Abstract/Details

Microbial transport and the use of microbial fuel cell technology to prevent iron release in landfills nearby northwest Florida


2011 2011

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Abstract (summary)

Microbial transport plays an essential role in microbial activities in the subsurface soil. In this research, transport of Echerichia coli, Pseudomonas fluorescens and Bacillus subtilis in silica sand under water unsaturated conditions was investigated using column experiments and a tworegion solute transport model was used to simulate the bacterial transport with an assumption that bacterial deposition occurred within the immobile region only. It was concluded from this research that bacterial retention in unsaturated porous media was determined by their interactions within the system, which could be predicted based on independently determined surface properties. Following this research, I further investigated the activities of Shewanella putrefaciens in reducing iron oxide in the iron rich soil of Northwest Florida with landfill leachate serving as the carbon source. In addition, adsorption of reduced ferrous iron on S. putrefaciens was characterized. Considering that organic compounds can be potentially served as energy source, I explored the feasibility of the usage of microbial fuel cell (MFC) technology for landfill leachate decomposition and power generation. Landfill leachate collected from landfills located in Northwest Florida was tested in a laboratory scale MFC to provide evidence that landfill leachate can be decomposed and electrons released from leachate decomposition in the anodic chamber can be transported and consumed in the cathodic chamber and consequently, electricity can be generated. Finally, I studied the interactions of bacteria with the porous media to explain microbial biofouling.

All the research work in this dissertation has been published in peer-reviewed technical papers, details of which are provided in Chapter 1.

Indexing (details)


Subject
Alternative Energy;
Microbiology;
Civil engineering
Classification
0363: Alternative Energy
0410: Microbiology
0543: Civil engineering
Identifier / keyword
Applied sciences; Biological sciences; Landfills; Microbial fuel cells; Microbial transport; Northwest Florida
Title
Microbial transport and the use of microbial fuel cell technology to prevent iron release in landfills nearby northwest Florida
Author
Subramaniam, Pawan Kumar
Number of pages
99
Publication year
2011
Degree date
2011
School code
0071
Source
DAI-B 73/01, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781124983417
Advisor
Chen, Gang
University/institution
The Florida State University
University location
United States -- Florida
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3483666
ProQuest document ID
902740949
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/902740949
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