Publicação
Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors
| Resumo: | The catalytic effect of commercial microporous activated carbon (AC) and macroporous carbon nanotubes (CNT) is investigated in reductive bioreactions in continuous high rate anaerobic reactors, using the azo dye Acid Orange 10 (AO10) as model compound as electron acceptor and a mixture of VFA as electron donor. Size and concentration of carbon materials (CM) and hydraulic retention time (HRT) are assessed. CM increased the biological reduction rate of AO10, resulting in significantly higher colour removal, as compared to the control reactors. The highest efficiency, 98%, was achieved with a CNT diameter (d) lower than 0.25 mm, at a CNT concentration of 0.12 g per g of volatile solids (VS), a HRT of 10 h and resulted in a chemical oxygen demand (COD) removal of 85%. Reducing the HRT to 5 h, colour and COD removal in CM-mediated bioreactors were above 90% and 80%, respectively. In the control reactor, thought similar COD removal was achieved, AO10 decolourisation was just approximately 20%, demonstrating the ability of CM to significantly accelerate the reduction reactions in continuous bioreactors. AO10 reduction to the correspondent aromatic amines was proved by high performance liquid chromatography (HPLC). Colour decrease in the reactor treating a real effluent with CNT was the double comparatively to the reactor operated without CNT. The presence of AC in the reactor did not affect the microbial diversity, as compared to the control reactor, evidencing that the efficient reduction of AO10 was mainly due to AC rather than attributed to changes in the composition of the microbial communities. |
|---|---|
| Autores principais: | Pereira, Raquel |
| Outros Autores: | Salvador, A. F.; Dias, P.; Pereira, M. F. R.; Alves, M. M.; Pereira, Luciana |
| Assunto: | Anaerobic bioreduction Carbon materials Microbial diversity Redox mediators UASB bioreactor |
| Ano: | 2016 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867438928689102848 |
|---|---|
| author | Pereira, Raquel |
| author2 | Salvador, A. F. Dias, P. Pereira, M. F. R. Alves, M. M. Pereira, Luciana |
| author2_role | author author author author author |
| author_facet | Pereira, Raquel Salvador, A. F. Dias, P. Pereira, M. F. R. Alves, M. M. Pereira, Luciana |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Pereira, Raquel\"},{\"Person.name\":\"Salvador, A. F.\"},{\"Person.name\":\"Dias, P.\"},{\"Person.name\":\"Pereira, M. F. R.\"},{\"Person.name\":\"Alves, M. M.\"},{\"Person.name\":\"Pereira, Luciana\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Pereira, Raquel Salvador, A. F. Dias, P. Pereira, M. F. R. Alves, M. M. Pereira, Luciana |
| datacite.date.Accepted.fl_str_mv | 2016-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2016-06-20T08:52:03Z |
| datacite.date.embargoed.fl_str_mv | 2016-06-20T08:52:03Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Anaerobic bioreduction Carbon materials Microbial diversity Redox mediators UASB bioreactor |
| datacite.titles.title.fl_str_mv | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Pereira, Raquel Salvador, A. F. Dias, P. Pereira, M. F. R. Alves, M. M. Pereira, Luciana |
| dc.date.Accepted.fl_str_mv | 2016-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2016-06-20T08:52:03Z |
| dc.date.embargoed.fl_str_mv | 2016-06-20T08:52:03Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/42039 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Anaerobic bioreduction Carbon materials Microbial diversity Redox mediators UASB bioreactor |
| dc.title.fl_str_mv | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | The catalytic effect of commercial microporous activated carbon (AC) and macroporous carbon nanotubes (CNT) is investigated in reductive bioreactions in continuous high rate anaerobic reactors, using the azo dye Acid Orange 10 (AO10) as model compound as electron acceptor and a mixture of VFA as electron donor. Size and concentration of carbon materials (CM) and hydraulic retention time (HRT) are assessed. CM increased the biological reduction rate of AO10, resulting in significantly higher colour removal, as compared to the control reactors. The highest efficiency, 98%, was achieved with a CNT diameter (d) lower than 0.25 mm, at a CNT concentration of 0.12 g per g of volatile solids (VS), a HRT of 10 h and resulted in a chemical oxygen demand (COD) removal of 85%. Reducing the HRT to 5 h, colour and COD removal in CM-mediated bioreactors were above 90% and 80%, respectively. In the control reactor, thought similar COD removal was achieved, AO10 decolourisation was just approximately 20%, demonstrating the ability of CM to significantly accelerate the reduction reactions in continuous bioreactors. AO10 reduction to the correspondent aromatic amines was proved by high performance liquid chromatography (HPLC). Colour decrease in the reactor treating a real effluent with CNT was the double comparatively to the reactor operated without CNT. The presence of AC in the reactor did not affect the microbial diversity, as compared to the control reactor, evidencing that the efficient reduction of AO10 was mainly due to AC rather than attributed to changes in the composition of the microbial communities. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/9e8f2bec-fb69-43ba-a141-fd7593e54d12/download |
| id | rum_232cdcbea15e195b40d4a045164e692f |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/42039 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/42039 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Pereira, Raquel Salvador, A. F. Dias, P. Pereira, M. F. R. Alves, M. M. Pereira, Luciana |
| publishDate | 2016 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engElsevierporThe catalytic effect of commercial microporous activated carbon (AC) and macroporous carbon nanotubes (CNT) is investigated in reductive bioreactions in continuous high rate anaerobic reactors, using the azo dye Acid Orange 10 (AO10) as model compound as electron acceptor and a mixture of VFA as electron donor. Size and concentration of carbon materials (CM) and hydraulic retention time (HRT) are assessed. CM increased the biological reduction rate of AO10, resulting in significantly higher colour removal, as compared to the control reactors. The highest efficiency, 98%, was achieved with a CNT diameter (d) lower than 0.25 mm, at a CNT concentration of 0.12 g per g of volatile solids (VS), a HRT of 10 h and resulted in a chemical oxygen demand (COD) removal of 85%. Reducing the HRT to 5 h, colour and COD removal in CM-mediated bioreactors were above 90% and 80%, respectively. In the control reactor, thought similar COD removal was achieved, AO10 decolourisation was just approximately 20%, demonstrating the ability of CM to significantly accelerate the reduction reactions in continuous bioreactors. AO10 reduction to the correspondent aromatic amines was proved by high performance liquid chromatography (HPLC). Colour decrease in the reactor treating a real effluent with CNT was the double comparatively to the reactor operated without CNT. The presence of AC in the reactor did not affect the microbial diversity, as compared to the control reactor, evidencing that the efficient reduction of AO10 was mainly due to AC rather than attributed to changes in the composition of the microbial communities.application/pdfporPerspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactorsPereira, RaquelSalvador, A. F.Dias, P.Pereira, M. F. R.Alves, M. M.Pereira, LucianaHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONPereira, Raquel; Salvador, A. F.; Dias, P.; Pereira, M. F. R.; Alves, M. Madalena; Pereira, Luciana, Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors. Water Research, 101, 441-447, 2016PMID27295618ISSNIsPartOf0043-1354EISSNIsPartOf0043-1354DOIIsPartOf10.1016/j.watres.2016.06.0042016-06-20T08:52:03Z20162016-06-19T18:52:10Z2016-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/42039http://purl.org/coar/access_right/c_abf2open accessAnaerobic bioreductionCarbon materialsMicrobial diversityRedox mediatorsUASB bioreactor871983 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/9e8f2bec-fb69-43ba-a141-fd7593e54d12/download |
| spellingShingle | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors Pereira, Raquel Anaerobic bioreduction Carbon materials Microbial diversity Redox mediators UASB bioreactor |
| status | SINGLETON |
| subject.fl_str_mv | Anaerobic bioreduction Carbon materials Microbial diversity Redox mediators UASB bioreactor |
| title | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors |
| title_full | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors |
| title_fullStr | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors |
| title_full_unstemmed | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors |
| title_short | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors |
| title_sort | Perspectives on carbon materials as powerful catalysts in continuous anaerobic bioreactors |
| topic | Anaerobic bioreduction Carbon materials Microbial diversity Redox mediators UASB bioreactor |
| topic_facet | Anaerobic bioreduction Carbon materials Microbial diversity Redox mediators UASB bioreactor |
| url | https://hdl.handle.net/1822/42039 |
| visible | 1 |