期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 43, 期 20, 页码 7977-7984出版社
AMER CHEMICAL SOC
DOI: 10.1021/es9013932
关键词
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资金
- National Science Foundation [0647712]
- ConocoPhillips
- Direct For Biological Sciences
- Div Of Molecular and Cellular Bioscience [0647712] Funding Source: National Science Foundation
Corrosion of metallic oilfield pipelines by microorganisms is a costly but poorly understood phenomenon, with standard treatment methods targeting mesophilic sulfate-reducing bacteria. In assessing biocorrosion potential at an Alaskan North Slope oil field, we identified thermophilic hydrogen-using methanogens, syntrophic bacteria, peptide- and amino acid-fermenting bacteria, iron reducers, sulfur/thiosulfate-reducing bacteria, and sulfate-reducing archaea. These microbes can stimulate metal corrosion through production of organic acids, CO2, sulfur species, and via hydrogen oxidation and iron reduction, implicating many more types of organisms than are currently targeted. Micromolar quantities of putative anaerobic metabolites of C-1-C-4 n-alkanes in pipeline fluids were detected, implying that these low molecular weight hydrocarbons, routinely reinjected into reservoirs for oil recovery purposes, are biodegraded and can provide biocorrosive microbial communities with an important source of nutrients.
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