KINETICS OF BIODEGRADATION OF DIESEL FUEL BY ENRICHED MICROBIAL CONSORTIA FROM POLLUTED SOILS

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MOLITERNI E.; JIMENEZ TUSSET R.G.; VILLAR RAYO M.; RODRIGUEZ L.; FERNANDEZ F.J.; VILLASENOR J.

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Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST) Year:2012 | Volume:9 | Issue:4 Page(s): 749-758

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Title

KINETICS OF BIODEGRADATION OF DIESEL FUEL BY ENRICHED MICROBIAL CONSORTIA FROM POLLUTED SOILS

Author(s)

Keywords

BIOLOGICAL TREATMENT

GROWTH KINETICS

HYDROCARBON

SOIL POLLUTION

Abstract

Three microbial consortia were isolated from three polluted soils located at an oil refinery and acclimated to grow on diesel fuel as the sole carbon source. Batch experiments were then conducted with the three consortia to study the kinetics of diesel biodegradation. The effects of temperature (25, 30 and 35oC) and diesel concentration (0.5, 1 and 3 %) on the biodegradation of diesel were analysed. Several species were identified in the acclimated microbial consortia, and some of them appeared in more than one consortium. Thermal inhibition was observed at 35oC. In the rest of experiments, over 80 % of the substrate was degraded after 40 h of treatment. These results proved the good feasibility of using the polluted sites as sources of mixed consortia for HYDROCARBON degradation. However, diesel degradation efficiencies and rates were very similar, suggesting that the acclimation process produced mixed consortia with very similar characteristics; in this context, origin of the soil sample was not a decisive factor. A simple Monod-type kinetic model was used to simulate the biodegradation process, and accurate results were obtained. The m max values were between 0.17 and 0.34 h-1. The results of this study revealed that the consortia can function at high concentrations of HYDROCARBONs without any sign of growth inhibition, which is important for the design of bioreactors for wastewater treatment with high concentrations of fuel.

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APA: Copy

MOLITERNI, E., JIMENEZ TUSSET, R.G., VILLAR RAYO, M., RODRIGUEZ, L., FERNANDEZ, F.J., & VILLASENOR, J.. (2012). KINETICS OF BIODEGRADATION OF DIESEL FUEL BY ENRICHED MICROBIAL CONSORTIA FROM POLLUTED SOILS. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), 9(4), 749-758. SID. https://sid.ir/paper/285415/en

Vancouver: Copy

MOLITERNI E., JIMENEZ TUSSET R.G., VILLAR RAYO M., RODRIGUEZ L., FERNANDEZ F.J., VILLASENOR J.. KINETICS OF BIODEGRADATION OF DIESEL FUEL BY ENRICHED MICROBIAL CONSORTIA FROM POLLUTED SOILS. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST)[Internet]. 2012;9(4):749-758. Available from: https://sid.ir/paper/285415/en

IEEE: Copy

E. MOLITERNI, R.G. JIMENEZ TUSSET, M. VILLAR RAYO, L. RODRIGUEZ, F.J. FERNANDEZ, and J. VILLASENOR, “KINETICS OF BIODEGRADATION OF DIESEL FUEL BY ENRICHED MICROBIAL CONSORTIA FROM POLLUTED SOILS,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), vol. 9, no. 4, pp. 749–758, 2012, [Online]. Available: https://sid.ir/paper/285415/en

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