The simultaneous removal of calcium and chloride ions from calcium chloride solution using magnesium-aluminum oxide

被引：66

作者：

Kameda, T

Yoshioka, T

Mitsuhashi, T

Uchida, M

Okuwaki, A

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Appl Chem, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

WATER RESEARCH | 2003年 / 37卷 / 16期

关键词：

hydrotalcite-like compound; magnesium-aluminum oxide; CaCl2; solution; removal; simultaneous; buffering action;

D O I：

10.1016/S0043-1354(03)00311-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We investigated the removal of Ca2+ and Cl- from CaCl2 solution at 20-60degreesC, using magnesium-aluminum oxide, Me0.80Al0.20O1.10, prepared by the thermal decomposition of a hydrotalcite-like compound, Mg0.80Al0.20(OH)(2) (CO3)(0.10) (.) 0.78H(2)O. The degree of Ca2+ and Cl- removal from the solution increased with increasing initial CaCl2 concentration. temperature, and quantity of Mg0.80Al0.20O1.10 added. When Mg0.80Al0.20O1.10 was added to 0.25 M CaCl2 solution in a Mg0.80Al0.20O1.10/CaCl2 molar ratio of 20, the degree of Ca2+ and Cl- removal from the solution at 60degreesC after 0.5h was 93.0% and 98.2%, respectively. These results reveal that Mg0.80Al0.20O1.10 has the capacity to remove Ca2+ and Cl- simultaneously from aqueous solution. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：4045 / 4050

页数：6

共 23 条

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