Journal
BIORESOURCE TECHNOLOGY
Volume 119, Issue -, Pages 270-276Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.05.095
Keywords
Biodegradation; Consortium; PAHs; Stirred tank bioreactor; Cometabolism
Funding
- Spanish Ministry of Science and Innovation [CTQ2008-03059/PPQ]
- Xunta de Galicia through an Isidro Parga Pondal contract
Ask authors/readers for more resources
In this work, the biodegradation of three polycyclic aromatic hydrocarbons (PAHs) such as Phenanthrene (PHE), Pyrene (PYR) and Benzo[a]anthracene (BaA) has been investigated. A bacterial consortium consisting of two strains was used for the first time based on preliminary promising biodegradation data. They were tentatively identified as Staphylococcus warneri and Bacillus pumilus. Degradation values higher than 85% were obtained for each single PAH when operating at flask scale, whereas minimum levels of 90% of PAHs removal were obtained after just 3 days of cultivation at bioreactor scale. The operation in cometabolic conditions led to maximum levels about 75% and 100% at flask and bioreactor scale, respectively. All the experimental data were analyzed in the light of logistic and Luedeking and Piret type models, with the purpose to better characterize the biodegradation process by S. warned and B. pumilus. Finally, the metabolic pathway followed to degrade each PAH was ascertained. (C) 2012 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available