Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase

Producción Científica

Detalles Bibliográficos
Autores: Lebrero Fernández, Raquel, Roxana Ángeles, Pérez Fernández, Rebeca, Muñoz Torre, Raúl
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universidad de Valladolid
Repositorio:UVaDOC. Repositorio Documental de la Universidad de Valladolid
OAI Identifier:oai:uvadoc.uva.es:10324/23453
Acceso en línea:https://doi.org/10.1016/j.jenvman.2016.09.016
http://uvadoc.uva.es/handle/10324/23453
Access Level:acceso abierto
Palabra clave:Biodegradación
Tolueno
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spelling Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phaseLebrero Fernández, RaquelRoxana ÁngelesPérez Fernández, RebecaMuñoz Torre, RaúlBiodegradaciónToluenoProducción CientíficaThe potential of algal-bacterial symbiosis for off-gas abatement was investigated for the first time by comparatively evaluating the performance of a bacterial (CB) and an algal-bacterial (PB) airlift bioreactors during the treatment of a 6 g m−3 toluene laden air emission. The influence of biomass concentration and of the addition of a non-aqueous phase was also investigated. A poor and fluctuating performance was recorded during the initial stages of the experiment, which was attributed to the low biomass concentration present in both reactors and to the accumulation of toxic metabolites. In this sense, an increase in the dilution rate from 0.23 to 0.45 d−1 and in biomass concentration from ∼1 to ∼5 g L−1 resulted in elimination capacities (ECs) of 300 g m−3 h−1 (corresponding to removal efficiencies ∼ 90%). Microalgae activity allowed for a reduction in the emitted CO2 and an increase in dissolved O2 concentration in the PB. However, excess biomass growth over 11 g L−1 hindered light penetration and severely decreased photosynthetic activity. The addition of silicone oil at 20% (on a volume basis) stabilized system performance, leading to dissolved O2 concentrations of 7 mg L−1 and steady ECs of 320 g m−3 h−1 in the PB. The ECs here recorded were considerably higher than those previously reported in toluene-degrading bioreactors. Finally, microbial population analysis by DGGE-sequencing demonstrated the differential specialization of the microbial community in both reactors, likely resulting in different toluene degradation pathways and metabolites production.Ministerio de Economía, Industria y Competitividad (Proyect CTM2015-70442-R)Junta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA024U14 y UIC 71)Elsevier2016info:eu-repo/semantics/articleapplication/pdfhttps://doi.org/10.1016/j.jenvman.2016.09.016http://uvadoc.uva.es/handle/10324/23453reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolidinstname:Universidad de ValladolidIngléshttp://www.sciencedirect.com/science/journal/03014797info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:uvadoc.uva.es:10324/234532026-06-13T12:44:47Z
dc.title.none.fl_str_mv Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase
title Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase
spellingShingle Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase
Lebrero Fernández, Raquel
Biodegradación
Tolueno
title_short Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase
title_full Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase
title_fullStr Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase
title_full_unstemmed Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase
title_sort Toluene biodegradation in an algal-bacterial airlift photobioreactor: Influence of the biomass concentration and of the presence of an organic phase
dc.creator.none.fl_str_mv Lebrero Fernández, Raquel
Roxana Ángeles
Pérez Fernández, Rebeca
Muñoz Torre, Raúl
author Lebrero Fernández, Raquel
author_facet Lebrero Fernández, Raquel
Roxana Ángeles
Pérez Fernández, Rebeca
Muñoz Torre, Raúl
author_role author
author2 Roxana Ángeles
Pérez Fernández, Rebeca
Muñoz Torre, Raúl
author2_role author
author
author
dc.subject.none.fl_str_mv Biodegradación
Tolueno
topic Biodegradación
Tolueno
description Producción Científica
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.jenvman.2016.09.016
http://uvadoc.uva.es/handle/10324/23453
url https://doi.org/10.1016/j.jenvman.2016.09.016
http://uvadoc.uva.es/handle/10324/23453
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://www.sciencedirect.com/science/journal/03014797
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname:Universidad de Valladolid
instname_str Universidad de Valladolid
reponame_str UVaDOC. Repositorio Documental de la Universidad de Valladolid
collection UVaDOC. Repositorio Documental de la Universidad de Valladolid
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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