Bio-geo-electrochemical Systems and their Applications
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Authors
Lis, Michael Lucas
Issue Date
2017-05
Type
Electronic thesis
Thesis
Thesis
Language
ENG
Keywords
Environmental engineering
Alternative Title
Abstract
Some groups of microorganisms use poorly soluble, redox-reactive minerals as terminal electron acceptors. Collectively known as ‘dissimilatory metal-reducing bacteria (DMRB), these microbes significantly influence geochemical reactions with global implications [1]. Enzymatic reduction of poorly crystalline iron minerals by the DMRB Shewanella oneidensis MR-1 produces a variety of nanoparticulate biogenic minerals, such as magnetite and pyrite, with unique morphologies and potential for industrial applications. Research presented here investigates the use of applied electrical potential to expand the range of biogenic particles produced by DMRB under a variety of controlled laboratory conditions. MR-1 was grown in a chemically defined medium in continuous flow bioreactors under conditions that prepared them for growth in 2 types of experimental reaction chambers. Steady state operating conditions were monitored via sensors within the bioreactor vessel.
Description
May 2017
School of Engineering
School of Engineering
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY