Role of amine-impregnated activated carbon in carbon dioxide capture

ABSTRACT

In this work, two types of amine-impregnated activated carbons have been prepared from green coconut shell: Monoethanol amine-impregnated activated carbon (M-AC) and Diethanol amine-impregnated activated carbon (D-AC). Carbon dioxide (CO₂) adsorption was determined by a batch adsorption analysis. Effects of the time and relative pressure on CO₂ adsorption capacity of amine-impregnated activated carbon were studied. From the result, it has been observed that amine-impregnated activated carbons have higher adsorption capacity for CO₂ although there is a decrease in the surface area of activated carbon due to amine impregnation. Among the two impregnated amine activated carbon and monoethanol amine-impregnated activated carbon, impregnation ratio 0.4 shows the highest carbon dioxide adsorption capacity i.e. 36.84 mg g⁻¹.

GRAPHICAL ABSTRACT

KEYWORDS:

• Adsorption
• activated carbon
• chemical impregnation
• carbon dioxide
• amine

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Chemical Engineering Department, Indian Institute of Technology, Kharagpur.