Pressurized syngas bioconversion: physiological and microbial characterization
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2017 |
| Outros Autores: | , , , |
| Idioma: | eng |
| Título da fonte: | Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) |
| Texto Completo: | http://hdl.handle.net/1822/48202 |
Resumo: | ICBM-3 - 3rd International Conference on Biogas Microbiology |
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Pressurized syngas bioconversion: physiological and microbial characterizationEngenharia e Tecnologia::Biotecnologia IndustrialICBM-3 - 3rd International Conference on Biogas MicrobiologySyngas is composed mainly by CO, H2 and CO2 and its fermentation is a promising biological process to produce fuels or commodity chemicals. Experiments under increased initial syngas pressures, up to 5.2×105 Pa, were carried out to evaluate the effects on metabolites production and microbial communities structure. Two strategies were applied: NB non-adapted biomass and SB successively syngas-fed biomass. The rise of syngas pressure from 1.2×105 Pa up to 5.2×105 Pa led to a decrease on CO and H2 consumption rates and CH4 production rate. Moreover, when methanogenesis was partially inhibited, propionate and butyrate were the main metabolites produced from syngas. DGGE profiles showed differences on diversity and on similarity indices (SI) with changes in pressure. Regardless the syngas pressure employed, the archaeal communities had higher SI (above 70%) than bacterial community (48% to 62%). From the Illumina sequencing analysis, it was observed that the relative abundance of bacterial communities tend to decrease (72% to 46%), and archaeal communities increased (25% to 54%) by raising the pressure of syngas from 1.2×105 Pa to 5.2×105 Pa. In the inoculum and biomass incubated at 1.2×105 Pa syngas, 40% of total population were from Proteobacteria phylum and Deltraproteobacteria class and their abundance was reduced 4-fold at 5.2×105 Pa. As a direct effect of high pressures of syngas, organisms belonging to Firmicutes, Synergistetes and Thermotogae phyla increased over 10-fold. The predominant phylotypes at 3×105 Pa and 5.2×105 Pa were related to Methanobacterium genus (archaea) and to Eubacteriaceae, Synergistaceae and Syntrophobacteraceae families (bacteria). These results showed a microbial population enrichment suggesting a high specialization for the substrate.info:eu-repo/semantics/publishedVersionUniversidade do MinhoAlves, J. I.Lopes, MarlenePereira, Ana Luísa Arantes CarvalhoSousa, Diana Zita MachadoAlves, M. M.2017-052017-05-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/1822/48202engAlves, J. I.; Lopes, Marlene; Pereira, Ana Luísa; Sousa, Diana Z.; Alves, M. Madalena, Pressurized syngas bioconversion: physiological and microbial characterization. ICBM-3 - 3rd International Conference on Biogas Microbiology. Wageningen, The Netherlands, 1-3 may, 2017.https://www.wur.nl/en/show/3rd-International-Conference-on-Biogas-Microbiology-ICBM-3.htminfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-11T04:55:03Zoai:repositorium.sdum.uminho.pt:1822/48202Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T15:02:36.399422Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse |
| dc.title.none.fl_str_mv |
Pressurized syngas bioconversion: physiological and microbial characterization |
| title |
Pressurized syngas bioconversion: physiological and microbial characterization |
| spellingShingle |
Pressurized syngas bioconversion: physiological and microbial characterization Alves, J. I. Engenharia e Tecnologia::Biotecnologia Industrial |
| title_short |
Pressurized syngas bioconversion: physiological and microbial characterization |
| title_full |
Pressurized syngas bioconversion: physiological and microbial characterization |
| title_fullStr |
Pressurized syngas bioconversion: physiological and microbial characterization |
| title_full_unstemmed |
Pressurized syngas bioconversion: physiological and microbial characterization |
| title_sort |
Pressurized syngas bioconversion: physiological and microbial characterization |
| author |
Alves, J. I. |
| author_facet |
Alves, J. I. Lopes, Marlene Pereira, Ana Luísa Arantes Carvalho Sousa, Diana Zita Machado Alves, M. M. |
| author_role |
author |
| author2 |
Lopes, Marlene Pereira, Ana Luísa Arantes Carvalho Sousa, Diana Zita Machado Alves, M. M. |
| author2_role |
author author author author |
| dc.contributor.none.fl_str_mv |
Universidade do Minho |
| dc.contributor.author.fl_str_mv |
Alves, J. I. Lopes, Marlene Pereira, Ana Luísa Arantes Carvalho Sousa, Diana Zita Machado Alves, M. M. |
| dc.subject.por.fl_str_mv |
Engenharia e Tecnologia::Biotecnologia Industrial |
| topic |
Engenharia e Tecnologia::Biotecnologia Industrial |
| description |
ICBM-3 - 3rd International Conference on Biogas Microbiology |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017-05 2017-05-01T00:00:00Z |
| dc.type.driver.fl_str_mv |
conference object |
| dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
| status_str |
publishedVersion |
| dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/48202 |
| url |
http://hdl.handle.net/1822/48202 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
Alves, J. I.; Lopes, Marlene; Pereira, Ana Luísa; Sousa, Diana Z.; Alves, M. Madalena, Pressurized syngas bioconversion: physiological and microbial characterization. ICBM-3 - 3rd International Conference on Biogas Microbiology. Wageningen, The Netherlands, 1-3 may, 2017. https://www.wur.nl/en/show/3rd-International-Conference-on-Biogas-Microbiology-ICBM-3.htm |
| dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
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reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia instacron:RCAAP |
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FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia |
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RCAAP |
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RCAAP |
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Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) |
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Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) |
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Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia |
| repository.mail.fl_str_mv |
info@rcaap.pt |
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1833595060237631488 |