Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge

In conventional single-stage anaerobic digestion processes, hydrolysis is regarded as the rate-limiting step in the degradation of complex organic compounds, such as sewage sludge. Two-stage systems have been proposed to enhance this process. However, so far it is not clear which are the best condit...

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Autores: Ponsa Salas, Sergio|||0000-0001-5212-3860, Ferrer, Ivet|||0000-0002-4568-4843, Vázquez Lima, Felícitas, Font, Xavier|||0000-0003-4981-7436
Formato: artículo
Fecha de publicación:2008
País:España
Recursos:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:163066
Acesso em linha:https://ddd.uab.cat/record/163066
https://dx.doi.org/urn:doi:10.1016/j.watres.2008.07.002
Access Level:acceso abierto
Palavra-chave:Anaerobic digestion
Hydrolysis-acidogenesis
Thermophilic
Two-stage process
Volatile fatty acids
Waste sludge
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spelling Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludgeinfluence of pH and solid contentPonsa Salas, Sergio|||0000-0001-5212-3860Ferrer, Ivet|||0000-0002-4568-4843Vázquez Lima, FelícitasFont, Xavier|||0000-0003-4981-7436Anaerobic digestionHydrolysis-acidogenesisThermophilicTwo-stage processVolatile fatty acidsWaste sludgeIn conventional single-stage anaerobic digestion processes, hydrolysis is regarded as the rate-limiting step in the degradation of complex organic compounds, such as sewage sludge. Two-stage systems have been proposed to enhance this process. However, so far it is not clear which are the best conditions for a two-stage anaerobic digestion process of sewage sludge, in terms of temperature and hydraulic retention time of each stage. The aim of this work was to determine the optimal conditions for the hydrolytic-acidogenic stage treating real sludge with a high concentration of total solids (40-50 g L⁻¹) and volatile solids (25-30 g L⁻¹), named high concentration sludge. The variables considered for this first stage were: hydraulic retention time (1-4 days) and temperature (55 and 65 °C). Maximum volatile fatty acids generation was obtained at 4 days and 3 days hydraulic retention time for 55 °C and 65 °C, respectively. Consequently, 4 days hydraulic retention time and temperature of 55 °C were set as the working conditions for the hydrolytic-acidogenic stage treating high concentration sludge. The results obtained when operating with high concentration sludge were compared with a low concentration sludge consisting of 17-28 g L⁻¹ total solids and 13-21 g L⁻¹ volatile solids. The effect of decreasing the influent sludge pH, when working at the optimal conditions established, was also evaluated. 22008-01-0120082008-01-01Articlehttp://purl.org/coar/resource_type/c_6501SMURhttp://purl.org/coar/version/c_71e4c1898caa6e32info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/163066https://dx.doi.org/urn:doi:10.1016/j.watres.2008.07.002reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengMinisterio de Ciencia y Tecnología https://doi.org/10.13039/501100006280 REN2002-00926/TECNOopen accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:1630662026-06-06T12:50:31Z
dc.title.none.fl_str_mv Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge
influence of pH and solid content
title Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge
spellingShingle Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge
Ponsa Salas, Sergio|||0000-0001-5212-3860
Anaerobic digestion
Hydrolysis-acidogenesis
Thermophilic
Two-stage process
Volatile fatty acids
Waste sludge
title_short Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge
title_full Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge
title_fullStr Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge
title_full_unstemmed Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge
title_sort Optimization of the hydrolytic-acidogenic anaerobic digestion stage (55ºC) of sewage sludge
dc.creator.none.fl_str_mv Ponsa Salas, Sergio|||0000-0001-5212-3860
Ferrer, Ivet|||0000-0002-4568-4843
Vázquez Lima, Felícitas
Font, Xavier|||0000-0003-4981-7436
author Ponsa Salas, Sergio|||0000-0001-5212-3860
author_facet Ponsa Salas, Sergio|||0000-0001-5212-3860
Ferrer, Ivet|||0000-0002-4568-4843
Vázquez Lima, Felícitas
Font, Xavier|||0000-0003-4981-7436
author_role author
author2 Ferrer, Ivet|||0000-0002-4568-4843
Vázquez Lima, Felícitas
Font, Xavier|||0000-0003-4981-7436
author2_role author
author
author
dc.subject.none.fl_str_mv Anaerobic digestion
Hydrolysis-acidogenesis
Thermophilic
Two-stage process
Volatile fatty acids
Waste sludge
topic Anaerobic digestion
Hydrolysis-acidogenesis
Thermophilic
Two-stage process
Volatile fatty acids
Waste sludge
description In conventional single-stage anaerobic digestion processes, hydrolysis is regarded as the rate-limiting step in the degradation of complex organic compounds, such as sewage sludge. Two-stage systems have been proposed to enhance this process. However, so far it is not clear which are the best conditions for a two-stage anaerobic digestion process of sewage sludge, in terms of temperature and hydraulic retention time of each stage. The aim of this work was to determine the optimal conditions for the hydrolytic-acidogenic stage treating real sludge with a high concentration of total solids (40-50 g L⁻¹) and volatile solids (25-30 g L⁻¹), named high concentration sludge. The variables considered for this first stage were: hydraulic retention time (1-4 days) and temperature (55 and 65 °C). Maximum volatile fatty acids generation was obtained at 4 days and 3 days hydraulic retention time for 55 °C and 65 °C, respectively. Consequently, 4 days hydraulic retention time and temperature of 55 °C were set as the working conditions for the hydrolytic-acidogenic stage treating high concentration sludge. The results obtained when operating with high concentration sludge were compared with a low concentration sludge consisting of 17-28 g L⁻¹ total solids and 13-21 g L⁻¹ volatile solids. The effect of decreasing the influent sludge pH, when working at the optimal conditions established, was also evaluated.
publishDate 2008
dc.date.none.fl_str_mv 2
2008-01-01
2008
2008-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
SMUR
http://purl.org/coar/version/c_71e4c1898caa6e32
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/163066
https://dx.doi.org/urn:doi:10.1016/j.watres.2008.07.002
url https://ddd.uab.cat/record/163066
https://dx.doi.org/urn:doi:10.1016/j.watres.2008.07.002
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia y Tecnología https://doi.org/10.13039/501100006280 REN2002-00926/TECNO
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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