Immobilization of Cadmium in Soil by Newly Developed Apatite-like Compounds Prepared from Oyster Shells
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概要
- 論文の詳細を見る
Oyster shell powder (an industrial waste) was reacted with diammonium phosphate with calcium to phosphate mole ratios of 5:5, 5:4, and 5:3 at both room (25–28°C) and high (100°C) temperatures to form apatite-like compounds. Oyster shell powder could react with the diammonium phosphate but crystallinity and the cadmium immobilizing effect were poor compared with commercially available hydroxyapatite. Calcium hydroxide was added to the oyster shell powder with an oyster shell to calcium hydroxide mole ratio of 6:4. When this mixture was reacted with 6 moles of diammonium phosphate under the same temperature conditions, a compound with crystallinity close to that of commercially available hydroxyapatite and a higher cadmium retention capacity could be synthesized. It was demonstrated that the cadmium immobilizing ability of this compound in soil is even larger than that of commercially available hydroxyapatite and also has an excellent soil neutralizing ability.
- 2012-03-30
著者
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Inoue Koichi
Division Of Cardiology Sakurabashi Watanabe Hospital
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Inoue Koichi
Division Of Soil Science Faculty Of Agriculture Saga University
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Islam Md.
Division Of Information And Production Science Graduate School Of Engineering And Science Kyoto Inst
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Someya Takashi
Division Of Soil Science Faculty Of Agriculture Saga University
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Someya Takashi
Division Of Microbiology School Of Medical Technology Universily Of Occupational And Environmental H
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Ueno Daisuke
Division Of Soil Science Faculty Of Agriculture Saga University
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Ueno Daisuke
Division Of Soil Environment Faculty Of Agriculture Saga University
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Islam Md.
Division Of Soil Environment Faculty Of Agriculture Saga University
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