Evaluation of bioventing on a gasoline–ethanol contaminated undisturbed residual soil

Remediation methods for environmental contamination problems based on physical or chemical processes frequently present low efficiency and/or high costs. On the other hand, biological treatment is being proved to be an accessible alternative for soil and water remediation. Bioventing is commonly use...

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Bibliographic Details
Published in:	Journal of hazardous materials Vol. 110; no. 1; pp. 63 - 76
Main Authors:	Österreicher-Cunha, Patricia, Vargas, Eurı́pedes do Amaral, Guimarães, Jean Rémy Davée, de Campos, Tácio Mauro Pereira, Nunes, Cassiane Maria Ferreira, Costa, Ariovaldo, Antunes, Franklin dos Santos, da Silva, Maria Isabel Pais, Mano, Denise Maria
Format:	Journal Article Conference Proceeding
Language:	English
Published:	Amsterdam Elsevier B.V 05-07-2004 Elsevier
Subjects:	Applied sciences Biodegradation, Environmental Bioremediation Complex Mixtures - chemistry Conservation of Natural Resources - methods Culturable microbiota Environmental Monitoring - methods Environmental Pollution - analysis Environmental Pollution - prevention & control Ethanol - analysis Ethanol - chemistry Exact sciences and technology Gasoline - analysis Gasoline–ethanol contamination General treatment and storage processes Ground penetrating radar Particle Size Pollution Residual soil Soil Microbiology Soil Pollutants - analysis Ventilation - methods Wastes Brazil, Rio de Janeiro Culturable microbiota Ground penetrating radar Bioremediation Residual soil Gasoline–ethanol contamination Hydrocarbon Microbiology Waste treatment Chemical method Spill Contamination Petroleum Aquifers Pollution Decontamination Surveillance Biological treatment Oxygenation Organic compounds Ground water
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Summary:	Remediation methods for environmental contamination problems based on physical or chemical processes frequently present low efficiency and/or high costs. On the other hand, biological treatment is being proved to be an accessible alternative for soil and water remediation. Bioventing is commonly used for petroleum hydrocarbon (PHC) spills. This process provides better subsurface oxygenation, thus stimulating degradation by indigenous microorganisms. In Brazil, gasoline and ethanol are routinely mixed; some authors suggest that despite gasoline high degradability, its degradation in the aquifer is hindered by the presence of much rapidly degrading ethanol. The present study evaluates a bioventing treatment of a gasoline–ethanol contaminated undisturbed residual soil from Rio de Janeiro. Contamination and treatment effects were monitored by conventional microbiology methods, chemical analysis, and ground penetrating radar (GPR) measurements. Results of culturable bacterial population counts show the effect of contamination and bioventing on the microbiota of gasoline and gasoline–ethanol containing soils; however, GPR responses to these variations are not conclusive and still need to be assessed.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0304-3894 1873-3336
DOI:	10.1016/j.jhazmat.2004.02.037