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The microbial alteration of organic matter. Petroleum can undergo aerobic or anaerobic (e.g., sulfate-reducing or methanogenic) biodegradation during

...ic). The second process can occur in the absence of oxygen (anaerobic) The aerobic mechanism is highlighted in [[:File:GeoWikiWriteOff2021-Aljezen-Figure2.png ...an alcohol and oxidize iron from Fe²⁺ to Fe³⁺. Under aerobic conditions, simple aromatics such as benzene, xylene and toluene can be deg