includes both volume and concentration variations over time is proposed. This dynamic model is used here to predict the evolution of volumes and concentrations in both permeate and retentate streams during the filtration of salt solutions. This model was found to predict accurately the filtration performances with various salts whether the filtration is performed in concentration or diafiltration modes. The parameters of the usual model can be easily assessed from full batch experiments before being used in the dynamic version. Nevertheless, it is also highlighted that the variation of the membrane charge due to the evolution of feed concentration over time has to be taken into account in the model through the use of adsorption isotherms. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112846
Appears in Collections: 气候减缓与适应
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作者单位: Institut UTINAM (UMR CNRS 6213), Université de Bourgogne Franche-Comté, 16 route de Gray, Besançon cedex, 25030, France
Recommended Citation:
Déon S.,Lam B.,Fievet P.. Application of a new dynamic transport model to predict the evolution of performances throughout the nanofiltration of single salt solutions in concentration and diafiltration modes[J]. Water Research,2018-01-01,136