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

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  • Takeshi Itakura
    Division of Environmental Research, EcoTopia Science Institute, Nagoya University
  • Ryo Sasai
    Division of Environmental Research, EcoTopia Science Institute, Nagoya University
  • Hideaki Itoh
    Division of Environmental Research, EcoTopia Science Institute, Nagoya University

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<jats:title>Abstract</jats:title> <jats:p>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 Ca2(Sb2O7), which resembled natural mineral of Monimolite ((Pb,Ca)2Sb2O7). The antimony concentration in water after the hydrothermal mineralization under optimal conditions was 0.06 mg/dm3. 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.</jats:p>

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  • Chemistry Letters

    Chemistry Letters 36 (4), 524-525, 2007-03-10

    Oxford University Press (OUP)

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