ER-1422: Biodegradation of 1,4-Dioxane.

摘要

The specific goals of this project were: 1) to evaluate biodegradation of 1,4-dioxane in environmental samples under different redox and chemical/physical conditions and different treatment regimes; 2) identify and isolate new 1,4-dioxane degrading microbes from environmental microcosms; 3) identify the products of 1,4-dioxane biodegradation by studying degradation pathways in pure bacterial cultures; 4) confirm that the same biodegradation pathways occur in active environmental samples; and 5) identify and evaluate genes involved in 1,4-dioxane biodegradation Biodegradation of 1,4-dioxane in environmental samples was performed by utilizing microcosms constructed with samples from two hydrogeochemically different 1,4-dioxane-contaminated aquifers. The 1,4-dioxane biodegradation pathways were determined by elucidating 1,4-dioxane degradation products produced by bacterial strains ENV425, ENV473, and ENV478.