Evaluación de la bioestimulación de un consorcio microbiano para la degradación de PCB en suelo

Nancy johanna  Pino R.; Luisa  Munera; Gustavo  Peñuela

doi:10.17533/udea.hm.323246

Authors

Nancy johanna Pino R. University of Antioquia
Luisa Munera University of Antioquia
Gustavo Peñuela University of Antioquia

DOI:

https://doi.org/10.17533/udea.hm.323246

Keywords:

bioremediation, PCB, biostimulation, biodegradation

Abstract

In this work two microorganisms able to degrade polychlorinated biphenyl (PCB) were isolated from contaminated soil. The isolated microorganisms were identified as Pseudomonas spp. and Stenotrophomonasspp. In order to evaluate the efficiency of a bioaugmentation strategy for PCB contamination, PCB degrading microorganisms were inoculated into soil microcosms. PCB congeners 44, 66, 118, 138, 153, 170 and 180 were monitored during the bioremediation assay. In liquid culture using PCB as sole carbon source, removal percentages of 37%, 32,6%, and 15% were obtained for PCB 44, 66 and 118 respectively. Bioaugmentation assays were carried out using sterilized and non-sterilized soil, the highest removal percentages for all congeners were observed in sterilized soil, demonstrating the effect of native microorganism on the added inoculum.

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Author Biographies

Nancy johanna Pino R., University of Antioquia

School of Microbiology, University of Antioquia. Diagnosis and Pollution Control Group, Faculty of Engineering, University Research Center, University of Antioquia.

Luisa Munera, University of Antioquia

School of Microbiology, University of Antioquia.

Gustavo Peñuela, University of Antioquia

Diagnosis and Pollution Control Group, Faculty of Engineering, University Research Center, University of Antioquia.

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