期刊
BIORESOURCE TECHNOLOGY
卷 104, 期 -, 页码 81-89出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.10.053
关键词
Remediation; Pseudomonas stutzeri; Phenanthrene; Modeling; Biodegradation pathway
资金
- Spanish Ministry of Science and Innovation [CTQ2008-03059/PPQ]
- Xunta de Galicia
Polycyclic aromatic hydrocarbons (PAHs) are among the most persistent pollutants that accumulate in natural environment mainly as a result of anthropogenic activities. Therefore, the improvement of the available bank of microbial resources and information is crucial to the proper management of PAHs-polluted sites and effluents. In this work, Pseudomonas stutzeri CECT 930 was selected for aerobically degrading an aqueous effluent containing phenanthrene (PHE). Maximum PHE degradation of 90% was obtained both at flask and stirred tank bioreactor scale. All the experimental data were fitted to logistic and Luede-king and Piret models, and licensed to quantitatively ascertain a stronger dependence on the biomass of the metabolites triggering the bioremediation process. In addition, PHE degradation via protocatechuate pathway was elucidated through GC-MS data. Finally, based on the promising results of biodegradation, a preliminary economic evaluation of this process at industrial scale was approached by means of simulation data obtained with SuperPro Designer. (C) 2011 Elsevier Ltd. All rights reserved.
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