SOLUBILITY RELATIONSHIPS OF ZINC ASSOCIATED WITH ACID-MINE DRAINAGE

被引：5

作者：

REDDY, KJ ^{[1
]}

SULLIVAN, PJ ^{[1
]}

YELTON, JL ^{[1
]}

机构：

[1] WESTERN RES INST,DIV ENVIRONM CHEM,UNIV STN,LARAMIE,WY

来源：

JOURNAL OF ENVIRONMENTAL QUALITY | 1988年 / 17卷 / 04期

关键词：

Mines and Mining--Drainage - Oil Shale--Leaching - Pyrites - Solutions--pH Effects;

D O I：

10.2134/jeq1988.00472425001700040032x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Two eastern oil shales were leached under aerobic unsaturated environments using the humidity cell method. The leachates from the humidity cells were filtered, and the filtrates were analyzed for total concentrations of cations and anions. From the total concentrations, ion activities were calculated. The results show that the pH of the leachates decreased due to oxidation of pyrite. Above pH 7.00, the Zn2+ activity was supported by Zn2SiO4 (willemite) in equilibrium with measured H4SiO40 activity. Below pH 5.00, Zn2+ activity for both shales appeared to be saturated by ZnFe2O4 (franklinite) in equilibrium with measured Fe3+ activity.

引用

页码：712 / 714

页数：3

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