Physical and chemical properties of activated carbon synthesized from plant wastes and shungite for CO2 capture
Kishibayev K.K. Serafin J. Tokpayev R.R. Khavaza T.N. Atchabarova A.A. Abduakhytova D.A. Ibraimov Z.T. Sreńscek-Nazzal J.
December 2021Elsevier Ltd
Journal of Environmental Chemical Engineering
2021#9Issue 6
Highly microporous inexpensive activated carbons have been prepared using a physical activated method based on biomass (corn cobs, grape seeds, birch, and pine cones) and shungite minerals. These materials were investigated as sorbents for CO2 adsorption. Textural characterization of these activated carbons were measured by nitrogen adsorption-desorption at 77 K, scanning electron microscopy, FTIR spectroscopy, XRD, Raman spectrometry, elemental analysis by XRF. The specific surface area values were on the range 424–738 m2·g−1 and total pore volume from 0.27 cm3·g−1 to 0.50 cm3·g−1. The highest CO2 capture capacity received Birch activated carbon 4.50 mmol·g−1 and 4.06 mmol·g−1at 273 K and 298 K, respectively. The CO2 adsorption seems to depend on the presence of narrow micropores (<1 nm) rather than on the pore volume or surface area of activated carbons. Therefore, these microporous carbons exhibit a high CO2 capture rate. Furthermore, birch showed good selectivity up to 91.3 for CO2-N2 separation and can be easily regenerated after 1, 5, 10, 15 cycles.
Activated carbon , Biomass waste , CO2 capture , Micropores
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Center of Physical-Chemical Methods of Research and Analysis, Al Farabi Kazakh National University, 96 A, Tole bi Street, Almaty, 050012, Kazakhstan
Department of Chemical Engineering, Universitat Politècnica de Catalunya, Eduard Maristany 16, EEBE, Barcelona, 08019, Spain
Engineering of Catalytic and Sorbent Materials Department, West Pomeranian University of Technology in Szczecin, Pulaskiego 10, Szczecin, 70–322, Poland
Center of Physical-Chemical Methods of Research and Analysis
Department of Chemical Engineering
Engineering of Catalytic and Sorbent Materials Department
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