Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/68266 |
Resumo: | Conductive nanomaterials affect anaerobic digestion (AD) processes usually by improving methane production. Nevertheless, their effect on anaerobic communities, and particularly on specific trophic groups such as syntrophic bacteria or methanogens, is not extensively reported. In this work, we evaluate the effect of multi-walled carbon nanotubes (MWCNT) on the activity of two different anaerobic microbial communities: an anaerobic sludge and a river sediment. Methane production by anaerobic sludge was assessed in the presence of different MWCNT concentrations, with direct methanogenic substrates (acetate, hydrogen) and with typical syntrophic substrates (ethanol, butyrate). MWCNT accelerated the initial specific methane production rate (SMPR) from all compounds, with a more pronounced effect on the assays with acetate and butyrate, i.e., 2.1 and 2.6 times, respectively. In the incubations with hydrogen and ethanol, SMPR increased 1.1 and 1.2 times. Experiments with the river sediment were performed in the presence of MWCNT and MWCNT impregnated with 2% iron (MWCNT-Fe). Cumulative methane production was 10.2 and 4.5 times higher in the assays with MWCNT-Fe and MWCNT, respectively, than in the assays without MWCNT. This shows the high potential of MWCNT toward bioenergy production, in waste/wastewater treatment or ex situ bioremediation in anaerobic digesters. |
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Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sedimentsmethanesyntrophic degradationmulti-walled carbon nanotubesanaerobic sludgesedimentScience & TechnologyConductive nanomaterials affect anaerobic digestion (AD) processes usually by improving methane production. Nevertheless, their effect on anaerobic communities, and particularly on specific trophic groups such as syntrophic bacteria or methanogens, is not extensively reported. In this work, we evaluate the effect of multi-walled carbon nanotubes (MWCNT) on the activity of two different anaerobic microbial communities: an anaerobic sludge and a river sediment. Methane production by anaerobic sludge was assessed in the presence of different MWCNT concentrations, with direct methanogenic substrates (acetate, hydrogen) and with typical syntrophic substrates (ethanol, butyrate). MWCNT accelerated the initial specific methane production rate (SMPR) from all compounds, with a more pronounced effect on the assays with acetate and butyrate, i.e., 2.1 and 2.6 times, respectively. In the incubations with hydrogen and ethanol, SMPR increased 1.1 and 1.2 times. Experiments with the river sediment were performed in the presence of MWCNT and MWCNT impregnated with 2% iron (MWCNT-Fe). Cumulative methane production was 10.2 and 4.5 times higher in the assays with MWCNT-Fe and MWCNT, respectively, than in the assays without MWCNT. This shows the high potential of MWCNT toward bioenergy production, in waste/wastewater treatment or ex situ bioremediation in anaerobic digesters.This research was funded by the Portuguese Foundation for Science and Technology(FCT) under the scope of project MORE (POCI-01-0145-FEDER-016575), of the strategic funding of UIDB/04469/2020 unit and BioTecNorte operation (NORTE-01-0145-FEDER-000004) funded by the European Regional Development Fund under the scope of Norte2020-Programa Operacional Regional do Norte, as well as FCT/MCTES trough national funds (PIDDAC) and Base Funding-UIDB/50020/20 of the Associate Laboratory LSRE-LCM-funded by national funds rough FCT/MCTES (PIDDAC). Research of O.S.G.P.S. was funded by FCT under the Scientific Employment Stimulus-Institutional Call EECINST/00049/2018.info:eu-repo/semantics/publishedVersionMDPIUniversidade do MinhoCavaleiro, Ana JúliaSalvador, Andreia Filipa FerreiraMartins, GilbertoOliveira, C. P.Liu, Y.Martins, V. A.Castro, RitaSoares, Olívia Salomé G. P.Pereira, Manuel Fernando R.Pereira, LucianaLangenhoff, Alette A. M.Pereira, M. A.Alves, M. M.20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/68266engCavaleiro, Ana Júlia; Salvador, Andreia F.; Martins, Gilberto; Oliveira, C. P.; Liu, Y.; Martins, V. A.; Castro, Rita; Soares, Olívia Salomé G. P.; Pereira, Manuel Fernando R.; Pereira, Luciana; Langenhoff, Alette A. M.; Pereira, M. Alcina; Alves, M. Madalena, Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments. Applied Sciences-Basel, 10(22), 8184, 20202076-341710.3390/app10228184http://www.mdpi.com/journal/applsciinfo: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:RCAAP2023-07-21T12:24:42Zoai:repositorium.sdum.uminho.pt:1822/68266Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:18:47.058755Repositório 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 |
Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments |
title |
Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments |
spellingShingle |
Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments Cavaleiro, Ana Júlia methane syntrophic degradation multi-walled carbon nanotubes anaerobic sludge sediment Science & Technology |
title_short |
Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments |
title_full |
Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments |
title_fullStr |
Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments |
title_full_unstemmed |
Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments |
title_sort |
Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments |
author |
Cavaleiro, Ana Júlia |
author_facet |
Cavaleiro, Ana Júlia Salvador, Andreia Filipa Ferreira Martins, Gilberto Oliveira, C. P. Liu, Y. Martins, V. A. Castro, Rita Soares, Olívia Salomé G. P. Pereira, Manuel Fernando R. Pereira, Luciana Langenhoff, Alette A. M. Pereira, M. A. Alves, M. M. |
author_role |
author |
author2 |
Salvador, Andreia Filipa Ferreira Martins, Gilberto Oliveira, C. P. Liu, Y. Martins, V. A. Castro, Rita Soares, Olívia Salomé G. P. Pereira, Manuel Fernando R. Pereira, Luciana Langenhoff, Alette A. M. Pereira, M. A. Alves, M. M. |
author2_role |
author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Cavaleiro, Ana Júlia Salvador, Andreia Filipa Ferreira Martins, Gilberto Oliveira, C. P. Liu, Y. Martins, V. A. Castro, Rita Soares, Olívia Salomé G. P. Pereira, Manuel Fernando R. Pereira, Luciana Langenhoff, Alette A. M. Pereira, M. A. Alves, M. M. |
dc.subject.por.fl_str_mv |
methane syntrophic degradation multi-walled carbon nanotubes anaerobic sludge sediment Science & Technology |
topic |
methane syntrophic degradation multi-walled carbon nanotubes anaerobic sludge sediment Science & Technology |
description |
Conductive nanomaterials affect anaerobic digestion (AD) processes usually by improving methane production. Nevertheless, their effect on anaerobic communities, and particularly on specific trophic groups such as syntrophic bacteria or methanogens, is not extensively reported. In this work, we evaluate the effect of multi-walled carbon nanotubes (MWCNT) on the activity of two different anaerobic microbial communities: an anaerobic sludge and a river sediment. Methane production by anaerobic sludge was assessed in the presence of different MWCNT concentrations, with direct methanogenic substrates (acetate, hydrogen) and with typical syntrophic substrates (ethanol, butyrate). MWCNT accelerated the initial specific methane production rate (SMPR) from all compounds, with a more pronounced effect on the assays with acetate and butyrate, i.e., 2.1 and 2.6 times, respectively. In the incubations with hydrogen and ethanol, SMPR increased 1.1 and 1.2 times. Experiments with the river sediment were performed in the presence of MWCNT and MWCNT impregnated with 2% iron (MWCNT-Fe). Cumulative methane production was 10.2 and 4.5 times higher in the assays with MWCNT-Fe and MWCNT, respectively, than in the assays without MWCNT. This shows the high potential of MWCNT toward bioenergy production, in waste/wastewater treatment or ex situ bioremediation in anaerobic digesters. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 2020-01-01T00:00:00Z |
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/1822/68266 |
url |
http://hdl.handle.net/1822/68266 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Cavaleiro, Ana Júlia; Salvador, Andreia F.; Martins, Gilberto; Oliveira, C. P.; Liu, Y.; Martins, V. A.; Castro, Rita; Soares, Olívia Salomé G. P.; Pereira, Manuel Fernando R.; Pereira, Luciana; Langenhoff, Alette A. M.; Pereira, M. Alcina; Alves, M. Madalena, Multi-walled carbon nanotubes enhance methanogenesis from diverse organic compounds in anaerobic sludge and river sediments. Applied Sciences-Basel, 10(22), 8184, 2020 2076-3417 10.3390/app10228184 http://www.mdpi.com/journal/applsci |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
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MDPI |
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 |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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