Landfarming in a PAH-contaminated soil.
The present work describes a coke oven soil treatability study by land-farming, conducted on-site in a field scale facility covering 100 m2. The soil contamination was mainly due to high concentrations of polynuclear aromatic hydrocarbons (PAHs) up to 1,140 mg/Kg dry weight (sigma EPA). Along the treatment process the soil was characterised at the chemical, microbiological and ecotoxicological levels. After 3 months a reduction of 63% in total PAHs concentration was observed, being detected a more pronounced reduction for PAHs with 2, 3 and 4 rings (79%). Concomitantly, a change in the composition of the microbial population was observed with a significant increase in the PAHs degrading and total heterotrophic colonies. Concerning the ecotoxicity and genotoxicity data no effect was detected in the treated soil samples eluates.
Picado
A
A
Instituto Nacional de Engenharia e Tecnologia Industrial, Lisboa, Portugal.
Nogueira
A
A
Baeta-Hall
L
L
Mendonça
E
E
de Fátima Rodrigues
M
M
do Céu Sàágua
M
M
Martins
A
A
Anselmo
A M
AM
D001673:Biodegradation, Environmental; D009152:Mutagenicity Tests; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D011174:Portugal; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000032:analysis*
D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants