Removal of sulphates from South African mine water using coal fly ash

被引：0

作者：

Madzivire, G. ^{[1
]}

Gitari, W. M.

Ojumu, T. V.

Balfour, G. ^{[1
]}

Misheer, N.

Petrik, L. F. ^{[1
]}

机构：

[1] Univ Western Cape, ENS Grp, Dep Chem, ZA-7535 Bellville, South Africa

来源：

MINE WATER & INNOVATIVE THINKING | 2010年

关键词：

sulphates; acid mine drainage; neutral mine drainage; fly ash; ettringite; SOLUBILITY;

D O I：

暂无

中图分类号：

TD [矿业工程];

学科分类号：

0819 ;

摘要：

South African power stations generate large amounts of highly alkaline fly ash (FA) which has a serious impact on the environment. Acid mine drainage (AMD) is another environmental problem containing high concentration of heavy metal and SO42-. Several studies have shown that 80-90 % of SO42- can be removed when FA is co-disposed with AMD rich in Fe and Al. Many sources of contaminated mine waters in South Africa have circumneutral pH and much lower concentrations of Fe and Al, but are rich in Ca, Mg and SO42-. This study evaluated SO42- removal from neutral mine drainage (NMD) and AMD using FA.

引用

页码：151 / 154

页数：4

共 7 条

[1]

Blowes D.W., 1994, Environmental chemistry of sulphide mine wastes, P271

[2] Treatment of acid mine drainage with fly ash: Removal of major contaminants and trace elements [J].