Removal of Fe2+-, Cu2+-, Al3+- and Pb2+-ions from phosphoric acid by sorption on carbonate-modified natural zeolite and its mixture with bentonite

被引：36
|
作者：
Sultanbayeva, G. Sh [1 ]
Holze, R. [2 ]
Chernyakova, R. M. [1 ]
Jussipbekov, U. Zh [1 ]
机构：
[1] Inst Chem Sci, Lab Fertilizer & Salt Chem, Alma Ata 050010, Kazakhstan
[2] Tech Univ Chemnitz, Inst Chem, D-09111 Chemnitz, Germany
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2013年 / 170卷
关键词：
Purification; Phosphoric acid; Zeolite; Bentonite; Sorption;
D O I：
10.1016/j.micromeso.2012.11.022
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Results of studies of the sorption activity of pristine and activated (with Na2CO3 solution) zeolite and a composite based on zeolite and bentonite with respect to Fe2+, Al3+, Pb2+ are presented. The influence of zeolite particle size, activation, and its duration on the degree of sorption of heavy metal ions from phosphoric acid is reported. The activation of zeolite by sodium carbonate solution increases its sorption capacity for these ions substantially. The highest degrees of acid purification were achieved in the first 5 min of the process with removal of 60.2% for Fe, 95.4% for Al, 99.0% for Pb and 96.6% for Cu of the initial concentrations. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码：173 / 180
页数：8
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