Ecotoxicological assessment of bioremediation of a petroleum hydrocarbon-contaminated soil
- Univ. du Quebec, Montreal, Quebec (Canada). Inst. National de Recherche Scientifique sur l`Eau
- Analex Inc., Chomedey, Quebec (Canada)
- Ecole Polytechnique de Montreal, Quebec (Canada). Chemical Engineering Dept.
A battery of bioassays [barley seed germination, barley plant growth, lettuce seed germination, worm mortality, Microtox{reg_sign}, lettuce root elongation, algae Selenastrum capricornutum growth, Daphnia magna mortality, and SOS Chromotest ({+-}S9)] was used to assess an above-ground heap pile treatment of a soil contaminated with aliphatic petroleum hydrocarbons (12 to 24 carbons). Despite an initial oil and grease concentration of 2,000 mg/kg, no significant (geno)toxicity was apparent in the soil sample before treatment. During the treatment, which decreased oil and grease concentrations to 800 mg/kg, slight toxicity was revealed by three bioassays (barley seed germination, worm mortality, Daphnia magna mortality), and a significant increase in genotoxicity was measured with the SOS Chromotest ({+-} S9). It appears that ecotoxicological evaluation revealed harmful condition(s) that were not detected by chemical assessment. This suggests that the remediation had ceased before complete detoxification occurred. This phenomenon must be further investigated, however, to furnish solid conclusions on the toxicological effectiveness of the biotreatment.
- OSTI ID:
- 484969
- Report Number(s):
- CONF-950483-; ISBN 1-57477-009-8; TRN: 97:010833
- Resource Relation:
- Conference: 3. international in situ and on-site bioreclamation symposium, San Diego, CA (United States), 24-27 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Microbial processes for bioremediation; Hinchee, R.E.; Brockman, F.J. [eds.] [Battelle Memorial Inst., Columbus, OH (United States)]; Vogel, C.M. [ed.]; PB: 371 p.; Bioremediation, Volume 3(8)
- Country of Publication:
- United States
- Language:
- English
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