Moscoso F, Deive FJ, Longo MA, Sanromán MA. Technoeconomic assessment of phenanthrene degradation by Pseudomonas stutzeri CECT 930 in a batch bioreactor.
BIORESOURCE TECHNOLOGY 2012;
104:81-89. [PMID:
22074903 DOI:
10.1016/j.biortech.2011.10.053]
[Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Revised: 10/14/2011] [Accepted: 10/16/2011] [Indexed: 05/31/2023]
Abstract
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 Luedeking 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.
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