Fungal biotransformation of zinc silicate and sulfide mineral ores.

Zhan Wei, Xinjin Liang, Helen Pendlowski, Stephen Hillier, Kallaya Suntornvongsagul, Prakitsin Sihanonth, Geoffrey Michael Gadd

    Research output: Contribution to journalArticle

    29 Citations (Scopus)

    Abstract

    In this work, several fungi with geoactive properties, including Aspergillus niger, Beauveria caledonica and Serpula himantioides, were used to investigate their potential bioweathering effects on zinc silicate and zinc sulfide ores used in zinc extraction and smelting, to gain understanding of the roles that fungi may play in transformations of such minerals in the soil, and effects on metal mobility. Despite the recalcitrance of these minerals, new biominerals resulted from fungal interactions with both the silicate and the sulfide, largely resulting from organic acid excretion. Zinc oxalate dihydrate was formed through oxalate excretion by the test fungi and the mineral surfaces showed varying patterns of bioweathering and biomineral formation. In addition, calcium oxalate was formed from the calcium present in the mineral ore fractions, as well as calcite. Such metal immobilization may indicate that the significance of fungi in effecting metal mobilization from mineral ores such as zinc silicate and zinc sulfide is rather limited, especially if compared with bacterial sulfide leaching. Nevertheless, important bioweathering activities of fungi are confirmed which could be of local significance in soils polluted by such materials, as well as in the mycorrhizosphere.

    Original languageEnglish
    Pages (from-to)2173-2186
    Number of pages14
    JournalEnvironmental Microbiology
    Volume15
    Issue number8
    DOIs
    Publication statusPublished - Aug 2013

    Fingerprint

    sulfide minerals
    silicate minerals
    ore mineral
    biotransformation
    Biotransformation
    Minerals
    Fungi
    silicate
    zinc
    sulfide
    silicates
    fungi
    fungus
    minerals
    oxalate
    Oxalates
    Metals
    metals
    Sulfides
    oxalates

    Keywords

    • Fungi
    • Biominerals
    • Zinc silicate
    • Zinc sulfide
    • oxalate
    • Bioweathering

    Cite this

    Wei, Z., Liang, X., Pendlowski, H., Hillier, S., Suntornvongsagul, K., Sihanonth, P., & Gadd, G. M. (2013). Fungal biotransformation of zinc silicate and sulfide mineral ores. Environmental Microbiology, 15(8), 2173-2186. https://doi.org/10.1111/1462-2920.12089
    Wei, Zhan ; Liang, Xinjin ; Pendlowski, Helen ; Hillier, Stephen ; Suntornvongsagul, Kallaya ; Sihanonth, Prakitsin ; Gadd, Geoffrey Michael. / Fungal biotransformation of zinc silicate and sulfide mineral ores. In: Environmental Microbiology. 2013 ; Vol. 15, No. 8. pp. 2173-2186.
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    Wei, Z, Liang, X, Pendlowski, H, Hillier, S, Suntornvongsagul, K, Sihanonth, P & Gadd, GM 2013, 'Fungal biotransformation of zinc silicate and sulfide mineral ores.', Environmental Microbiology, vol. 15, no. 8, pp. 2173-2186. https://doi.org/10.1111/1462-2920.12089

    Fungal biotransformation of zinc silicate and sulfide mineral ores. / Wei, Zhan; Liang, Xinjin; Pendlowski, Helen; Hillier, Stephen; Suntornvongsagul, Kallaya; Sihanonth, Prakitsin; Gadd, Geoffrey Michael.

    In: Environmental Microbiology, Vol. 15, No. 8, 08.2013, p. 2173-2186.

    Research output: Contribution to journalArticle

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    AU - Wei, Zhan

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    AU - Gadd, Geoffrey Michael

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    AB - In this work, several fungi with geoactive properties, including Aspergillus niger, Beauveria caledonica and Serpula himantioides, were used to investigate their potential bioweathering effects on zinc silicate and zinc sulfide ores used in zinc extraction and smelting, to gain understanding of the roles that fungi may play in transformations of such minerals in the soil, and effects on metal mobility. Despite the recalcitrance of these minerals, new biominerals resulted from fungal interactions with both the silicate and the sulfide, largely resulting from organic acid excretion. Zinc oxalate dihydrate was formed through oxalate excretion by the test fungi and the mineral surfaces showed varying patterns of bioweathering and biomineral formation. In addition, calcium oxalate was formed from the calcium present in the mineral ore fractions, as well as calcite. Such metal immobilization may indicate that the significance of fungi in effecting metal mobilization from mineral ores such as zinc silicate and zinc sulfide is rather limited, especially if compared with bacterial sulfide leaching. Nevertheless, important bioweathering activities of fungi are confirmed which could be of local significance in soils polluted by such materials, as well as in the mycorrhizosphere.

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    JF - Environmental Microbiology

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    Wei Z, Liang X, Pendlowski H, Hillier S, Suntornvongsagul K, Sihanonth P et al. Fungal biotransformation of zinc silicate and sulfide mineral ores. Environmental Microbiology. 2013 Aug;15(8):2173-2186. https://doi.org/10.1111/1462-2920.12089