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- W1480666538 abstract "The lack of quality water supplies in the Western Australian gold fields is a limiting factor in the use of biological oxidation to treat refractory gold ores prior to the extraction of gold by cyanidation. Clearly, the recycling of water from the CIP process back to a biological oxidation plant is desirable in regions where supplies of fresh water are a limiting resource. However, thiocyanate, a by-product of the cyanidation process and a major contaminant in tailings dams, must be removed if water is to be recycled because it is toxic to sulphide-oxidising bacteria. Two strains of bacteria that were capable of degrading thiocyanate were isolated from the Youanmi mine in Western Australia. Both strains demonstrated the ability to utilise thiocyanate as their sole energy and nitrogen source. Physiological characterization of the strains indicated that both species of bacteria had the potential to tolerate the variable conditions encountered in Youanmi tails water. Phylogenetic analysis showed that one strain was a member of the genus Thiobacillus and the other was a member of the genus Halomonas but neither could be accommodated within any described species. Phosphate was the only additional nutrient required for thiocyanate degradation. Both strains were inoculated into a laboratory-scale Rotating Biological Contactor (RBC). The success and extent of colonization was confirmed by recovery of signature lipids of both strains from the fixed-film biomass. The bacteria degraded thiocyanate to ammonium, sulphate and carbon dioxide. The biomass supported on the reactor surface area (20 m2) was capable of degrading approximately 2800 mg L−1 to less than 1 mg L−1 thiocyanate at a flow rate of 30 mL min−1. The process operated in saline, low nutrient water." @default.
- W1480666538 created "2016-06-24" @default.
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- W1480666538 date "1999-01-01" @default.
- W1480666538 modified "2023-10-06" @default.
- W1480666538 title "Bacterial degradation of thiocyanate in saline process water" @default.
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- W1480666538 doi "https://doi.org/10.1016/s1572-4409(99)80172-2" @default.
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