PROIMI   05436
PLANTA PILOTO DE PROCESOS INDUSTRIALES MICROBIOLOGICOS
Unidad Ejecutora - UE
artículos
Título:
Simultaneous bioremediation of Cr(VI) and lindane in soil by actinobacteria
Autor/es:
POLTI, MARTA ALEJANDRA; APARICIO, JUAN DANIEL; BENIMELI, CLAUDIA SUSANA; AMOROSO, MARÍA JULIA DEL ROSARIO
Revista:
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2014 p. 48 - 55
ISSN:
0964-8305
Resumen:
Environments co-contaminated with metals and organic compounds are difficult to remediate. Actinobacteriais an important group of microorganisms found in soils, with high metabolic versatility andpotential for bioremediation. In this paper, actinobacteria were used to remediate soil co-contaminatedwith Cr(VI) and lindane. Five actinobacteria, tolerant to Cr(VI) and lindane mixture were selected:Streptomyces spp. A5, A11, M7, and MC1, and Amycolatopsis tucumanensis DSM 45259. Sterilized soilsamples were inoculated with actinobacteria strains, either individually or as a consortium, andcontaminated with Cr(VI) and lindane, either immediately or after 7 days of growth, and incubated at30 C during 14 days. All actinobacteria were able to grow and remove both contaminants, the consortiumformed by Streptomyces spp. A5, M7, MC1, and A. tucumanensis showed the highest Cr(VI)removal, while Streptomyces sp. M7 produced the maximum lindane removal. In non-sterile soil samples,Streptomyces sp. M7 and the consortium removed more than 40% of the lindane, while Streptomyces sp.M7 demonstrated the greatest Cr(VI) removal. The most appropriate strategy for bioremediation of Cr(VI)and lindane co-contaminated soils would be the inoculation with Streptomyces sp. M7.