Minireview: The Potential of Enhanced Manganese Redox Cycling for Sediment Oxidation

Both natural and anthropogenic processes are responsible for excessive organic loading of submerged soils, with detrimental environmental consequences. The often insufficient natural attenuation can be enhanced by exploiting microbial manganese cycles. This review describes how an anoxic oxidation o...

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Bibliographic Details
Published inGeomicrobiology journal Vol. 24; no. 7-8; pp. 547 - 558
Main Authors De Schamphelaire, Liesje, Rabaey, Korneel, Boon, Nico, Verstraete, Willy, Boeckx, Pascal
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 03.12.2007
Subjects
cycle
manganese
organic matter
oxidation
redox
sediment
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Summary:Both natural and anthropogenic processes are responsible for excessive organic loading of submerged soils, with detrimental environmental consequences. The often insufficient natural attenuation can be enhanced by exploiting microbial manganese cycles. This review describes how an anoxic oxidation of organic matter with concomitant reduction of MnO 2 can link up with a reoxidation of the resulting, soluble Mn(II) in oxic layers. The potentially attainable oxidation rates through these natural cycles are of the same order as the organic carbon accumulation rates. The microbiology and physiology of the responsible organisms are discussed, as well as examples of naturally occurring manganese cycles and the possibility to engineer this natural phenomenon.
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ISSN:0149-0451
1521-0529
DOI:10.1080/01490450701670137