Detoxification of Antimonic Contaminated Water and Precipitation Recovery of Antimony by Mineralization under Hydrothermal Condition
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