The effects of pH and Fluoride on the soluble fraction of aluminium in water coagulated with alum.
- 1 January 1985
- journal article
- research article
- Published by Taylor & Francis in Environmental Technology Letters
- Vol. 6 (1-11) , 11-20
- https://doi.org/10.1080/09593338509384314
Abstract
Various waters were coagulated with alum to remove color. For alum dosages of .apprx. 20-90 mg l-1 (as Al2(SO4)3 .cntdot. 14 H2O) and an operating pH of 5.5-7.5, colloidal and particulate aluminum hydroxide exist. The soluble fraction of Al as determined by 0.1 .mu.m membrane filtration follows a simple function of pH and the presence of fluoride at the l mg l-1 level was shown to significantly increase the total soluble fraction of aluminum when pH < 7. [The toxic effects of Al are discussed.].This publication has 9 references indexed in Scilit:
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