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Artículo

Bioprocess conditions for treating mineral transformer oils contaminated with polychlorinated biphenyls (PCBs)

Sadañoski, Marcela AlejandraIcon ; Benitez, Silvana FlorenciaIcon ; Velázquez, Juan ErnestoIcon ; Fonseca, Maria IsabelIcon ; Zapata, Pedro DarioIcon ; Levin, Laura NoemíIcon ; Villalba, Laura Lidia
Fecha de publicación: 10/2020
Editorial: Elsevier Ltd
Revista: Journal of Environmental Chemical Engineering
ISSN: 2213-2929
e-ISSN: 2213-3437
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Bioremediación, Diagnóstico Biotecnológico en Gestión Medioambiental

Resumen

This work was aimed at developing a bioprocess for the mycoremediation of polychlorinated biphenyls (PCBs) and generating a matching early stage mass and energy balance approach to be applied in a large-scale process. Irpex lacteus BAFC 1171 and Trametes sanguinea LBM 023 capacity for PCBs biodegradation was tested under two different nutritional conditions, with 217 mg L−1 of a technical mixture of Aroclor 1242, 1254 and 1260 in oil transformer. Mass and energy balances were calculated based on a generic model developed for early stages of microbial bioprocesses estimation, employing a low-cost culture medium. Both strains not only demonstrated ability to growth, but also degraded about 68% of the PCBs mixture in an N-limited liquid medium after 35 days of incubation at 29 ± 1 °C under static conditions. PCBs addition at 217 mg L-1 modified fungal morphology, biomass, glucose consumption, proteins and laccase secretion. A 3-fold increase in protein content was observed in complex medium in PCBs presence, whereas PCBs supplementation enhanced laccase production by T. sanguinea, 5- and 40-fold in both culture media. Both strains produced approx. 34% of bioemulsifiers in absence of PCBs after 21 days of treatment, but only I. lacteus secreted them in pollutants presence (20% after 28 days). This approach provides an insight into a mycoremediation process applied to treat PCBs mineral oil.
Palabras clave: WHITE-ROT FUNGI , POLYCHLORINATED BIPHENYLS , BIODEGRADATION , BIOEMULSIFIERS , BIOPROCESS
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/115620
URL: https://linkinghub.elsevier.com/retrieve/pii/S2213343720304164
DOI: https://doi.org/10.1016/j.jece.2020.104068
Colecciones
Articulos(CCT - NORDESTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NORDESTE
Citación
Sadañoski, Marcela Alejandra; Benitez, Silvana Florencia; Velázquez, Juan Ernesto; Fonseca, Maria Isabel; Zapata, Pedro Dario; et al.; Bioprocess conditions for treating mineral transformer oils contaminated with polychlorinated biphenyls (PCBs); Elsevier Ltd; Journal of Environmental Chemical Engineering; 8; 5; 10-2020; 1-10
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