BAUXITE FILTER
April 1st, 2002
BY MATTHEW BRACEA FINE-GRAINED red mud left after alumina has been extracted from bauxite is showing promise as a way of cleansing waste- water, a potential new environment-friendly market for the mineral.The residue can remove phosphorous and heavy metals from water with a lower pH level than normal, which can then be released within quality limits.It could save industry millions of pounds with mining probably benefiting most, particularly for acid mine draining.Australian chemical manufacturer Incitec Ltd has completed laboratory tests and is now planning more ...
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