The importance of surface properties in the selection of supports for nitrification in airlift bioreactors

Detalhes bibliográficos
Autor(a) principal: Teixeira, P.
Data de Publicação: 1998
Outros Autores: Oliveira, Rosário
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/1373
Resumo: The selection of the supports for biomass immobilisation is of great importance to obtain a stable biofilm leading to a high nitrification efficiency. In this work five type of supports were assayed in external loop air-lift reactors: sand, limestone, basalt, pumice and poraver. The efficiencies of the supports were compared and discussed in terms of their surface-properties: surface free energy of interaction, surface charge, porosity and shape. The results showed that materials leading to low surface free energies of interaction and with less negative surface charges favour bacterial adhesion and the formation of stable biofilms. High porosities are also relevant for bacterial colonisation. However, irregular shaped particles may promote the erosion of attached biomass.
id RCAP_e5f9e5d754825e0e66a6d8bbe242da1f
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/1373
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling The importance of surface properties in the selection of supports for nitrification in airlift bioreactorsScience & TechnologyThe selection of the supports for biomass immobilisation is of great importance to obtain a stable biofilm leading to a high nitrification efficiency. In this work five type of supports were assayed in external loop air-lift reactors: sand, limestone, basalt, pumice and poraver. The efficiencies of the supports were compared and discussed in terms of their surface-properties: surface free energy of interaction, surface charge, porosity and shape. The results showed that materials leading to low surface free energies of interaction and with less negative surface charges favour bacterial adhesion and the formation of stable biofilms. High porosities are also relevant for bacterial colonisation. However, irregular shaped particles may promote the erosion of attached biomass.Program Interreg - Project01/REG II/6/96Springer VerlagUniversidade do MinhoTeixeira, P.Oliveira, Rosário19981998-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1373eng"Bioprocess engineering". 19 (1998) 143-147.0178-515X10.1007/s004490050495info: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:RCAAP2023-07-21T12:43:33Zoai:repositorium.sdum.uminho.pt:1822/1373Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:41:02.795521Repositório 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 The importance of surface properties in the selection of supports for nitrification in airlift bioreactors
title The importance of surface properties in the selection of supports for nitrification in airlift bioreactors
spellingShingle The importance of surface properties in the selection of supports for nitrification in airlift bioreactors
Teixeira, P.
Science & Technology
title_short The importance of surface properties in the selection of supports for nitrification in airlift bioreactors
title_full The importance of surface properties in the selection of supports for nitrification in airlift bioreactors
title_fullStr The importance of surface properties in the selection of supports for nitrification in airlift bioreactors
title_full_unstemmed The importance of surface properties in the selection of supports for nitrification in airlift bioreactors
title_sort The importance of surface properties in the selection of supports for nitrification in airlift bioreactors
author Teixeira, P.
author_facet Teixeira, P.
Oliveira, Rosário
author_role author
author2 Oliveira, Rosário
author2_role author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Teixeira, P.
Oliveira, Rosário
dc.subject.por.fl_str_mv Science & Technology
topic Science & Technology
description The selection of the supports for biomass immobilisation is of great importance to obtain a stable biofilm leading to a high nitrification efficiency. In this work five type of supports were assayed in external loop air-lift reactors: sand, limestone, basalt, pumice and poraver. The efficiencies of the supports were compared and discussed in terms of their surface-properties: surface free energy of interaction, surface charge, porosity and shape. The results showed that materials leading to low surface free energies of interaction and with less negative surface charges favour bacterial adhesion and the formation of stable biofilms. High porosities are also relevant for bacterial colonisation. However, irregular shaped particles may promote the erosion of attached biomass.
publishDate 1998
dc.date.none.fl_str_mv 1998
1998-01-01T00:00:00Z
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/1822/1373
url http://hdl.handle.net/1822/1373
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Bioprocess engineering". 19 (1998) 143-147.
0178-515X
10.1007/s004490050495
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
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
institution RCAAP
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
_version_ 1799132957860954112

Registros relacionados