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20. Biodegradation of Organic Pollution Involving Soil Iron(III) Solubilized by Bacterial Siderophores as an Electron Acceptor

Author

L. P. Antonyuk, Alexander A. Kamnev, and Vladimir V. Ignatov

Subjects
chemistry.chemical_classification, Siderophore, Chemistry, Environmental chemistry, Inorganic chemistry, Oxidizing agent, chemistry.chemical_element, Organic matter, Microbial biodegradation, Biodegradation, Electron acceptor, Oxygen, Bioavailability
Abstract

Microbial degradation of organic matter, like any oxidation process, requires an oxidizing agent. The role of the latter may be played by oxygen (the most common electron acceptor). However, under microaerobic conditions (ground water, subsurface soil) the supply of oxygen is limited, which, in its turn, may limit the biodegradation rate. An alternative possibility is the use of other electron acceptors, among which iron(III) is generally abundant in soil, yet being poorly soluble at physiological pH values. In this case its bioavailability can be essentially increased, e.g. by adding a chelating agent: NTA, EDTA, etc.

Published
1999

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