Recovery of phenanthrene-degrading bacteria after simulated in situ persulfate oxidation in contaminated soil.

ABSTRACT: A continuous-flow column study was conducted to investigate the long-term effects of persulfate oxidation on the abundance and activity of the indigenous microbial community and phenanthrene-degrading bacteria in contaminated soil from a former manufactured gas plant (MGP) site. Approximately six pore volumes of a 20 g/L persulfate solution were introduced into the column, followed by simulated groundwater for 500 days. Soil samples were collected from the surface of the soil bed and along the column length immediately before and after persulfate injection and up to 500 days following injection. Exposure to persulfate led to a 2- to 3-log reduction in total bacterial 16S rRNA genes, severe inhibition of (14)C-acetate mineralization (as a measure of general microbial activity), and a decrea

SUBMITTER: Richardson SD 

PROVIDER: S-EPMC3021091 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature