Pollutants removal onto novel activated carbons made from lignocellulosic precursors

Detalhes bibliográficos
Autor(a) principal: Valente Nabais, Joao
Data de Publicação: 2009
Outros Autores: Laginhas, Carlos, Carrott, Manuela, Carrott, Peter, Gomes, Jose, Suhas, Suhas, Ramires, Ana, Roman, Silvia
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/6573
Resumo: The adsorption of phenol and mercury from dilute aqueous solutions onto new activated carbons was studied. These included activated carbons produced from novel precursors, namely rapeseed, vine shoots and kenaf, and samples oxidised with nitric acid in liquid phase. The results have shown the significant potential of rapeseed, vine shoots and kenaf for the activated carbon production. The activated carbons produced by carbon dioxide activation were mainly microporous with BET apparent surface area up to 1224m2g-1 and pore volume 0.5cm3g-1. The effects of concentration and pH were studied. The phenol adsorption isotherms at 25ºC followed the Freundlich model with maximum adsorption capacities of approximately 80mgg-1 and 60mgg-1 for the pristine and oxidised activated carbons, respectively. The influence of pH on the phenol adsorption has two trends for pH smaller and bigger than 10. The maximum adsorption capacity of mercury adsorption onto activated carbon made from vine shoots reaches 1103mgg-1. The adsorption depends on the mercury species and the on the adsorbent properties, namely porosity and net surface charge.
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spelling Pollutants removal onto novel activated carbons made from lignocellulosic precursorsadsorptionactivated carbonThe adsorption of phenol and mercury from dilute aqueous solutions onto new activated carbons was studied. These included activated carbons produced from novel precursors, namely rapeseed, vine shoots and kenaf, and samples oxidised with nitric acid in liquid phase. The results have shown the significant potential of rapeseed, vine shoots and kenaf for the activated carbon production. The activated carbons produced by carbon dioxide activation were mainly microporous with BET apparent surface area up to 1224m2g-1 and pore volume 0.5cm3g-1. The effects of concentration and pH were studied. The phenol adsorption isotherms at 25ºC followed the Freundlich model with maximum adsorption capacities of approximately 80mgg-1 and 60mgg-1 for the pristine and oxidised activated carbons, respectively. The influence of pH on the phenol adsorption has two trends for pH smaller and bigger than 10. The maximum adsorption capacity of mercury adsorption onto activated carbon made from vine shoots reaches 1103mgg-1. The adsorption depends on the mercury species and the on the adsorbent properties, namely porosity and net surface charge.Carbon 20092012-12-06T19:45:01Z2012-12-062009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/6573http://hdl.handle.net/10174/6573engJ.M. Valente Nabais, C. Laginhas, P.J.M. Carrott, M.M. Ribeiro Carrott, J.A. Gomes, Suhas, A. Ramires, S. Roman, Pollutants removal onto novel activated carbons made from lignocellulosic precursors”, Carbon 2009 (M. Monthioux, Edt.) Groupe Français d’Etude des Carbones, Biarritz (2009), Short Abstract pag 159,jvn@uevora.ptndndndndndndnd252Valente Nabais, JoaoLaginhas, CarlosCarrott, ManuelaCarrott, PeterGomes, JoseSuhas, SuhasRamires, AnaRoman, Silviainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:45:34Zoai:dspace.uevora.pt:10174/6573Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:01:03.696495Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Pollutants removal onto novel activated carbons made from lignocellulosic precursors
title Pollutants removal onto novel activated carbons made from lignocellulosic precursors
spellingShingle Pollutants removal onto novel activated carbons made from lignocellulosic precursors
Valente Nabais, Joao
adsorption
activated carbon
title_short Pollutants removal onto novel activated carbons made from lignocellulosic precursors
title_full Pollutants removal onto novel activated carbons made from lignocellulosic precursors
title_fullStr Pollutants removal onto novel activated carbons made from lignocellulosic precursors
title_full_unstemmed Pollutants removal onto novel activated carbons made from lignocellulosic precursors
title_sort Pollutants removal onto novel activated carbons made from lignocellulosic precursors
author Valente Nabais, Joao
author_facet Valente Nabais, Joao
Laginhas, Carlos
Carrott, Manuela
Carrott, Peter
Gomes, Jose
Suhas, Suhas
Ramires, Ana
Roman, Silvia
author_role author
author2 Laginhas, Carlos
Carrott, Manuela
Carrott, Peter
Gomes, Jose
Suhas, Suhas
Ramires, Ana
Roman, Silvia
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Valente Nabais, Joao
Laginhas, Carlos
Carrott, Manuela
Carrott, Peter
Gomes, Jose
Suhas, Suhas
Ramires, Ana
Roman, Silvia
dc.subject.por.fl_str_mv adsorption
activated carbon
topic adsorption
activated carbon
description The adsorption of phenol and mercury from dilute aqueous solutions onto new activated carbons was studied. These included activated carbons produced from novel precursors, namely rapeseed, vine shoots and kenaf, and samples oxidised with nitric acid in liquid phase. The results have shown the significant potential of rapeseed, vine shoots and kenaf for the activated carbon production. The activated carbons produced by carbon dioxide activation were mainly microporous with BET apparent surface area up to 1224m2g-1 and pore volume 0.5cm3g-1. The effects of concentration and pH were studied. The phenol adsorption isotherms at 25ºC followed the Freundlich model with maximum adsorption capacities of approximately 80mgg-1 and 60mgg-1 for the pristine and oxidised activated carbons, respectively. The influence of pH on the phenol adsorption has two trends for pH smaller and bigger than 10. The maximum adsorption capacity of mercury adsorption onto activated carbon made from vine shoots reaches 1103mgg-1. The adsorption depends on the mercury species and the on the adsorbent properties, namely porosity and net surface charge.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01T00:00:00Z
2012-12-06T19:45:01Z
2012-12-06
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/6573
http://hdl.handle.net/10174/6573
url http://hdl.handle.net/10174/6573
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv J.M. Valente Nabais, C. Laginhas, P.J.M. Carrott, M.M. Ribeiro Carrott, J.A. Gomes, Suhas, A. Ramires, S. Roman, Pollutants removal onto novel activated carbons made from lignocellulosic precursors”, Carbon 2009 (M. Monthioux, Edt.) Groupe Français d’Etude des Carbones, Biarritz (2009), Short Abstract pag 159,
jvn@uevora.pt
nd
nd
nd
nd
nd
nd
nd
252
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Carbon 2009
publisher.none.fl_str_mv Carbon 2009
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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