High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge

Biogas desulfurization can be performed by adsorption, although new materials are needed since commercial adsorbents are expensive. In this regard, three types of sewage-sludge were studied as precursors to obtain low-cost adsorbents in a previous paper, attaining the best precursor from a sewage-sl...

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Autores: González Aguilera, Paloma, Gutiérrez Ortiz, Francisco Javier
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/172610
Acceso en línea:https://hdl.handle.net/11441/172610
https://doi.org/10.1016/j.fuproc.2016.01.036
Access Level:acceso abierto
Palabra clave:Regeneration
Adsorption
Low-cost adsorbents
Hydrogen sulfide
Biogas
Desulfurization
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spelling High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludgeGonzález Aguilera, PalomaGutiérrez Ortiz, Francisco JavierRegenerationAdsorptionLow-cost adsorbentsHydrogen sulfideBiogasDesulfurizationBiogas desulfurization can be performed by adsorption, although new materials are needed since commercial adsorbents are expensive. In this regard, three types of sewage-sludge were studied as precursors to obtain low-cost adsorbents in a previous paper, attaining the best precursor from a sewage-sludge that was thermally treated up to 700 °C. However, it must be regenerated to make the process feasible. To find an economical and environmentally friendly regeneration process, an experimental design was performed aimed at minimizing the use of resources such as water consumption, time and the temperature required while achieving a high rate of regeneration. The selected in-situ regeneration consists of entering firstly steam at relatively low temperature (< 250 °C), against most of published studies, followed by a second step with air. Besides, it can be performed in only 20 min, giving a large feasibility to the overall continuous adsorption process, with very low energy cost and duration for the regeneration. As a relevant result, the thermally treated sewage-sludge was regenerated up to 14 times, and although the adsorption capacity decreased 2.7% on average in each adsorption/regeneration cycle, the cost relative to the adsorbent may be reduced to 20% of the cost of using fresh adsorbent.ElsevierIngeniería Química y Ambiental2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/172610https://doi.org/10.1016/j.fuproc.2016.01.036reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésFuel Processing Technology, 145, 148-156.https://www.sciencedirect.com/science/article/pii/S0378382016300352info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1726102026-06-17T12:51:07Z
dc.title.none.fl_str_mv High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge
title High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge
spellingShingle High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge
González Aguilera, Paloma
Regeneration
Adsorption
Low-cost adsorbents
Hydrogen sulfide
Biogas
Desulfurization
title_short High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge
title_full High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge
title_fullStr High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge
title_full_unstemmed High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge
title_sort High performance regenerative adsorption of hydrogen sulfide from biogas on thermally-treated sewage-sludge
dc.creator.none.fl_str_mv González Aguilera, Paloma
Gutiérrez Ortiz, Francisco Javier
author González Aguilera, Paloma
author_facet González Aguilera, Paloma
Gutiérrez Ortiz, Francisco Javier
author_role author
author2 Gutiérrez Ortiz, Francisco Javier
author2_role author
dc.contributor.none.fl_str_mv Ingeniería Química y Ambiental
dc.subject.none.fl_str_mv Regeneration
Adsorption
Low-cost adsorbents
Hydrogen sulfide
Biogas
Desulfurization
topic Regeneration
Adsorption
Low-cost adsorbents
Hydrogen sulfide
Biogas
Desulfurization
description Biogas desulfurization can be performed by adsorption, although new materials are needed since commercial adsorbents are expensive. In this regard, three types of sewage-sludge were studied as precursors to obtain low-cost adsorbents in a previous paper, attaining the best precursor from a sewage-sludge that was thermally treated up to 700 °C. However, it must be regenerated to make the process feasible. To find an economical and environmentally friendly regeneration process, an experimental design was performed aimed at minimizing the use of resources such as water consumption, time and the temperature required while achieving a high rate of regeneration. The selected in-situ regeneration consists of entering firstly steam at relatively low temperature (< 250 °C), against most of published studies, followed by a second step with air. Besides, it can be performed in only 20 min, giving a large feasibility to the overall continuous adsorption process, with very low energy cost and duration for the regeneration. As a relevant result, the thermally treated sewage-sludge was regenerated up to 14 times, and although the adsorption capacity decreased 2.7% on average in each adsorption/regeneration cycle, the cost relative to the adsorbent may be reduced to 20% of the cost of using fresh adsorbent.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/172610
https://doi.org/10.1016/j.fuproc.2016.01.036
url https://hdl.handle.net/11441/172610
https://doi.org/10.1016/j.fuproc.2016.01.036
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Fuel Processing Technology, 145, 148-156.
https://www.sciencedirect.com/science/article/pii/S0378382016300352
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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