Environmental Microbiology and Microbial Ecology Commons^™

A Study On The Dissolution Of Autunite Minerals By Facultative Bacteria In Bicarbonate Media, Sandra C. Herrera Landaez

FIU Electronic Theses and Dissertations

Uranium (U) is a key contaminant at the Hanford site. The formation of uranyl-phosphate bearing minerals such as autunite as a result of tripoliphosphate injections has been used as a U immobilization strategy. Bacteria are known as key factors governing the fate and transport of soil contaminants. This research evaluated the interaction of facultative bacteria Shewanella Oneidensis MR-1 with autunite mineral in bicarbonate-amended media solutions. The concentration of several elements such as U, calcium (Ca) and phosphorous (P) released as a result of autunite mineral biodissolution were determined as a function of time; changes in cell density and protein assay …