Selective dissolution of iron minerals in acid mine drainage and iron-oxidizing microbial communities for the purpose of measuring nanowire conductivity

Authors
Agar, Janie
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Other Contributors
Gorby, Yuri
Nyman, Marianne
Kilduff, James
Issue Date
2016-05
Keywords
Environmental engineering
Degree
MS
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This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
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Abstract
A laboratory system was designed to generate microbial biofilms from a variety of iron oxidizing communities. Microbial communities of acid mine drainage can be induced to dissolve their mineral phases with the addition of a readily usable electron donor, such as dextrose, in the absence of oxygen. Mineral dissolution in acid mine drainage cultures exposes several features previously hidden within the iron phases of the culture. Scanning electron microscopic evidence revealed the presence of extracellular appendages that morphologically resemble electrically conductive “bacterial nanowires” produced by a number of iron reducing microbes, such as Shewanella oneidensis.
Description
May 2016
School of Engineering
Department
Dept. of Civil and Environmental Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
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