Swelling Indexes and Relevant Removal of Cd and Pb of the Na-bentonite activated with Na₂CO₃ and NaHCO

In this experiment we transformed the Ca-bentonite into Na-bentonite with two inorganic Na-chemicals under different temperatures. These two Na-chemicals were selected among five different Na-chemicals which carries Na as cation. The swelling capacity of the Na chemical-treated bentonite was increas...

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Bibliographic Details
Published inKorean Journal of Soil Science and Fertilizer Vol. 40; no. 1
Main Authors Chung, D.Y. (Chungnam National University, Daejeon, Republic of Korea), E-mail: dychung@cnu.ac.kr, Yang, J.E. (Kangwon National University, Chuncheon, Republic of Korea), Oh, T.G. (Chungnam National University, Daejeon, Republic of Korea), Lee, K.S. (Chungnam National University, Daejeon, Republic of Korea)
Format Journal Article
LanguageEnglish
Published 01.02.2007
Subjects
Activation
HEAVY METALS
METAL LOURD
METALES PESADOS
Na-bentonite
Removal
Swelling Indexes
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Summary:In this experiment we transformed the Ca-bentonite into Na-bentonite with two inorganic Na-chemicals under different temperatures. These two Na-chemicals were selected among five different Na-chemicals which carries Na as cation. The swelling capacity of the Na chemical-treated bentonite was increased with increasing Na concentration, while the maximum concentration of Na solution decreased with increasing temperature. Na₂CO₃ was most effective in exchanging Ca ions and resulting in the highest swelling index among the Na-chemicals.
Bibliography:F07
2008002186
ISSN:0367-6315