Recovery of humic-reducing bacteria from a diversity of environments

Article Abstract:

Research was conducted to determine the microorganisms responsible for the microbial reduction of humic substances in sedimentary environments. Humic-reducing bacteria were isolated from various sediment types such as lake sediments, marine sediments and contaminated wetland sediments. Results indicate that in all the types of sediments that were analyzed, the acetate-oxidizing humic-reducing microorganisms recovered belonged to the Geobacteraceae family.

Microbial ecology, Humic acid, Humic acids, Sediments (Geology)

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Anaerobic degradation of polycyclic aromatic hydrocarbons and alkanes in petroleum-contaminated marine harbor sediments

Article Abstract:

Microbiological research shows that polycyclic aromatic hydrocarbons and alkanes found in petroleum-contaminated marine harbor sediments can be broken down in a sulfate-reducing, anaerobic environment. Future pollution clear-up schemes may include the self-purifying characteristics of PAHs and alkanes. Since hydrocarbon compounds are broken down over time by a range of microbial populations, a limited amount of hydrocarbon pollution can be controlled.

Environmental aspects, Alkanes, Hydrocarbon research

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Oxidation of polycyclic aromatic hydrocarbons under sulfate-reducing conditions

Article Abstract:

A study was conducted on the oxidation of polycyclic aromatic hydrocarbons under sulfate-reducing or Fe(III)-reducing conditions. Experiments were performed with sediments from San Diego Bay. Results showed that hydrocarbon-contaminated sediments have a greater capacity to self-purify than previously reported.

Oxidation, Physiological, Physiological oxidation

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