Cadmium Contents of Soil and Rice Grains after Bench-scale Washing with Biodegradable Chelating Agents(Symposium 3.5.1 Heavy Metal Contaminated Soils,<Special Issue>International Symposium: Soil Degradation Control, Remediation, and Reclamation, Tokyo Met
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概要
- 論文の詳細を見る
The ability of the following seven biodegradable chelating agents (BCAs) to extract cadmium (Cd) from the soils of three paddies was tested in a tube-scale experiment to select an appropriate BCA for soil washing: 1-aspartate-N,N-diacetic acid tetrasodium; N-2-hydroxyethyliminodiacetic acid disodium; (S,S)-ethylene diamine disuccinic acid; dicarboxymethyl glutamic acid; nitrilotriacetic acid; sodium methylglycine diacetate, tribasic (MGDA・3Na); and d-gluconic acid. MGDA・3Na proved to be a promising BCA candidate for soil washing in terms of extraction efficiency, and a bench-scale test confirmed the effectiveness of MGDA・3Na for removal of soil Cd. In a pot experiment, soil washing lowered the Cd concentration in rice grains but negatively affected rice yield.
- 日本ペドロジー学会の論文
著者
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MAKINO Tomoyuki
National Institute for Agro-Environmental Sciences
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Takano Hiroyuki
Taiheiyo Cement Corp.
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KAMIYA Takashi
Taiheiyo Cement Corp.
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Makino Tomoyuki
National Inst. Agro‐environmental Sci. Tsukuba Jpn
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