Treatment or remediation of natural or waste water
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United States of America Patent
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Sep 15, 2015
Grant Date -
Sep 13, 2012
app pub date -
Mar 19, 2010
filing date -
Mar 20, 2009
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Abstract
A process for treating a natural or wastewater containing dissolved Mg or dissolved Al comprising the steps of adding at least one Mg-containing compound or at least one Al-containing compound to the natural or wastewater to thereby form a layered double hydroxide (LDH) containing Mg and Al as predominant metal species in a lattice of the LDH. The LDH may comprise hydrotalcite. The AL-containing compound may be aluminate or aluminium hydroxide derived from the Bayer process or from an alumina refinery.
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