Abstract
Environmental contamination by Te and Se oxyanions has become a serious concern, with the search for green, ecologically friendly methods for removal gaining ground. Bacteria capable of reducing these highly toxic compounds to a virtually non-toxic elemental form could provide a solution. In this study, four strains of bacteria with potential for bioremediation of Te and Se oxyanions were investigated. Under aerobic conditions over 48 h, Erythromicrobium ramosum, strain E5 removed 244 µg/ml tellurite and 98 µg/ml selenite, Erythromonas ursincola, KR99 203 µg/ml tellurite and 100 µg/ml selenite, AV-Te-18 98 µg/ml tellurite and 103 µg/ml selenite and ER-V-8 93 µg/ml tellurite and 103 µg/ml selenite. In the absence of oxygen, AV-Te-18 and ER-V-8 removed 10 µg/ml tellurite after 24 and 48 h, respectively and 46 and 25 µg/ml selenite, respectively, over 48 h. ER-V-8 removed 14 µg/ml selenate after 5 days. This highlights the great potential of these microbes for use in bioremediation.
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This work was supported by a National Science and Engineering Research Council of Canada Discovery grant held by V. Yurkov.
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Communicated by Erko Stackebrandt.
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Maltman, C., Yurkov, V. Bioremediation potential of bacteria able to reduce high levels of selenium and tellurium oxyanions. Arch Microbiol 200, 1411–1417 (2018). https://doi.org/10.1007/s00203-018-1555-6
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DOI: https://doi.org/10.1007/s00203-018-1555-6