Biostimulation Combined Treatments For
Remediation Of Diesel Contaminated Soil
Author(s)
C. Calvo, G. A. Silva-Castro, I. Uad, M. Manzanera,
C. Perucha, J. Laguna & J. Gónzalez-López
Abstract
Bioremediation is an important technology for the restoration of oil polluted
environments by indigenous or selected microorganisms. In general, the rate of
biodegradation depends on the number and types of microorganisms, the nature
and chemical structure of pollutants to be degraded and the environmental
conditions. In this study we have evaluated the efficacy of the application of four
different biostimulation treatments for the biodegradation of diesel contaminated
soils. The treatments applied involved: (a) the addition of NPK fertilizer + Ivey I
surfactant; (b) the addition of NPK fertilizer + Ethanol; (c) the addition of NPK
fertilizer + Biorem; and (d) oxidation by Fenton’s reagent combined with NPK
fertilizer. Microbial activity was evaluated following growth of heterotrophic
and degrading microorganisms, dehydrogenase activity and CO2 production.
Hydrocarbons degradation was established by determination of TPH, alkanes,
branched alkanes, pristane and phytane by GC/MS. Our results have shown that
the application of NPK fertilizer in combination with Ivey surfactant is an
efficient treatment to be applied in clay soil. Treatment with Fenton’s reagent
previous to the application of NPK fertilizer also efficiently enhanced
hydrocarbon biodegradation in saturated conditions.
Keywords: bioremediation, hydrocarbon pollution, surfactant, Fenton reagent.
1 Introduction
Bioremediation offers a more environmentally friendly alternative by taking
advantage of the oil degrading microorganisms and by establishing and
Keywords
bioremediation, hydrocarbon pollution, surfactant, Fenton reagent
Related Book
Other papers in this volume
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