Increase in removal of polycyclic aromatic hydrocarbons during bioremediation of crude oil-contaminated sandy soil
- 89 Downloads
A 23 full factorial experimental design was adopted to estimate the effects of three variables on the biodegradation of oil during soil bioremediation: bioaugmentation seeding a mixed culture, addition of fertilizer or mineral media, and correction of initial pH of the soil to 7.0. The tests were carried out in polyvinyl chloride reactors with 5.0 kg of crude oil-contaminated soil at 14 g/kg. After screening the variables, soil bioremediation tests were conduced with varied C:N ratios, yielding an increase in biodegradation of the oil heavy fraction from 24 to 65%, consumption of total n-paraffins, and a remarkable decrease in the concentration of residual polycyclic aromatic hydrocarbons of the soil.
Index EntriesSoil bioremediation crude oil hydrocarbons biodegradation experimental design
Unable to display preview. Download preview PDF.
- 3.Baker, K. H. and Herson, D. S. (1994), in Bioremediation, Baker, K. H. and Herson, D. S., eds., McGraw-Hill, New York, pp. 9–58.Google Scholar
- 10.Oliveira, F. J. S. and de França, F. P. (2004), Soil Rocks 27, 287–292.Google Scholar
- 15.Alexander, M. (1994), Biodegradation and Bioremediation, Academic, New York.Google Scholar
- 16.Lin, Q., Menselssohn, I. A., Henry, C. B. Jr., Roberts, P. O., Walsh, M. M., Overton, E. B., and Portier, R. J. (1999), Environ. Technol. 20, 825–837.Google Scholar