Effects of chelating agents on zeta potential of cadmium-contaminated natural clay

Ying Ying Gu, Albert T. Yeung, Albert Koenig, Hong Jiang Li

研究成果: Article同行評審

23 引文 斯高帕斯(Scopus)

摘要

The effects of pH, ionic strength, cadmium concentration, and chelating agents on the zeta potential of a natural clay of high acid/base buffer capacity from Shanghai, China were investigated in this study, with a view to enhancing the efficiency of electrokinetic remediation of the cadmium-contaminated clay. An increase in the ionic strength of the background solution or cadmium concentration increases the zeta potential on soil particle surfaces, i.e., less negative. CAIW increases the zeta potential slightly but the effects are not pronounced. EDTA and phosphonates decrease the zeta potentials of soil particle surfaces, thus enhancing forward electroosmotic flow.

原文English
頁(從 - 到)2203-2222
頁數20
期刊Separation Science and Technology
44
發行號10
DOIs
出版狀態Published - 1月 2009

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