Evaluation of adsorption parameters and heats of adsorption through desorption measurements

Bidyut B. Saha, Shigeru Koyama, Ibrahim I. El-Sharkawy, Khairul Habib, Kandadai Srinivasan, Pradip Dutta

    Research output: Contribution to journalArticlepeer-review

    63 Citations (Scopus)


    The construction of an apparatus for the rapid measurement of the adsorption equilibrium characteristics and evaluation of the isosteric heat of adsorption of activated carbons for gaseous adsorbates is described. The method is based on measuring the amount desorbed between two equilibrium adsorption states. The measurement system has been tested for methane adsorption over (5 to 75)°C and pressures from (2 to 24) bar on a Maxsorb-III specimen of activated carbon. The results are evaluated through regressions with various isotherm equations used in the literature for physisorption and are compared with results of other researchers for comparable adsorbent-adsórbate combinations. A method of accounting for the adsorbed phase volume is proposed.

    Original languageEnglish
    Pages (from-to)2419-2424
    Number of pages6
    JournalJournal of Chemical and Engineering Data
    Issue number6
    Publication statusPublished - Nov 2007

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Chemical Engineering(all)


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