A review on slurry bioreactors for bioremediation of soils and sediments |
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Authors: | Ireri V Robles-González Fabio Fava Héctor M Poggi-Varaldo |
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Affiliation: | 1.Dept. Biotechnology and Bioengineering,CINVESTAV-IPN, Environmental Biotechnology R&D Group,México D.F.,México;2.Alma Mater Studiorum-University of Bologna; Faculty of Engineering,Bologna,Italy |
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Abstract: | The aim of this work is to present a critical review on slurry bioreactors (SB) and their application to bioremediation of soils and sediments polluted with recalcitrant and toxic compounds. The scope of the review encompasses the following subjects: (i) process fundamentals of SB and analysis of advantages and disadvantages; (ii) the most recent applications of SB to laboratory scale and commercial scale soil bioremediation, with a focus on pesticides, explosives, polynuclear aromatic hydrocarbons, and chlorinated organic pollutants; (iii) trends on the use of surfactants to improve availability of contaminants and supplementation with degradable carbon sources to enhance cometabolism of pollutants; (iv) recent findings on the utilization of electron acceptors other than oxygen; (v) bioaugmentation and advances made on characterization of microbial communities of SB; (vi) developments on ecotoxicity assays aimed at evaluating bioremediation efficiency of the process. |
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