磁导率
电解质
反渗透
膜
渗透
化学工程
化学
材料科学
工程类
电极
生物化学
物理化学
作者
Silvana M.S. Ghiu,Robert P. Carnahan,Marilyn Barger
出处
期刊:Desalination
[Elsevier]
日期:2002-09-01
卷期号:144 (1-3): 387-392
被引量:27
标识
DOI:10.1016/s0011-9164(02)00348-x
摘要
A direct osmosis study was carried out using several 1:1 and 2:1 electrolytes, which diffused in a RO TFC membrane. The solute permeability DSMKS/δ has been calculated using the preferential sorption capillary flow model. It was found that to some extent the ions maintain their hydration in the membrane and the permeation is a function of the hydrated radii rather than crystal ionic radii. Moreover, a linear dependence was found between electrolyte permeability through the membrane and their average diffusivity in infinite dilute solution. The relatively low permeation of 2:1 chloride salts was attributed to the interaction with the membrane surface charge.
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