alexa Bioremediation of petroleum hydrocarbon-contaminated soil by composting in biopiles.
Environmental Sciences

Environmental Sciences

Journal of Bioremediation & Biodegradation

Author(s): Jrgensen KS, Puustinen J, Suortti AM

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Abstract Composting of contaminated soil in biopiles is an ex situ technology, where organic matter such as bark chips are added to contaminated soil as a bulking agent. Composting of lubricating oil-contaminated soil was performed in field scale ( [Formula: see text] m(3)) using bark chips as the bulking agent, and two commercially available mixed microbial inocula as well as the effect of the level of added nutrients (N,P,K) were tested. Composting of diesel oil-contaminated soil was also performed at one level of nutrient addition and with no inoculum. The mineral oil degradation rate was most rapid during the first months, and it followed a typical first order degradation curve. During 5 months, composting of the mineral oil decreased in all piles with lubrication oil from approximately 2400 to 700 mg (kg dry w)(-1), which was about 70\% of the mineral oil content. Correspondingly, the mineral oil content in the pile with diesel oil-contaminated soil decreased with 71\% from 700 to 200 mg (kg dry w)(-1). In this type of treatment with addition of a large amount of organic matter, the general microbial activity as measured by soil respiration was enhanced and no particular effect of added inocula was observed.
This article was published in Environ Pollut and referenced in Journal of Bioremediation & Biodegradation

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