CO₂-Assisted Sugar Cane Gasification Using Transition Metal Catalysis: An Impact of Metal Loading on the Catalytic...

Area of Science:

• Renewable Energy
• Catalysis
• Biomass Conversion

Background:

• Growing demand for non-fossil fuels necessitates efficient conversion of bio-wastes.
• Sugarcane bagasse is an abundant lignocellulosic biomass with potential for fuel production.
• Carbon dioxide (CO2) emissions reduction is a key environmental goal.

Purpose of the Study:

• To investigate the CO2-assisted gasification of sugarcane bagasse.
• To optimize catalyst composition (Fe, Co, Ni) for enhanced CO production.
• To evaluate catalyst performance in converting biomass into valuable substances.

Main Methods:

• Gasification of sugarcane bagasse using CO2 as a gasifying agent.
• Systematic variation of metal catalysts (Fe, Co, Ni) and their concentrations.
• Characterization of catalysts using SEM, EDX, TEM, XRD, and electron diffraction.
• Testing catalyst activity in CO2-assisted gasification at approximately 800 °C.

Main Results:

• Cobalt (Co) and Nickel (Ni) based catalysts exhibited superior performance compared to iron (Fe) or pure sugarcane bagasse.
• CO2 conversion reached up to 88% with Co and Ni catalysts, significantly higher than the 20% conversion for pure bagasse.
• Characterization revealed metallic Co and Ni in the active catalysts, while Fe remained in oxide form.

Conclusions:

• Co and Ni catalysts are highly effective for CO2-assisted gasification of sugarcane bagasse.
• This process offers a viable route for producing fuels from biomass waste while mitigating CO2 emissions.
• Optimized catalyst formulation is crucial for maximizing conversion efficiency in biomass gasification.