Metal and mineral transformations: A mycoremediation perspective

M. Fomina, G. M. Gadd

    Research output: Chapter in Book/Report/Conference proceedingChapter

    10 Citations (Scopus)

    Abstract

    Introduction In the periodic table, about 75% of the elements are classified as metals. While many metals are essential, e.g. K, Na, Ca, Mn, Mg, Fe, Cu, Zn, Co and Ni, many others have no apparent essential functions, e.g. Rb, Cs, Al, Cd, Ag, Au, Sr, U, Hg, Pb (Gadd, 1993). However, all can interact with fungi and most of them can exhibit toxicity above a certain threshold concentration, which will vary depending on the organism, metal species and environmental factors (Gadd & Griffiths, 1978; Gadd, 1993). The redistribution of toxic metals in the biosphere as a result of human activity has become an important process in the biogeochemical cycling of these metals. The main source of metal pollution is industrialization including operational and former mining sites, foundries and smelters, untreated sewage sludge, and as diffuse sources, metal piping, traffic, combustion by-products from coal-burning power stations, and other atmospheric pollution. Arsenic, cadmium, chromium, copper, nickel, lead and mercury are the most common metal pollutants (Knox et al., 2000) with a selection of metal radionuclides also entering the environment from a number of sources (Gadd, 2005). Unlike degradable organic contaminants, metals are not decomposed in the environment. They can, however, be buried (or otherwise contained), removed and recycled, or transformed into less toxic forms (Knox et al., 2000), these processes employing physical, chemical and biological methods singly or in combination.

    Original languageEnglish
    Title of host publicationExploitation of Fungi
    Subtitle of host publicationSymposium of the British Mycological Society Held at the University of Manchester September 2005
    EditorsG. D. Robson, Pieter van West, Geoffrey Gadd
    PublisherCambridge University Press
    Chapter13
    Pages236-254
    Number of pages19
    ISBN (Electronic)9780511902451
    ISBN (Print)9780521859356
    DOIs
    Publication statusPublished - 2007

    Publication series

    NameBritish Mycological Society Symposia
    Volume26

    Keywords

    • Plant Sciences
    • Life Sciences
    • Microbiology and Immunology

    ASJC Scopus subject areas

    • General Immunology and Microbiology

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