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A novel cryogenic fixed-bed adsorption apparatus for studying green hydrogen recovery from natural gas grids

2023Artigo científico Acesso aberto
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dc.contributor.authorZafanelli, Lucas F.A.S.
dc.contributor.authorAly, Ezzeldin
dc.contributor.authorRodrigues, Alírio
dc.contributor.authorSilva, José A.C.
dc.date.accessioned2020-03-31T13:59:00Z
dc.date.available2020-03-31T13:59:00Z
dc.date.issued2023
dc.description.abstractIn this work, a fixed-bed adsorption apparatus was developed to carry out adsorption breakthrough curve ex-periments at cryogenic temperatures (between 195 and 273 K) and high pressures (up to 18 bar) to screen adsorbents for the dynamic separation of green hydrogen blended in natural gas grids. Therefore, a series of breakthrough curve experiments of single component CH4 and H2, and their mixtures on the benchmark binder -free zeolite 13X were performed. The equilibrium data obtained were fitted with the virial, dual-site Langmuir, and Langmuir isotherm models. Moreover, the equilibrium data and the isosteric heat of adsorption were compared with the data available in the literature obtained by microcalorimetric, gravimetric, and volumetric methods. The maximum loading obtained for CH4 and H2 at 195 K and 12 bar was 6.95 and 2.08 mol kg-1. The selectivity predicted by the extended dual-site Langmuir was 17.3 for CH4 over H2 at 195 K and 12 bar, considering a binary interaction of a mixture of CH4/H2 (80/20 vol%). Additionally, binary experiments were performed to evaluate the dynamic separation of H2 and CH4 at the mixture ratio H2/CH4 (20/80 % vol.), and data was simulated by using a proper dynamic fixed-bed adsorption mathematical model. Overall, the results pointed out that the novel apparatus provides a reliable tool to collect equilibrium and dynamic information for screening adsorbents targeting the separation of green H2 blended into natural gas grids.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationZafanelli, Lucas F.A.S.; Aly, Ezzeldin; Rodrigues, Alírio; Silva, José A.C.. (2023). A novel cryogenic fixed-bed adsorption apparatus for studying green hydrogen recovery from natural gas grids. Separation and Purification Technology. EISSN 1873-3794. 307, p. 1-10pt_PT
dc.identifier.doi10.1016/j.seppur.2022.122824
dc.identifier.eissn1873-3794
dc.identifier.issn1383-5866
dc.identifier.urihttp://hdl.handle.net/10198/21278
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBinder-free zeolite 13Xpt_PT
dc.subjectGreen Hydrogenpt_PT
dc.subjectCryogenic fixed bed adsorptionpt_PT
dc.subjectNatural gas gridspt_PT
dc.subjectNumerical modeling
dc.titleA novel cryogenic fixed-bed adsorption apparatus for studying green hydrogen recovery from natural gas gridspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleSeparation and Purification Technologypt_PT
person.familyNameZafanelli
person.familyNameAly
person.familyNameSilva
person.givenNameLucas F.A.S.
person.givenNameEzzeldin
person.givenNameJosé A.C.
person.identifier.ciencia-id3D11-114D-1019
person.identifier.ciencia-idC11B-F5CF-7C78
person.identifier.orcid0000-0001-5187-2042
person.identifier.orcid0000-0003-4840-2597
person.identifier.orcid0000-0003-1778-3833
person.identifier.scopus-author-id7403023684
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication2578e37a-73f2-45df-8adb-723f6c027606
relation.isAuthorOfPublicationc0a51f8a-4f65-4b81-81e5-32c14291022f
relation.isAuthorOfPublication16366ede-a7d6-45ff-a8c9-eff9bdde35c7
relation.isAuthorOfPublication.latestForDiscoveryc0a51f8a-4f65-4b81-81e5-32c14291022f

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