alexa Biodegradation of diesel biodiesel blends by a consortium of hydrocarbon degraders: effect of the type of blend and the addition of biosurfactants.
Environmental Sciences

Environmental Sciences

Journal of Petroleum & Environmental Biotechnology

Author(s): Owsianiak M, Chrzanowski , Szulc A, Staniewski J, Olszanowski A,

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Abstract Biodegradation experiments for diesel/biodiesel blends in liquid cultures by-petroleum degrading microbial consortium showed that for low amendments of biodiesel (10\%) the overall biodegradation efficiency of the mixture after seven days was lower than for petroleum diesel fuel. Preferential usage of methyl esters in the broad biodiesel concentration range and diminished biodegradation of petroleum hydrocarbons for 10\% biodiesel blend was confirmed. Rhamnolipids improved biodegradation efficiency only for blends with low content of biodiesel. Emulsion formation experiments showed that biodiesel amendments significantly affected dispersion of fuel mixtures in water. The presence of rhamnolipids biosurfactant affected stability of such emulsions and altered cell surface properties of tested consortium. This article was published in Bioresour Technol and referenced in Journal of Petroleum & Environmental Biotechnology

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