Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/73884
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Campo DC | Valor | Idioma |
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dc.contributor.author | Silva, R. M. | por |
dc.contributor.author | Abreu, A. A. | por |
dc.contributor.author | Salvador, Andreia Filipa Ferreira | por |
dc.contributor.author | Alves, M. M. | por |
dc.contributor.author | Neves, Isabel C. | por |
dc.contributor.author | Pereira, M. A. | por |
dc.date.accessioned | 2021-09-03T11:25:09Z | - |
dc.date.available | 2021-09-03T11:25:09Z | - |
dc.date.issued | 2021-08-11 | - |
dc.identifier.citation | Silva, R. M.; Abreu, A. A.; Salvador, Andreia F.; Alves, M. Madalena; Neves, Isabel C.; Pereira, M. Alcina, Zeolite addition to improve biohydrogen production from dark fermentation of C5/C6-sugars and Sargassum sp. biomass. Scientific Reports, 11(16350), 2021 | por |
dc.identifier.issn | 2045-2322 | por |
dc.identifier.uri | https://hdl.handle.net/1822/73884 | - |
dc.description.abstract | Thermophilic biohydrogen production by dark fermentation from a mixture (1:1) of C5 (arabinose) and C6 (glucose) sugars, present in lignocellulosic hydrolysates, and from Sargassum sp. biomass, is studied in this work in batch assays and also in a continuous reactor experiment. Pursuing the interest of studying interactions between inorganic materials (adsorbents, conductive and others) and anaerobic bacteria, the biological processes were amended with variable amounts of a zeolite type-13X in the range of zeolite/inoculum (in VS) ratios (Z/I) of 0.0650.26 g g1. In the batch assays, the presence of the zeolite was beneficial to increase the hydrogen titer by 1521% with C5 and C6-sugars as compared to the control, and an increase of 27% was observed in the batch fermentation of Sargassum sp. Hydrogen yields also increased by 1026% with sugars in the presence of the zeolite. The rate of hydrogen production increased linearly with the Z/I ratios in the experiments with C5 and C6-sugars. In the batch assay with Sargassum sp., there was an optimum value of Z/I of 0.13 g g1 where the H2 production rate observed was the highest, although all values were in a narrow range between 3.21 and 4.19 mmol L1 day1. The positive effect of the zeolite was also observed in a continuous high-rate reactor fed with C5 and C6-sugars. The increase of the organic loading rate (OLR) from 8.8 to 17.6 kg m3 day1 of COD led to lower hydrogen production rates but, upon zeolite addition (0.26 g g1 VS inoculum), the hydrogen production increased significantly from 143 to 413 mL L1 day1. Interestingly, the presence of zeolite in the continuous operation had a remarkable impact in the microbial community and in the profile of fermentation products. The effect of zeolite could be related to several properties, including the porous structure and the associated surface area available for bacterial adhesion, potential release of trace elements, ion-exchanger capacity or ability to adsorb different compounds (i.e. protons). The observations opens novel perspectives and will stimulate further research not only in biohydrogen production, but broadly in the field of interactions between bacteria and inorganic materials. © 2021, The Author(s). | por |
dc.description.sponsorship | This study was supported by the Portuguese Foundation for Science and Technology (FCT, Portugal) under the scope of the strategic funding of UID/BIO/04469 unit and COMPETE 2020 (POCI-01-0145-FEDER-006684), Project SAICTPAC/0040/2015 (POCI-01-0145-FEDER-016403) 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. | por |
dc.language.iso | eng | por |
dc.publisher | Nature Research | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FBIO%2F04469%2F2013/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/SAICTPAC%2F0040%2F2015/PT | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Environmental biotechnology | por |
dc.subject | Environmental microbiology | por |
dc.title | Zeolite addition to improve biohydrogen production from dark fermentation of C5/C6-sugars and Sargassum sp. biomass | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.nature.com/articles/s41598-021-95615-1 | por |
dc.comments | CEB54606 | por |
oaire.citationIssue | 1 | por |
oaire.citationVolume | 11 | por |
dc.date.updated | 2021-08-31T17:17:39Z | - |
dc.identifier.doi | 10.1038/s41598-021-95615-1 | por |
dc.identifier.pmid | 34381104 | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Scientific Reports | por |
oaire.version | VoR | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_54606_1.pdf | 1,51 MB | Adobe PDF | Ver/Abrir |
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