Adsorption-based separations of gaseous nitrogen and methane mixtures

Thomas Leroy Hinton Saleman

    Research output: ThesisDoctoral Thesis

    513 Downloads (Pure)


    A novel adsorption process, known as dual-reflux pressure swing adsorption (DR-PSA), has been used to effectively and efficiently separate methane from streams containing wide-ranging concentrations of nitrogen. Various operational parameters were explored to assess how they affect the process performance, from which a working theory for DR-PSA was developed to enable process design for a particular separation. An adsorbent with world-record methane-nitrogen selectivity was used to enrich dilute feeds from 2% to 50% methane at a recovery near 100%. Additionally, for the first time, a kinetically based DR­-PSA separation was demonstrated to reject N2 from natural gas.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • The University of Western Australia
    • Johns, Michael, Supervisor
    • May, Eric, Supervisor
    • Li, Gang, Supervisor
    Award date25 Nov 2016
    Publication statusUnpublished - 2016


    Dive into the research topics of 'Adsorption-based separations of gaseous nitrogen and methane mixtures'. Together they form a unique fingerprint.

    Cite this