Simultaneous removal of metals Cu2+, Fe3+ and Cr3+ with anions SO42- and HPO42- using clinoptilolite

被引：44

作者：

Inglezakis, VJ ^{[1
]}

Zorpas, AA ^{[1
]}

Loizidou, MD ^{[1
]}

Grigoropoulou, HP ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Dept Chem Engn, GR-15780 Athens, Greece

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2003年 / 61卷 / 1-3期

关键词：

clinoptilolite; heavy metals; ion exchange; anion complexes; adsorption;

D O I：

10.1016/S1387-1811(03)00364-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In the present study the effect of SO42- and HPO42- on ion exchange of Cu2+, Fe3+ and Cr3+, on natural clinoptilolite is examined under normality of 0.01 N, temperature of 25 +/- 2 degreesC and pH 2-2.5 after four days of equilibration. It is observed that Cu2+ uptake is significantly decreased in the presence of HPO42- and SO42. The observed effect is less significant for Fe3+ and Cr3+ in the presence of SO42- and HPO42- respectively. This could possibly be due to the metal- anion complex formation and the nature and charges of the complex species present. Blank solutions show precipitation in the case of Fe3+/HPO42- solution, leading in complete removal of Fe3+ from solutions. Precipitation along with ion exchange is resulting in higher removal of Fe3+ from the solution than ion exchange or precipitation alone. Finally, anion co-removal is significant, reaching 80% for HPO42- ions. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：167 / 171

页数：5

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