Bioavailability of (Geno)toxic Contaminants in Polycyclic Aromatic Hydrocarbon-Contaminated Soil Before and After Biological Treatment.

ABSTRACT: Contaminated soil from a former manufactured-gas plant site was treated in a laboratory-scale bioreactor. Desorbability and biodegradability of 14 polycyclic aromatic hydrocarbons (PAHs) and 4 oxygenated PAHs (oxy-PAHs) were investigated throughout a treatment cycle. Desorbability was determined using a mixed-function sorbent (Oasis^® HLB) or a hydrophobic sorbent (Tenax^®) in dialysis tubing suspended in the soil slurry. Toxicity and genotoxicity of the whole soil and the desorbable fractions were determined by DNA damage response analysis with the chicken DT40 B-lymphocyte isogenic cell line and its DNA repair-deficient mutant Rad54^-/-. Biological treatment significantly removed both PAHs and oxy-PAHs, and their desorbability decreased throughout the

SUBMITTER: Hu J 

PROVIDER: S-EPMC3993035 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature