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Dual-stage vacuum pressure swing adsorption for green hydrogen recovery from natural gas grids

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dc.contributor.authorZafanelli, Lucas F.A.S.
dc.contributor.authorAly, Ezzeldin
dc.contributor.authorHenrique, Adriano
dc.contributor.authorRodrigues, Alírio
dc.contributor.authorSilva, José A.C.
dc.date.accessioned2025-01-13T10:29:52Z
dc.date.available2025-01-13T10:29:52Z
dc.date.issued2025
dc.description.abstractPurification of green hydrogen (GH) from natural gas grids (NGG) can be expensive and challenging through a single-step Pressure Swing Adsorption (PSA) process due to the low H2 concentration in the grid (<20 % v/v). Herein, we report for the first time the design of a dual-stage vacuum pressure swing adsorption process (DS-VPSA) to purify H2 blended in NGG with a synergy action of two types of adsorbents: a Carbon Molecular Sieve 3K-172 (CMS) in stage 1 and zeolite 13X in stage 2. In Stage 1, the CMS kinetically separates H2 from CH4, pre-concentrating H2 from 20 % to over 50–60 % (v/v), followed by Stage 2, where a thermodynamic separation with zeolite 13X achieves a final product with a high H2 purity content (>99 % v/v). A mathematical model is developed in Aspen adsorption, where numerical simulations are performed to establish the best operating conditions of the global DS-VPSA. A parametric study is also conducted to optimize performance parameters such as recovery, purity, productivity, and specific energy. The results indicate that it is possible to achieve a final H2 product with a purity of 99.97 % (fuel cell grade), a recovery of 67 %, and productivity of 1.60x10-2 kgH2/kgads/hr, and a total specific energy consumption of 10.06 MJ/kgH2, which is a significant achievement reported so far.pt_PT
dc.description.sponsorshipThe authors are grateful to the Foundation for Science and Tech- nology (FCT, Portugal) for financial support: (1) under project PTDC/EQU-EPQ/0467/2020 (DOI: 10.54499/PTDC/EQU-EPQ/0467/2020), (2) through the national funds FCT/MCTES (PIDDAC): CIMO, UIDB/00690/2020 (DOI: 10.54499/UIDB/00690/2020) and UIDP/00690/2020 (DOI: 10.54499/UIDP/00690/2020); and SusTEC, LA/P/0007/2020 (DOI:10.54499/LA/P/0007/2020), (3) by the national funds through FCT/MCTES (PIDDAC): LSRE-LCM, UIDB/50020/2020 (DOI: 10.54499/UIDB/50020/2020) and UIDP/50020/2020 (DOI: 10.54499/UIDP/50020/2020); and ALiCE, LA/P/0045/2020 (DOI: 10.54499/LA/ P/0045/2020). Additionally, we thank national funding from the FCT Foundation for Science and Technology through the individual research grant 2020.07925.BD (DOI: 10.54499/2020.07925.BD) of Lucas F. A. S. Zafanelli.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationZafanelli, Lucas F.A.S.; Aly, Ezzeldin; Henrique, Adriano; Rodrigues, Alírio; Silva, José A.C. (2025). Dual-stage vacuum pressure swing adsorption for green hydrogen recovery from natural gas grids. Separation and Purification Technology. ISSN 1383-5866. 360, p. 1-10pt_PT
dc.identifier.doi10.1016/j.seppur.2024.130869pt_PT
dc.identifier.issn1383-5866
dc.identifier.urihttp://hdl.handle.net/10198/30921
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationGreen Hydrogen Separation from Natural Gas Grids by Adsorption Processes with MOFs
dc.relationMountain Research Center - UIDB/00690/2020
dc.relationMountain Research Center - UIDP/00690/2020
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions - LA/P/0007/2020
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationALICE - Associate Laboratory in Chemical Engineering
dc.relationGreen Hydrogen Recovery from Natural Gas Grids by Adsorption Processes
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDual-stage vacuum pressure swing adsorptionpt_PT
dc.subjectGreen hydrogenpt_PT
dc.subjectHydrogen separationpt_PT
dc.subjectHydrogen recoverypt_PT
dc.subjectNatural gas pipelinespt_PT
dc.subjectFuel cell grade hydrogenpt_PT
dc.subjectAspen adsorptionpt_PT
dc.titleDual-stage vacuum pressure swing adsorption for green hydrogen recovery from natural gas gridspt_PT
dc.typejournal article
dspace.entity.typePublication
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oaire.awardNumberLA/P/0045/2020
oaire.awardNumber2020.07925.BD
oaire.awardTitleGreen Hydrogen Separation from Natural Gas Grids by Adsorption Processes with MOFs
oaire.awardTitleMountain Research Center - UIDB/00690/2020
oaire.awardTitleMountain Research Center - UIDP/00690/2020
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions - LA/P/0007/2020
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardTitleALICE - Associate Laboratory in Chemical Engineering
oaire.awardTitleGreen Hydrogen Recovery from Natural Gas Grids by Adsorption Processes
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Concurso para Financiamento de Projetos de Investigação Científica e Desenvolvimento Tecnológico em Todos os Domínios Científicos - 2020/PTDC%2FEQU-EPQ%2F0467%2F2020/PT
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oaire.citation.startPage130869pt_PT
oaire.citation.titleSeparation and Purification Technologypt_PT
oaire.citation.volume360pt_PT
oaire.fundingStreamConcurso para Financiamento de Projetos de Investigação Científica e Desenvolvimento Tecnológico em Todos os Domínios Científicos - 2020
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person.familyNameZafanelli
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person.familyNameHenrique
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person.givenNameLucas F.A.S.
person.givenNameEzzeldin
person.givenNameAdriano
person.givenNameJosé A.C.
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person.identifier.orcid0000-0003-1778-3833
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