Artículo
Production of bioemulsifiers by Amycolatopsis tucumanensis DSM45259 and their potential application in remediation technologies forsoils contaminated with hexavalent chromium
Colin, Veronica Leticia
; Castro, María Fernanda; Amoroso, Maria Julia del R.
; Villegas, Liliana Beatriz
Fecha de publicación:
09/2013
Editorial:
Elsevier
Revista:
Journal of Hazardous Materials
ISSN:
0304-3894
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In recent years, increasing interest has been shown in the use of bioemulsifiers as washing agents thatcan enhance desorption of soil-bound metals. However, high production costs derived from the useof expensive substrates for formulation of the fermentation media represent the main challenge forfull, large-scale implementation of bioemulsifiers. This work reports on a first study of bioemulsifierproduction by the actinobacterium Amycolatopsis tucumanensis DSM 45259 using different carbon andnitrogen sources. Preliminary results on the potential use of these compounds as washing agents for soilscontaminated with Cu(II) and Cr(VI) are also presented. The best specific production was detected usingglycerol and urea as carbon and nitrogen substrates, respectively. However, with all of the substratesused during the batch assay, the bioemulsifiers showed high levels of stability at extreme conditions ofpH, temperature, and salt concentration. Under the current assay conditions, the bioemulsifiers werenot effective in removing Cu(II) from soil. However, they were able to mediate Cr(VI) recovery, with theremoval percentage doubled compared to that seen when using deionized water. These findings appearpromising for the development of remediation technologies for hexavalent chromium compounds basedupon direct use of these microbial emulsifiers.
Palabras clave:
Bioemulsifiers
,
Actinobacterium
,
Heavy Metals
,
Soil Washing
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos(INQUISAL)
Articulos de INST. DE QUIMICA DE SAN LUIS
Articulos de INST. DE QUIMICA DE SAN LUIS
Articulos(PROIMI)
Articulos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)
Articulos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)
Citación
Colin, Veronica Leticia; Castro, María Fernanda; Amoroso, Maria Julia del R.; Villegas, Liliana Beatriz; Production of bioemulsifiers by Amycolatopsis tucumanensis DSM45259 and their potential application in remediation technologies forsoils contaminated with hexavalent chromium; Elsevier; Journal of Hazardous Materials; 261; 9-2013; 577-583
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