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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/16224
Título

Bioremediation by composting of heavy oil refinery sludge in semiarid conditions

AutorMarín, Antonio; Moreno, J. L. ; Hernández Fernández, María Teresa; García Izquierdo, Carlos
Palabras claveBioremediation
Composting
Ecotoxicity
Oil sludge
Fecha de publicaciónjun-2006
EditorSpringer
CitaciónBiodegradation 17(3): 251-261 (2006)
ResumenThe present work attempts to ascertain the efficacy of low cost technology (in our case, composting) as a bioremediation technique for reducing the hydrocarbon content of oil refinery sludge with a large total hydrocarbon content (250–300 g kg−1), in semiarid conditions. The oil sludge was produced in a refinery sited in SE Spain The composting system designed, which involved open air piles turned periodically over a period of 3 months, proved to be inexpensive and reliable. The influence on hydrocarbon biodegradation of adding a bulking agent (wood shavings) and inoculation of the composting piles with pig slurry (a liquid organic fertiliser which adds nutrients and microbial biomass to the pile) was also studied. The most difficult part during the composting process was maintaining a suitable level of humidity in the piles. The most effective treatment was the one in which the bulking agent was added, where the initial hydrocarbon content was reduced by 60% in 3 months, compared with the 32% reduction achieved without the bulking agent. The introduction of the organic fertiliser did not significantly improve the degree of hydrocarbon degradation (56% hydrocarbon degraded). The composting process undoubtedly led to the biodegradation of toxic compounds, as was demonstrated by ecotoxicity tests using luminescent bacteria and tests on plants in Petri dishes.
Descripción11 pages, 5 figures, 5 tables.
Versión del editorhttp://dx.doi.org/10.1007/s10532-005-5020-2
URIhttp://hdl.handle.net/10261/16224
DOI10.1007/s10532-005-5020-2
ISSN1572-9729 (Online)
0923-9820 (Print)
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