CO₂ capture through electro-conductive adsorbent using physical adsorption system for sustainable development.

Area of Science:

• Environmental Science
• Materials Science
• Chemical Engineering

Background:

• Minimizing fossil fuel dependence is crucial for global energy and environmental challenges.
• Carbon dioxide capture is vital for achieving a carbon-neutral energy cycle and mitigating climate change.
• Activated carbon (AC) adsorption is an effective, eco-friendly, and techno-economic method for carbon capture.

Purpose of the Study:

• To develop an electro-conductive activated carbon material for improved CO2 capture.
• To investigate the impact of mixing powdered activated carbon (PAC) with electro-conductive polymers (ECP) on CO2 adsorption and desorption.
• To evaluate the techno-economic feasibility and environmental sustainability of the developed material.

Main Methods:

• Preparation of electro-conductive activated carbon by mixing PAC with ECP in various ratios (0-100 wt%).
• Analysis of activated carbon samples using a physical adsorption system with a CO2/N2 gas mixture.
• Examination of adsorption/desorption capacities, breakthrough times, and desorption effects under different potentials.

Main Results:

• Mixing PAC with ECP increased CO2 adsorption breakthrough time by up to 400%.
• The composite material improved packed bed system performance by overcoming packing issues, enhancing breakthrough capacity.
• Fast desorption rates were observed for PAC mixed with ECP, indicating efficient regeneration.

Conclusions:

• The developed electro-conductive activated carbon shows significant potential for efficient and cost-effective carbon capture.
• This method offers a promising pathway for sustainable development and environmental protection.
• The enhanced adsorption and desorption properties make it a viable technology for industrial applications.