Microbial Application proven to work in cleaning up oil spills

FINLAND: BIOSTIMULATION PROVED TO BE AN EFFICIENT METHOD IN THE COMPARISON OF IN SITU SOIL REMEDIATION TREATMENTS AFTER A SIMULATED OIL SPILL ACCIDENT September 21 – Researchers compared biostimulation, chemical oxidation, and natural attenuation treatments in freshly contaminated conditions at pilot scale during a 16-month experiment. A real fuel spill accident provided a model for the experiment setup and soil contamination. Biostimulation was found to decrease contaminant leaching into water significantly, including NAPL. Total NAPL leachate was 19% lower in the biostimulation treatment than in untreated soil and 34% lower with biostimulation than with oxidation treatment. Soil bacterial growth and community changes were first observed due to the increased carbon content via oil amendment and later due to enhanced nutrient content via biostimulation. Overall, biostimulation enhanced biodegradation of readily available oil in the mobile phase and consequently reduced contaminant migration through the soil. Chemical oxidation did not enhance soil cleanup and even mobilized contaminants. Simpanen, S., M. Dahl, M. Gerlach, A. Mikkonen, V. Malk, J. Mikola, and M. Romantschuk. Environmental Science and Pollution Research 23(24):25024-25038(2016) This paper is Open Access at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5124059/ For additional information on this study see S. Simpanen’s dissertation at https://helda.helsinki.fi/handle/10138/168815. Technology Innovation News Survey https://clu-in.org/products/tins/

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