(DE19529021-C1)      Gram-negative sulphate-reducing bacterial strains which grow and reduce sulphate to sulphide under anaerobic conditions at pH 3.9-9.5 and 3-45 C utilise methanol as sole source of C and energy and are tolerant to metals.    USE -   Use of the bacterial strain(s) in decontaminating water (highly) loaded with H2SO4 and metals, esp. radioactive water, and partic. shaft and flood water from abandoned U mines and wash waters from soil-decontamination plants, is claimed.    ADVANTAGE -   The bacteria adsorb and accumulate radioactive metals and heavy and light metals. Water with pH 1-2 can be treated cheaply and effectively in a controlled, one-step process.    (ZA9606373-A)      Gram-negative sulphate-reducing bacterial strains which grow and reduce sulphate to sulphide under anaerobic conditions at pH 3.9-9.5 and 3-45 C utilise methanol as sole source of C and energy and are tolerant to metals.    USE -   Use of the bacterial strain(s) in decontaminating water (highly) loaded with H2SO4 and metals, esp. radioactive water, and partic. shaft and flood water from abandoned U mines and wash waters from soil-decontamination plants, is claimed.    ADVANTAGE -   The bacteria adsorb and accumulate radioactive metals and heavy and light metals. Water with pH 1-2 can be treated cheaply and effectively in a controlled, one-step process.    (US6080572-A)      Gram-negative sulphate-reducing bacterial strains which grow and reduce sulphate to sulphide under anaerobic conditions at pH 3.9-9.5 and 3-45 C utilise methanol as sole source of C and energy and are tolerant to metals.    USE -   Use of the bacterial strain(s) in decontaminating water (highly) loaded with H2SO4 and metals, esp. radioactive water, and partic. shaft and flood water from abandoned U mines and wash waters from soil-decontamination plants, is claimed.    ADVANTAGE -   The bacteria adsorb and accumulate radioactive metals and heavy and light metals. Water with pH 1-2 can be treated cheaply and effectively in a controlled, one-step process.