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	Intra-layer flow in fouling layer on membranes
	Yang, Z. ; Peng, X. F. ; Chen, Ming-Yuan ; Lee, Duu-Jong ; Lai, J. Y.
	2010-05-11 ; 2010-05-11
关键词	fouling layer structure staining CLSM modeling pore blockage WASTE-WATER TREATMENT EXTRACELLULAR POLYMERIC SUBSTANCES ACTIVATED-SLUDGE SYSTEM FILTRATION CHARACTERISTICS BIOFILM STRUCTURE BIOREACTORS MICROFILTRATION FILTERABILITY PERMEABILITY GROWTH Engineering, Chemical Polymer Science
中文摘要	The structure of fouling layer determines the pressure drop across the fouling layer. Three-dimensional distributions of nucleic acids, proteins, alpha-D-glueopyranose polysaccharides, beta-D-glucopyranose polysaccharides and lipids in the biofouling layer that is formed on a mixed cellulose ester membrane were determined using a six-fold staining protocol combined with confocal laser scanning microscopy (CLSM). Based on the three-dimensional volumetric grid model of the fouling layer structure observed from the series of CLSM images, the intra-layer flow field during filtration was simulated using commercial software. The effective permeability of the fouling layer was estimated to be 2.65 x 10(-12) m(2), which determines the upper estimate on the permeability of the fouling layer. The pores were categorized according to their diameters, using the maximum convex perimeter approach, and then the effects of the blocking pores on the permeability of the fouling layer were investigated. Blocking the large pores that accounted for 15% of the porosity reduced the mean permeability by 58%. (c) 2006 Elsevier B.V. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25569]
专题	清华大学
推荐引用方式 GB/T 7714	Yang, Z.,Peng, X. F.,Chen, Ming-Yuan,et al. Intra-layer flow in fouling layer on membranes[J],2010, 2010.
APA	Yang, Z.,Peng, X. F.,Chen, Ming-Yuan,Lee, Duu-Jong,&Lai, J. Y..(2010).Intra-layer flow in fouling layer on membranes..
MLA	Yang, Z.,et al."Intra-layer flow in fouling layer on membranes".(2010).

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