Detoxification of Antimonic Contaminated Water and Precipitation Recovery of Antimony by Mineralization under Hydrothermal Condition
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The detoxification of water contaminated by antimony and its resource recovery are achieved by hydrothermal mineralization treatment. The treatment is based on the precipitation method of a mineral from aqueous media by imitating natural mineralization mechanism derived from activity of magma. The treatment could reduce Sb concentration in aqueous media, when the formed mineral was Ca<SUB>2</SUB>(Sb<SUB>2</SUB>O<SUB>7</SUB>), which resembled natural mineral of Monimolite ((Pb,Ca)<SUB>2</SUB>Sb<SUB>2</SUB>O<SUB>7</SUB>). The antimony concentration in water after the hydrothermal mineralization under optimal conditions was 0.06 mg/dm<SUP>3</SUP>. Additionally, the rapid cooling of the treated water made much progress in the treatment efficiency to disturb the re-dissolution of the formed mineral. Therefore, this treatment is effective for detoxification of water polluted by antimonic species and its resource recovery.
- Chemistry Letters
Chemistry Letters 36(4), 524-525, 2007-04-05
The Chemical Society of Japan