Microbial characterization of a facultative residual sludge obtained from a biogas plant with ability to degrade commercial B10 diesel oil

Abstract: Biodegradation of commercial B10 diesel oil (DB10) by the microbial consortium present in a biogas residual sludge was first investigated. Maximum removal efficiencies of the petrochemical and fatty acids methyl ester (FAME) fractions of DB10 were 55 ± 3% and 94 ± 6%, respectively. Taxonom...

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Autores principales: Loureiro, Dana Belén, Olivera, Camila, Tondo, María Laura, Herrero, María Sol, Salvatierra, Lucas Matías, Pérez, Leonardo Martín
Formato: Artículo
Lenguaje:Inglés
Publicado: Elsevier 2020
Materias:
BIODEGRADACION
DIESEL
HIDROCARBUROS
BIOGAS
Acceso en línea:https://repositorio.uca.edu.ar/handle/123456789/10089
Aporte de:
Repositorio Institucional de la Universidad Católica Argentina (UCA) de Universidad Católica Argentina
id I33-R139123456789-10089
record_format dspace
institution Universidad Católica Argentina
institution_str I-33
repository_str R-139
collection Repositorio Institucional de la Universidad Católica Argentina (UCA)
language Inglés
topic BIODEGRADACION
DIESEL
HIDROCARBUROS
BIOGAS
spellingShingle BIODEGRADACION
DIESEL
HIDROCARBUROS
BIOGAS
Loureiro, Dana Belén
Olivera, Camila
Tondo, María Laura
Herrero, María Sol
Salvatierra, Lucas Matías
Pérez, Leonardo Martín
Microbial characterization of a facultative residual sludge obtained from a biogas plant with ability to degrade commercial B10 diesel oil
topic_facet BIODEGRADACION
DIESEL
HIDROCARBUROS
BIOGAS
description Abstract: Biodegradation of commercial B10 diesel oil (DB10) by the microbial consortium present in a biogas residual sludge was first investigated. Maximum removal efficiencies of the petrochemical and fatty acids methyl ester (FAME) fractions of DB10 were 55 ± 3% and 94 ± 6%, respectively. Taxonomic profiling of the microbial consortium present in the residual sludge was carried out in order to identify potential hydrocarbon-degrading bacteria. After mild selection pressure using DB10, three Pseudomonas species (P. aeruginosa, P. stutzeri and P. mendocina) were mostly found in the treated sample. However, only P. aeruginosa and P. stutzeri showed a rapid growth and high dehydrogenase activity at the expense of DB10 as the sole carbon source. In addition, both strains removed 42 ± 5% and 53 ± 2% of the petrochemical fraction, and >75% of the FAME fraction, respectively. Similar results were found with a bacterial consortium of the three isolated Pseudomonas, indicating no synergistic hydrocarbon degradation by these strains. As expected, biosurfactant production by the pseudomonads was directly associated with the bacterial DB10 biodegradation performance. These results are the first describing petroleum-based hydrocarbon biodegradation ability of a crude facultative residual sludge obtained from a biogas facility; and represent a rational first step in order to understand which bacteria in the sludge may act in petroleum-based fuels degradation.
format Artículo
author Loureiro, Dana Belén
Olivera, Camila
Tondo, María Laura
Herrero, María Sol
Salvatierra, Lucas Matías
Pérez, Leonardo Martín
author_facet Loureiro, Dana Belén
Olivera, Camila
Tondo, María Laura
Herrero, María Sol
Salvatierra, Lucas Matías
Pérez, Leonardo Martín
author_sort Loureiro, Dana Belén
title Microbial characterization of a facultative residual sludge obtained from a biogas plant with ability to degrade commercial B10 diesel oil
title_short Microbial characterization of a facultative residual sludge obtained from a biogas plant with ability to degrade commercial B10 diesel oil
title_full Microbial characterization of a facultative residual sludge obtained from a biogas plant with ability to degrade commercial B10 diesel oil
title_fullStr Microbial characterization of a facultative residual sludge obtained from a biogas plant with ability to degrade commercial B10 diesel oil
title_full_unstemmed Microbial characterization of a facultative residual sludge obtained from a biogas plant with ability to degrade commercial B10 diesel oil
title_sort microbial characterization of a facultative residual sludge obtained from a biogas plant with ability to degrade commercial b10 diesel oil
publisher Elsevier
publishDate 2020
url https://repositorio.uca.edu.ar/handle/123456789/10089
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