Evaluating methane adsorbed film densities on activated carbon in dynamic systems

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dc.contributor.author Prosniewski, Matthew
dc.contributor.author Gillespie, Andrew
dc.contributor.author Knight, Ernest
dc.contributor.author Rash, Tyler
dc.contributor.author Stalla, David
dc.contributor.author Romanos, Jimmy
dc.contributor.author Smith, Adam
dc.date.accessioned 2019-10-10T09:21:28Z
dc.date.available 2019-10-10T09:21:28Z
dc.date.copyright 2018 en_US
dc.date.issued 2019-10-10
dc.identifier.issn 2352-152X en_US
dc.identifier.uri http://hdl.handle.net/10725/11408
dc.description.abstract Dynamic methane loading and discharge experiments on a 40 L adsorbed natural gas tank containing 20.5 kg of monolithic carbon adsorbent have been combined with pore volume data from subcritical nitrogen isotherms to evaluate the density and dynamic properties associated with adsorbed methane. The time-dependent density of the adsorbed gas was evaluated for narrow and wide micropores. The temperature-dependent adsorbed film volume was determined from the Ono-Kondo model and compared with the total micropore volume. The resulting adsorbed methane density evolves in two distinct parts. The density increases rapidly during the beginning of the loading process and increases slowly after narrow pores reach saturation. The narrow pores’ saturated adsorbed gas densities ranged from 0.26 – 0.35 kg/L, depending on the choice of film volume. The density of wide micropores was found to be highly dependent on the loading procedure due to the expected temperature dependence of the film volume. During discharge, it was found that the wide micropores deplete early while narrow micropores deplete slowly which causes the less than 100% efficient discharges seen in adsorbed natural gas systems. These density models have been applied to accurately predict the gravimetric excess adsorption of other carbon adsorbents at 35 bar and explain previously published pressure and temperature relations during tank loading. en_US
dc.language.iso en en_US
dc.title Evaluating methane adsorbed film densities on activated carbon in dynamic systems en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SAS en_US
dc.author.idnumber 201306300 en_US
dc.author.department Natural Sciences en_US
dc.description.embargo N/A en_US
dc.relation.journal Journal of Energy Storage en_US
dc.journal.volume 20 en_US
dc.article.pages 357-363 en_US
dc.keywords Adsorption en_US
dc.keywords Carbon en_US
dc.keywords Methane en_US
dc.keywords Automotive en_US
dc.keywords Loading en_US
dc.keywords Discharge en_US
dc.identifier.doi https://doi.org/10.1016/j.est.2018.10.017 en_US
dc.identifier.ctation Prosniewski, M., Gillespie, A., Knight, E., Rash, T., Stalla, D., Romanos, J., & Smith, A. (2018). Evaluating methane adsorbed film densities on activated carbon in dynamic systems. Journal of Energy Storage, 20, 357-363. en_US
dc.author.email jimmy.romanos@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S2352152X18305486#kwd0005 en_US
dc.orcid.id https://orcid.org/0000-0002-5408-1657 en_US
dc.author.affiliation Lebanese American University en_US

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