Production of added value bacterial lipids through valorisation of hydrocarbon-contaminated cork waste.
Sci Total Environ
; 605-606: 677-682, 2017 Dec 15.
Article
em En
| MEDLINE
| ID: mdl-28675877
ABSTRACT
This work demonstrates that cork used as oil-spill sorbents, contaminated with liquid hydrocarbons, herein demonstrated with hexadecane, can be biologically treated by Rhodococcus opacus B4 with concomitant lipids production. R. opacus B4 consumed up to 96% of hexadecane (C16) impregnated in natural and regranulated cork sorbents after 48h incubation, producing 0.59±0.06g of triacylglycerol (TAG) g-1 of C16 consumed with a TAG content of 0.60±0.06gg-1 of cellular dry weight (CDW) and 0.54±0.05g TAG g-1 of C16 consumed with a TAG content of 0.77±0.04gg-1 (CDW), respectively. TAG was mainly composed by fatty acids of 16 and 18 carbon chains demonstrating the feasibility of using it as raw material for biodiesel production. In addition, the obtained lipid-rich biomass (whole cells) can be used for biomethane production, at a yield of 0.4L CH4 g-1 (CDW). The obtained results support a novel approach for management of oil-spill contaminated cork sorbents through its valorisation by producing bacterial lipids, which can be used as feedstocks for biofuels production.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Triglicerídeos
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Biodegradação Ambiental
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Rhodococcus
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Biocombustíveis
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Hidrocarbonetos
Idioma:
En
Revista:
Sci Total Environ
Ano de publicação:
2017
Tipo de documento:
Article