Carbon dioxide (CO₂) capture and sequestration using biofuels and an exhaust catalytic carbon capture system in a single-cylinder CI engine: an experimental study

ABSTRACT

In the present study, tests were conducted to reduce CO₂ emissions from a single-cylinder CI engine using biofuels and an exhaust catalytic carbon capture system (ECCCS) to evaluate CO₂ sequestration of biofuels. Karanja oil is a second generation non-edible oil available abundantly in India. A Karanja oil methyl ester (KOME) operated CI engine emits higher CO₂ emissions due to the higher carbon content in its structure compared to diesel. Hence, the low carbon biofuel Orange oil (ORG) was blended on an equal volume basis with KOME. The blend reduced CO₂ emissions by 27% compared to KOME at 100% load condition. For further enhancement, acetone (A) was blended 20% by volume basis with the KOME-ORG blend. CO₂ emissions were reduced by about 30% for KOME-ORG + A20 blend compared to KOME at 100% load condition. Employing ECCCS along with KOME-ORG + A20 blend reduces CO₂ emissions further. CO₂ emissions are reduced by about 44% for KOME-ORG + A20 + Zeolite and reduced by about 32% for KOME-ORG + A20 + activated carbon. The results clearly indicate that KOME-ORG + A20 + zeolite is optimal among the blends based on carbon capture and maximum CO₂ sequestration.

KEYWORDS:

• CO₂ capture and sequestration
• carbon capture system
• NO-CO₂ tradeoff
• zeolite
• activated carbon

Disclosure statement

No potential conflict of interest was reported by the authors.