Minireview: The Potential of Enhanced Manganese Redox Cycling for Sediment Oxidation |
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| Authors: | Liesje De Schamphelaire Korneel Rabaey Nico Boon Willy Verstraete Pascal Boeckx |
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| Affiliation: | 1. Laboratory of Microbial Ecology and Technology (LabMET) , Ghent University , Coupure Links 653, B-9000 , Ghent , Belgium;2. Laboratory of Applied Physical Chemistry (ISOFYS) , Ghent University , Coupure Links 653, B-9000 , Ghent , Belgium |
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| Abstract: | 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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| Keywords: | sediment organic matter oxidation manganese cycle redox |
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