Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The effect of Acetobacter sp. and a sulfate-reducing bacterial consortium from ethanol fuel environments on fatigue crack propagation in pipeline and storage tank steels

Published

Author(s)

Jeffrey W. Sowards, Charles H. Williamson, Timothy S. Weeks, Joseph D. McColskey, John R. Spear

Abstract

This study evaluated the effects of microbiologically influenced corrosion (MIC) on fatigue crack growth of candidate materials useful in expanding bioethanol usage including: a storage tank steel (ASTM A36) and two pipeline steels (API 5L X52 and X70). The microbiological species sampled from an ethanol fuel production stream, Acetobacter aceti and Desulfosporosinus sp., were responsible for acetic acid and hydrogen sulfide production that led to significant increases in fatigue crack growth rate across a wide range of stress intensity amplitudes (ΔK). The mechanism for increased fatigue damage is uptake of hydrogen that embrittles material ahead of the growing fatigue crack.
Citation
Corrosion Science
Volume
79

Keywords

A36, acetic acid, Acid producing bacteria, biocide, biofuel, fatigue crack propagation, fuel grade ethanol, hydrogen sulfide, microbiologically influenced corrosion, pipeline steel, sulfate reducing bacteria, X52, X70

Citation

Sowards, J. , Williamson, C. , Weeks, T. , McColskey, J. and Spear, J. (2014), The effect of Acetobacter sp. and a sulfate-reducing bacterial consortium from ethanol fuel environments on fatigue crack propagation in pipeline and storage tank steels, Corrosion Science, [online], https://doi.org/10.1016/j.corsci.2013.10.036 (Accessed May 26, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created February 1, 2014, Updated November 10, 2018