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

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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Veröffentlicht in:Korean Journal of Soil Science and Fertilizer 2007-02, Vol.40 (1), p.64-70
Hauptverfasser: 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: Artikel
Sprache:eng
Schlagworte:
Activation
HEAVY METALS
METAL LOURD
METALES PESADOS
Na-bentonite
Removal
Swelling Indexes
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Zusammenfassung: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.
ISSN:0367-6315
2288-2162