Selective dissolution of iron minerals in acid mine drainage and iron-oxidizing microbial communities for the purpose of measuring nanowire conductivity
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Authors
Agar, Janie
Issue Date
2016-05
Type
Electronic thesis
Thesis
Thesis
Language
ENG
Keywords
Environmental engineering
Alternative Title
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
School of Engineering
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY