The influence of pH and coarse media on manganese precipitation from water

This technical note represents the initial results of a research project investigating manganese removal from water by filtration through low cost coarse media which may be suitable for rural water treatment in developing countries. A manganese solution of 1 mg/l was shaken with limestone, gravel, c...

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Bibliographic Details
Published in:Water research (Oxford) 1992, Vol.26 (6), p.853-855
Main Authors: Aziz, Hamidi A., Smith, Paul G.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
limestone
manganese
Pollution
water treatment
Water treatment and pollution
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Summary:This technical note represents the initial results of a research project investigating manganese removal from water by filtration through low cost coarse media which may be suitable for rural water treatment in developing countries. A manganese solution of 1 mg/l was shaken with limestone, gravel, crushed brick or with no solid media at various pH values. At a final pH value of 8.5, limestone gave 95% removal of manganese, crushed brick gave 82% removal, gravel gave about 60% removal and the removal for aeration and settlement with no solid media was less than 15%. The results indicate that rough solid media and the presence of carbonate are beneficial in the precipitation of manganese in water.
ISSN:0043-1354
1879-2448
DOI:10.1016/0043-1354(92)90017-X