Preparation of Hydroxyapaptite (HAP) from Concrete Sludge and Evaluation of Its Capacity to Remove Cadmium, Copper and Fluoride Ions

被引：10

作者：

Nonaka, Kiyoshi ^{[1
]}

Iizuka, Atsushi ^{[2
]}

Yamasaki, Akihiro ^{[3
]}

Yanagisawa, Yukio ^{[4
]}

机构：

[1] Univ Tokyo, Fac Engn, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan

[2] Tohoku Univ, Res Ctr Sustainable Sci & Engn, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[3] Seikei Univ, Fac Sci & Technol, Dept Mat & Life Sci, Musashino, Tokyo 1808633, Japan

[4] Univ Tokyo, Grad Sch Frontier Sci, Dept Environm Syst, Kashiwa, Chiba 2778563, Japan

来源：

KAGAKU KOGAKU RONBUNSHU | 2010年 / 36卷 / 05期

关键词：

Concrete Sludge; Hydroxyapatite; Ion Exchange; Cadmium; Copper; Fluoride;

D O I：

10.1252/kakoronbunshu.36.539

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Sludge HAP was prepared from concrete sludge and ortho-phosphorus ions. The sludge HAP is composed of small crystals of hydroxyapatite (HAP) formed on the surface of cement powder of the concrete sludge. The sludge HAP showed the capacity to remove cadmium, copper and fluoride ions from aqueous solutions. The ions captured by the sludge HAP were stable under acid conditions with nitric acid (pH=4). The ion removal capacities of the sludge HAP were comparable to those of HAP prepared from other wastes. The sludge HAP can be applied to heavy metal ions or fluorine ions in water.

引用

页码：539 / 544

页数：6

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