Long-term simulation of in situ biostimulation of polycyclic aromatic hydrocarbon-contaminated soil.

ABSTRACT: A continuous-flow column study was conducted to evaluate the long-term effects of in situ biostimulation on the biodegradation of polycyclic aromatic hydrocarbons (PAHs) in soil from a manufactured gas plant site. Simulated groundwater amended with oxygen and inorganic nutrients was introduced into one column, while a second column receiving unamended groundwater served as a control. PAH and dissolved oxygen (DO) concentrations, as well as microbial community profiles, were monitored along the column length immediately before and at selected intervals up to 534 days after biostimulation commenced. Biostimulation resulted in significantly greater PAH removal than in the control condition (73% of total measured PAHs vs. 34%, respectively), with dissolution accounting for a minor amount of th

SUBMITTER: Richardson SD 

PROVIDER: S-EPMC4752832 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature