Development and Characterization of Triethanolamine Functionalized Coconut Shell Activated Carbon for Carbon Dioxide Adsorption

M.U. Garba1, M. Alhasan1, U. Musa1, B.A. Orhevba2, A.F. Abdulhamid3 and V.O. Agbajaka1,*

Mechanical Engineering Department, Faculty of Engineering, Nigerian Defence Academy, P.M.B. 2109, Kaduna, Nigeria


This study provide an insight into the potential of amine functionalized coconut shell activated carbon for carbon dioxide adsorption and storage. The coconut shell was carbonized (CAC) and chemically activated with KOH. The prepared CAC was further funtionalized with triethanolamine (TCAC). The activated carbons were characterized for its crystallinity, functional group and surface area using X-ray diffraction, Raman spectroscopy and Brunauer-Emmett-Teller theory, respectively before and after carbon dioxide adsorption. The effect of temperatures (40, 50 and 60 ºC) on the rate of CO2 adsorption as a function of time was also investigated. The adsorption capacity of CAC and TCAC were found to be 51 and 62 mg/g, respectively. The results characterization before and after CO2 absorption revealed that the alteration of the structural and function group that favour formation of ammonium bicarbonate and carbonate. This study demonstrates that triethanolamine functionalized coconut activated carbon is a promising adsorbent for CO2 sequestration and storage.


Adsorption, Activated carbon, Carbon dioxide, Triethanolamine, Coconut.

  • Asian J. Mat. Chem. /
  •  2017 /
  •  2(3-4) /
  •  pp 105-108
  • DOI:10.14233/ajmc.2017.AJMC-P47