Abstract:
The escalating global energy demand can be met through the utilization of non-renewable fossil fuels; however, this reliance on fossil fuels has led to the significant release of carbon dioxide (CO2), a major contributor to the greenhouse gas effect (GHGs). The resultant climate change and global warming necessitate urgent action to mitigate these effects. To combat global warming and climate change, it is imperative to reduce the excessive levels of CO2 in the atmosphere. This underscores the importance of employing carbon capture and storage (CCS) techniques.
CCS involves the use of various solid adsorbents to capture excess CO2 from the atmosphere, which can then be stored in aquifers or sequestered underground. In this study, zeolite and activated carbon derived from sugarcane bagasse were investigated as potential adsorbents for CO2 capture from the atmosphere. The adsorption capacities of these materials were evaluated, revealing that activated carbon exhibited a higher CO2 adsorption capacity (65 mg/g) compared to zeolite (50 mg/g). Notably, both materials outperformed commercial adsorbents in terms of adsorption capacity.
The adsorption isotherm and kinetic models employed in this research yielded high correlation coefficients (R2 values of 0.9859 and 0.9691, respectively), indicating a favorable adsorption process. An increase in temperature from 25°C to 100°C resulted in decreased adsorption capacities of the adsorbents, while increasing the adsorbent dosage from 0.5g to 1.5g led to a substantial increase in adsorption capacities for both zeolite and activated carbon.
Additionally, BET analysis revealed surface areas of 224.2m2/g for activated carbon and 388.3m2/g for zeolite. The calculated activation energies (Ea) of 15.3 KJ/mol for activated carbon and 13.5 KJ/mol for zeolite indicated that the adsorption process follows a physiosorption mechanism. These findings highlight the potential of zeolite and activated carbon from sugarcane bagasse as effective adsorbents for CO2 capture, contributing to efforts aimed at mitigating climate change and global warming.
ZEOLITE (ZSM-5) VS. ACTIVATED CARBON DERIVED FROM SUGARCANE BAGASSE, GET MORE, ACTUARIAL SCIENCE PROJECT TOPICS AND MATERIALS
