期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 23, 页码 11003-11010出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.09.074
关键词
Biodegradation; Biosurfactants; Oily sludge; Consortium; Hydrocarbons
资金
- FAPERGS (Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul)
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior)
The biodegradation capacity of aliphatic and aromatic hydrocarbons of petrochemical oily sludge in liquid medium by a bacterial consortium and five pure bacterial cultures was analyzed. Three bacteria isolated from petrochemical oily sludge, identified as Stenotrophomonas acidaminiphila, Bacillus megaterium and Bacillus cibi, and two bacteria isolated from a soil contaminated by petrochemical waste, identified as Pseudomonas aeruginosa and Bacillus cereus demonstrated efficiency in oily sludge degradation when cultivated during 40 days. The bacterial consortium demonstrated an excellent oily sludge degradation capacity, reducing 90.7% of the aliphatic fraction and 51.8% of the aromatic fraction, as well as biosurfactant production capacity, achieving 39.4% reduction of surface tension of the culture medium and an emulsifying activity of 55.1%. The results indicated that the bacterial consortium has potential to be applied in bioremediation of petrochemical oily sludge contaminated environments, favoring the reduction of environmental passives and increasing industrial productivity. (C) 2011 Elsevier Ltd. All rights reserved.
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