DOI: 10.1016/j.watres.2018.06.027
Scopus记录号: 2-s2.0-85053053749
论文题名: Intermolecular interactions of polysaccharides in membrane fouling during microfiltration
作者: Meng S. ; Fan W. ; Li X. ; Liu Y. ; Liang D. ; Liu X.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 143 起始页码: 38
结束页码: 46
语种: 英语
英文关键词: Intermolecular interaction
; Membrane fouling
; Polysaccharides
; Transparent exopolymeric particles (TEP)
Scopus关键词: Complex networks
; Desalination
; Membrane fouling
; Membrane technology
; Polysaccharides
; Wastewater reclamation
; Effective dimensions
; Extracellular polymeric substances
; Fouling propensities
; Intermolecular crosslinking
; Intermolecular interactions
; Membrane filtrations
; Seawater desalination
; Transparent exopolymeric particles (TEP)
; Microfiltration
; biofouling
; desalination
; homogeneity
; membrane
; molecular analysis
; polymer
; polysaccharide
; seawater
; ultrafiltration
; wastewater
英文摘要: Membrane technology has been widely employed for seawater desalination, water and wastewater reclamation, while membrane fouling still remains as a major challenge. The polysaccharides in extracellular polymeric substances (EPS) have been recognized as an important foulant that causes serious membrane fouling, while the detailed structure of polysaccharides and the intermolecular interactions between them have not been adequately disclosed. In this study, two different polysaccharides and their mixtures were used to study the intermolecular cross-linking of polysaccharides as well as its effects on membrane fouling. Results demonstrated that the fouling propensities of distinct polysaccharides were completely different, which was attributed to the different intermolecular interactions lying in polysaccharides. The cross-linking among molecules of polysaccharide, regardless of the homogeneity, was found to form complex networks and determine the effective dimension of polysaccharides. Depending on the effective dimension of foulants, pore blocking and cake layer occurred subsequently during filtration processes. In light of this, it potentially gives new insights into the fouling behaviours by combining the structure-function knowledge of polysaccharides with their fouling propensity. In addition, transparent exopolymeric particles (TEP) measurement was found to provide an intuitionistic evaluation of the complex networks formed from polysaccharides, so that may act as a good indicator of fouling during membrane filtration. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112593
Appears in Collections: 气候减缓与适应
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作者单位: School of Space and Environment, Beihang University, Beijing, 100191, China; Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore639798, Singapore
Recommended Citation:
Meng S.,Fan W.,Li X.,et al. Intermolecular interactions of polysaccharides in membrane fouling during microfiltration[J]. Water Research,2018-01-01,143