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Full-Text Articles in Environmental Sciences
Comparative Analysis Of Survival And Decay Of Fecal Indicator Bacteria In Bovine Feces And Freshwater Microcosms, Reem Tariq
Electronic Theses and Dissertations
Agricultural runoff can carry FIB that can pollute surface waters through the soil matrix. This study was designed to inspect the impact of temperature and matrix on the survival of FIB. The FIB were routinely enumerated over an 18-day period from fecal samples and freshwater microcosms maintained at 4oC, 22oC, and 35oC. It was found that the FIB studied underwent a primary growth of up to 1-log10 to 3-log10, highlighting the weakness of conventional FIB as indicators of pathogen contamination. The concentrations of FIB in the water phase were found to be significantly greater than those observed in the fecal …
Evaluating E. Coli Particle Attachment And The Impact On Transport During High Flows, Louis Amegbletor
Evaluating E. Coli Particle Attachment And The Impact On Transport During High Flows, Louis Amegbletor
Electronic Theses and Dissertations
Fecal indicator bacteria, including E. coli, are the leading cause of water quality impairments within assessed waters in the United States. The source of E. coli includes WWTP, leaking sewers, animal manure, wildlife, livestock, and stream bed sediment. Storm events contribute to bacteria loading within waters through wash-in of land sources of bacteria and resuspension of bacteria within sediments. Bacteria introduced into the water column are either attached to particles or are unattached (or free-living). The goal of this study was to examine the attachment of E. coli to different particle sizes, including their impact on contributing to water …