Laboratory and field microcosms as useful experimental systems to study the bioaugmentation treatment of tannery effluents.

Autor: Fernandez M; Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina. Electronic address: mfernandez@exa.unrc.edu.ar., Paisio CE; Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina. Electronic address: cpaisio@exa.unrc.edu.ar., Perotti R; Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina. Electronic address: rperotti@exa.unrc.edu.ar., Pereira PP; Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina. Electronic address: ppereira@exa.unrc.edu.ar., Agostini E; Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina. Electronic address: eagostini@exa.unrc.edu.ar., González PS; Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina. Electronic address: pgonzalez@exa.unrc.edu.ar.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2019 Mar 15; Vol. 234, pp. 503-511. Date of Electronic Publication: 2019 Jan 12.
DOI: 10.1016/j.jenvman.2019.01.019
Abstrakt: Tannery effluents require effective treatment prior to their final disposal, and the use of native bacterial consortia could be an appropriate strategy for this purpose. In the present work, consortium SFC 500-1 was found to be highly tolerant to different metals, metalloids and aromatic compounds like phenols. It was also able to remove the black dye commonly used in tanneries. Moreover, it promoted a significant reduction in chemical oxygen demand and exhibited high capability for the simultaneous removal of Cr(VI) and phenol. However, the effectiveness of the remediation processes markedly varied from one experimental system (Erlenmeyer flasks) to another (field microcosm system), highlighting the importance of moving from a small-scale study system to one involving more realistic environmental scenarios. In addition, we found a decrease in the toxicity of the effluent treated with consortium SFC 500-1. Taken together, our results indicate that this consortium possesses great potential for the treatment of tannery effluents. We conclude that for the development of a bioremediation strategy, it is necessary to develop experiments at a larger scale under conditions similar to those of the original system, in order to complete the scenario first created by in vitro approaches.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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