|Table of Contents|

Structural and Charge Parameters of Spiral Nanofiltration Membrane(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2008年02期
Page:
46-50
Research Field:
Publishing date:

Info

Title:
Structural and Charge Parameters of Spiral Nanofiltration Membrane
Author(s):
Zhang Xianqiu1; Xue Liping2; Du Mingxia1; Wang Liyou1; Pan Fei1
1.School of Power Engineering,Nanjing Normal Universty,Nanjing 210042,China;2.Environment School,Anhui Universty of Architecture,Hefei 230022,China
Keywords:
nanofiltra tion m em brane;  SHP m ode ; l TM S m ode ; l struc tura l param eters;  charge character ization
PACS:
TB383.2
DOI:
-
Abstract:
S tructura l param e ters( m embrane pore rad ius and the ratio o fm em brane poro sity tom em brane thickness) and the param eters o f charge characterstics ( Charge density ) are the m ost im portant characteristic param eters of nano filtration m em brane, and are a lso key fac to rs wh ich have an im po rtant influence on separation pe rfo rm ance. Perm eation experim ents o f aqueous solution of neutra l so lutes and electro ly tew ith NF90 and NF270 spiralm embranes w ere conducted and m em branes param e ters ( reflec tion coeffic ient and so lute pe rm eab ility) w ere obtained from Spieg ler-Kedem equation, then structura l param eters and the effective charge densities w ere estim a ted using the ster ic-h indrance pore ( SH P) model and TM S m ode l respectiv ely. M em brane po re radius o fNF90 and NF270 w ere about 0.46 nm and 0.60 nm respective ly, the ra tio of membrane po rosity to m em brane th ickness w ere about 0.99× 105 m - 1 and 1.14 × 105 m - 1 respective ly, Charge density cou ld be determ ined byX ( NF90) = 54.89Cm + 175.85 and X ( NF270) = 6.20Cm + 6.55 respectively.

References:

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Last Update: 2013-04-24