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Surfactant enhances biodegradation of hydrocarbons: Microcosm and field study

Walter, M. V. / Nelson, E. C. / Firmstone, G. / Martin, D. G. / Clayton, M. J. / Simpson, S. / Spaulding, S.

The purpose of the present study was to provide new methods that would increase the rates of biodegradation of petroleum hydrocarbons in soil, thus reducing the time required to achieve a satisfactory level of residual hydrocarbon in an ex situ bioremediation. Results of laboratory studies on several techniques were used to guide our implementation of these methods in controlled field studies. Soils contaminated with nonvolatile hydrocarbons were treated with various combinations of (1) an anionic surfactant guanidinium cocoate (CGS), (2) a consortium of hydrocarbon‐degrading microorganisms, (3) a slow‐release form of nitrogen:urea, and (4) the bulking agent vermiculite. Laboratory results describing the activity of CGS have been presented previously (Jain et al., 1992). The amount and rate of hydrocarbon loss in treated soil was compared with hydrocarbon lost in soil that received no amendment other than water (water only). We also used a sheen screen method (Nelson et al., 1995), to assess the effectiveness of our field application of microorganisms.

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Surfactant enhances biodegradation of hydrocarbons: Microcosm and field study

Walter, M. V. / Nelson, E. C. / Firmstone, G. / Martin, D. G. / Clayton, M. J. / Simpson, S. / Spaulding, S.

The purpose of the present study was to provide new methods that would increase the rates of biodegradation of petroleum hydrocarbons in soil, thus reducing the time required to achieve a satisfactory level of residual hydrocarbon in an ex situ bioremediation. Results of laboratory studies on several techniques were used to guide our implementation of these methods in controlled field studies. Soils contaminated with nonvolatile hydrocarbons were treated with various combinations of (1) an anionic surfactant guanidinium cocoate (CGS), (2) a consortium of hydrocarbon‐degrading microorganisms, (3) a slow‐release form of nitrogen:urea, and (4) the bulking agent vermiculite. Laboratory results describing the activity of CGS have been presented previously (Jain et al., 1992). The amount and rate of hydrocarbon loss in treated soil was compared with hydrocarbon lost in soil that received no amendment other than water (water only). We also used a sheen screen method (Nelson et al., 1995), to assess the effectiveness of our field application of microorganisms.

Surfactant enhances biodegradation of hydrocarbons: Microcosm and field study

Walter, M. V. / Nelson, E. C. / Firmstone, G. / Martin, D. G. / Clayton, M. J. / Simpson, S. / Spaulding, S.

The purpose of the present study was to provide new methods that would increase the rates of biodegradation of petroleum hydrocarbons in soil, thus reducing the time required to achieve a satisfactory level of residual hydrocarbon in an ex situ bioremediation. Results of laboratory studies on several techniques were used to guide our implementation of these methods in controlled field studies. Soils contaminated with nonvolatile hydrocarbons were treated with various combinations of (1) an anionic surfactant guanidinium cocoate (CGS), (2) a consortium of hydrocarbon‐degrading microorganisms, (3) a slow‐release form of nitrogen:urea, and (4) the bulking agent vermiculite. Laboratory results describing the activity of CGS have been presented previously (Jain et al., 1992). The amount and rate of hydrocarbon loss in treated soil was compared with hydrocarbon lost in soil that received no amendment other than water (water only). We also used a sheen screen method (Nelson et al., 1995), to assess the effectiveness of our field application of microorganisms.

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Title:

Surfactant enhances biodegradation of hydrocarbons: Microcosm and field study

Contributors:

Walter, M. V. (author) / Nelson, E. C. (author) / Firmstone, G. (author) / Martin, D. G. (author) / Clayton, M. J. (author) / Simpson, S. (author) / Spaulding, S. (author)

Published in:

Journal of Soil Contamination ; 6 ; 61-77

Publication date:

1997-01-01

Size:

17 pages

ISSN:

DOI:

https://doi.org/10.1080/15320389709383546

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

Keywords:

biodegradation , petroleum hydrocarbons , bioremediation , microcosm

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