REMOVAL OF HEXAVALENT CHROMIUM ANIONS FROM SOLUTIONS BY PYRITE FINES

被引：157
|
作者：
ZOUBOULIS, AI
KYDROS, KA
MATIS, KA
机构：
[1] Department of Chemistry, Aristotle University
来源：
WATER RESEARCH | 1995年 / 29卷 / 07期
关键词：
CR(VI) REMOVAL; PYRITE FINE PARTICLES; MINERAL PROCESSING WASTES; TAILINGS REUSE; WASTE-WATER TREATMENT;
D O I：
10.1016/0043-1354(94)00319-3
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Bench scale experiments were conducted in the laboratory, aiming to the removal of hexavalent chromium from aqueous solutions, by dispersed pyrite fine particles. Pyrite (iron sulphide mineral), was found to act as an efficient Cr(VI) reducing agent. The resulted hydroxo-Cr(III) species were found to be precipitated (and removed) onto the pyrite particles. The process mechanism was also examined by zeta-potential measurements and speciation studies. Promising results were obtained at highly acidic pH values (around 1-2), showing an interesting aspect of fine (solid waste) mineral particles utilization, in the removal of a priority pollutant.
引用
收藏
页码：1755 / 1760
页数：6
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