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Behavior of Synthetic Layered Double Hydroxides in Soils  

Choi, Choong-Lyeal (Department of Agricultural Chemistry, Kyungpook National University)
Seo, Yong-Jin (Kyeongsangbuk-do Agricultural Technology Administration)
Lee, Dong-Hoon (Department of Agricultural Chemistry, Kyungpook National University)
Kim, Jun-Hyeong (Department of Agricultural Chemistry, Kyungpook National University)
Yeou, Sang-Gak (Department of Agricultural Chemistry, Kyungpook National University)
Choi, Jyung (Department of Agricultural Chemistry, Kyungpook National University)
Park, Man (Department of Agricultural Chemistry, Kyungpook National University)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.40, no.5, 2007 , pp. 412-417 More about this Journal
Abstract
This study was to elucidate the effects of layered double hydroxides(LDHs) application on the chemical properties of the soils along with the fate of the applied LDHs. The effects of LDHs application were compared with those of calcium carbonate widely used for the neutralization of acidic soils. Incorporation of LDHs into the soil resulted in higher pH value and $Mg^{2+}$ content in soil leachate than that of $CaCO_3$ treatment. There was no significant difference in water-soluble P content in both the treatments. However, $Al^{3+}$ and $Si^{4+}$ contents were decreased by LDHs and $CaCO_3$ treatment, even though a large amount of $Al^{3+}$ was released into soil solution with the disintegration of LDHs framework. LDHs structure in soil was gradually disintegrated from the its original layered structure under acidic condition of soil. Therefore, this study suggests that LDHs could be utilized as a carrier of functional substances to enhance the efficiency of various ago-chemicals without any ill effects on the soil environments.
Keywords
Layered double hydroxides; acidic soil; $CaCO_3$; Carrier; Functional substances;
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Times Cited By KSCI : 1  (Citation Analysis)
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