High pressure adsorption isotherms of nitrogen onto granular activated carbon for a single bed pressure swing adsorption refrigeration system

Avinash V. Palodkar, Kumar Anupam, Zunipa Roy, B. B. Saha, G. N. Halder

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    Adsorption characteristics of nitrogen onto granular activated carbon for the wide range of temperature (303–323 K) and pressure (0.2027–2.0265 MPa) have been reported for a single bed pressure swing adsorption refrigeration system. The experimental data were fitted to Langmuir, Dubinin-Astakhov and Dubinin-Radushkevich (D-R) isotherms. The Langmuir and D-R isotherm models were found appropriate in correlating experimental adsorption data with an average relative error of ±2.0541% and ±0.6659% respectively. The isosteric heat of adsorption data were estimated as a function of surface coverage of nitrogen and temperature using D-R isotherm. The heat of adsorption was observed to decrease from 12.65 to 6.98 kJ.mol−1 with an increase in surface concentration at 303 K and it followed the same pattern for other temperatures. It was found that an increase in temperature enhances the magnitude of the heat of adsorption.

    Original languageEnglish
    Pages (from-to)3155-3166
    Number of pages12
    JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
    Volume53
    Issue number10
    DOIs
    Publication statusPublished - Oct 1 2017

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Fluid Flow and Transfer Processes

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