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106 results on '"oil-contaminated soil"'

36. Production of Ligninolytic Enzymes by White-rot Fungi during Bioremediation of Oil-contaminated Soil.

Author

Pozdnyakova, Natalia N., Dubrovskaya, Ekaterina V., Makarov, Oleg E., Nikitina, Valentina E., and Turkovskaya, Olga V.

Abstract

A number of white-rot fungi, including strains of Pleurotus ostreatus, Lentinus edodes, Coriolus sp., and Agaricus sp., were tested for the production of ligninolytic enzymes during decontamination of old oil-polluted industrial soil. The solid-state cultures of all studied fungi were able to grow and produce ligninolytic enzymes in the soil. The growth rates, the mycelium densities, the production of ligninolytic enzymes, and the degradation of old oil contamination decreased in the order Agaricus sp. > P. ostreatus > L. edodes > Coriolus sp. The most active producers of laccase and peroxidase were the strains of P. ostreatus and Agaricus sp. The production of peroxidase by the strains of L. edodes and Coriolus sp. was not found under the conditions used. The fungi that actively colonized the soil and produced ligninolytic enzymes also actively degraded old oil contamination in the soil. [ABSTRACT FROM AUTHOR]

Published
2011
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38. Study of Composition and Properties of Oil Pollution.

Author

Ongarbayev, Yerdos and Mansurov, Zulkhair

Abstract

The composition and physico-chemical characteristics of oil pollution are studied to develop an effective technology of recycling. The content of an organic phase varies from 5 up to 95 mass% and its content depends on the initial spilled oil. However, the content of high-molecular compounds in composition of an organic phase increases due to the effect of atmospheric factors. Study of oil pollution composition and properties will enable to reduce the existing accumulations of oil wastes and their harmful influence on the environment. [ABSTRACT FROM AUTHOR]

Published
2008
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41. Increase in Removal of Polycyclic Aromatic Hydrocarbons During Bioremediation of Crude Oil-Contaminated Sandy Soil.

Author

Davison, Brian H., Evans, Barbara R., Finkelstein, Mark, McMillan, James D., Oliveira, Fernando J. S., and De França, Francisca P.

Abstract

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. [ABSTRACT FROM AUTHOR]

Published
2005
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