Ultrafiltration of Humic Acid Solution: Effects of Self‐dispersible Carbon Black and Cations
Ultrafiltration of Humic Acid Solution: Effects of Self‐dispersible Carbon Black and Cations
复制标题
腐植酸溶液的超滤：自分散炭黑和阳离子的影响
DOI：
10.1080/01496390801973722
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发表时间：
2008
影响因子：
2.8
通讯作者：
S. Ohgaki
中科院分区：
文献类型：
--
作者：
J. Lohwacharin;S. Takizawa;S. Ohgaki
摘要采用搅拌池超滤装置，研究了炭黑（CB）对膜污染和大分子腐植酸（HA）截留的影响。稳定的CB分散体增加了过滤阻力，但增强了膜对HA的排斥。一价离子和二价离子对CB溶液过滤阻力的影响不同；即NaCl溶液由于靠近膜表面的扩散边界层中CB的浓度而表现出很高的电阻，而CaCl2和MgCl2溶液仅表现出饼状电阻。含有黑炭黑和透明质酸的饼状层比HA -饼状层更容易从膜上去除。
Abstract Effects of carbon black (CB) addition on membrane fouling and rejection of macromolecular humic acids (HA) were evaluated by a stirred‐cell ultrafiltration unit. Stable CB dispersions increased filtration resistances, but enhanced HA rejection by the membranes. Monovalent and divalent ions affected the filtration resistance of CB solution differently; namely, NaCl solution showed a very high resistance due to the concentration of CB in the diffusion boundary layer near the membrane surface, whereas CaCl2 and MgCl2 solutions showed only cake resistance. The cake layer containing both CB and HA was more easily removed from the membranes than HA‐cake layer.