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Mariya E. Poltoratskaya
Mariya E. Poltoratskaya
Laboratory Technician
Empress Catherine II Saint Petersburg Mining University
Laboratory Technician
Empress Catherine II Saint Petersburg Mining University
Saint Petersburg
Russia

Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2023-10-22
  • Date accepted
    2024-03-05
  • Online publication date
    2024-04-11
  • Date published
    2024-08-26

The mechanism and thermodynamics of ethyl alcohol sorption process on activated petroleum coke

Article preview

The low-quality petcoke does not find qualified application and is stockpiled at refineries or used as solid fuel. One of the promising ways to use low-quality petroleum coke is its physical or chemical activation in order to obtain a highly porous carbon material that can be used as a catalyst carrier, adsorbent, base for electrodes, etc. The possibility of using petroleum coke to produce sorbent for organic compounds was studied. The activated petroleum cake was obtained by chemical activation with KOH, a specific surface area is 1218 m2/g. Sorption of ethyl alcohol was studied at temperatures 285, 293 and 300 K. It is a physical process proceeding mainly in pores of activated petroleum coke, also sorption can be described as a reversible exothermic process. The effective Gibbs energy at a temperature of 293 K is –12.74 kJ/mol, the heat of sorption is –26.07 kJ/mol. The obtained data confirm that porous carbon material obtained from petroleum coke can be used as sorbent for ethanol at room temperature. For example, for adsorption of bioethanol from the effluent of the fermentation process or for purification of wastewater from organic compounds.

How to cite: Litvinova T.E., Tsareva A.A., Poltoratskaya M.E., Rudko V.A. The mechanism and thermodynamics of ethyl alcohol sorption process on activated petroleum coke // Journal of Mining Institute. 2024. Vol. 268. p. 625-636. EDN YUGLTO