Microbial ecology of Rum Jungle, Part I. - environmental study of sulphidic overburden dumps, experimental heap-leach piles and tailings dam area.

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dc.contributor.authorGoodman, AEen_AU
dc.contributor.authorKhalid, AMen_AU
dc.contributor.authorRalph, BJen_AU
dc.date.accessioned2007-11-22T04:27:50Zen_AU
dc.date.accessioned2010-04-30T04:38:43Zen_AU
dc.date.available2007-11-22T04:27:50Zen_AU
dc.date.available2010-04-30T04:38:43Zen_AU
dc.date.issued1981-12en_AU
dc.description.abstractThe microbial ecology of the abandoned uranium mine at Rum Jungle, Northern Territory, was investigated to determine the nature and extent of microbial populations occurring in sulphidic waste areas. Several groups of bacteria were identified and population sizes were estimated, using selective media techniques. Various physicochemical parameters of each sample were determined and correlated with the occurrence of bacteria. A medium giving a high percentage recovery of Thiobacillus ferrooxidans colonies was developed. Sulphidic waste areas were found to support a large and diverse microbial flora, with T. ferrooxidans consistently occurring, although microorganisms were isolated only from the far eastern end of the tailings dam area. In White's dump, relatively low numbers of T. ferrooxidans and high numbers of acidophilic heterotrophs occurred with no seasonal variation, whereas sulphur-oxidising bacteria were absent at the end of the dry season and increased to high numbers during the wet. Desulfovibrio spp. were isolated only from a zone, less that one metre high, at the very base of the dump within which conditions otherwise were aerobic. The dump supported different microbial populations in localised areas and, in two areas where T. ferrooxidans was virtually absent, little pyritic oxidation appeared to be occurring. Intermediate dump was found to differ significantly from White's. T. ferrooxidans was the major microbial species, numbers of which increased from the end of the wet season to the early dry. Other bacterial types were scarce and no anaerobic bacteria was isolated. Relatively crude temperature measurements indicated that, in the top of the dump, pyritic oxidation may be occurring more homogeneously and at higher rates than in White's dump.en_AU
dc.identifier.citationGoodman, A, E., Khalod, A. M., Ralph, B. J., (1981). Microbial ecology of Rum Jungle, Part I. - environmental study of sulphidic overburden dumps, experimental heap-leach piles and tailings dam area. Lucas Heights, NSW: Australian Atomic Energy Commission Research Estabishment.en_AU
dc.identifier.govdoc695en_AU
dc.identifier.otherAAEC-E-531en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/685en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectLeachingen_AU
dc.subjectOxidationen_AU
dc.subjectCopper compoundsen_AU
dc.subjectThiobacillus ferroxidansen_AU
dc.subjectTailingsen_AU
dc.titleMicrobial ecology of Rum Jungle, Part I. - environmental study of sulphidic overburden dumps, experimental heap-leach piles and tailings dam area.en_AU
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