Valorization of residue from agro-industrial cocoa production in the preparation of activated carbon for CO2 capture

Valorization of residue from agro-industrial cocoa production in the preparation of activated carbon for CO2 capture

• Autor
• Geovana C.S. Ferreira
• Co-autores
• Rodrigo I.P. Véras , Tamille Alves Souza , Raildo A. Fiuza Jr , Karen V. Pontes
• Resumo

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  Carbon dioxide (CO₂) represents the majority of greenhouse gas emissions. Thus, CO₂ capture is an alternative to mitigating thise environmental impact. The objective of this work is to study the feasibility of transforming the cocoa residue into activated carbon as adsorbent in CO₂ capture. Initially, the potential of cocoa residue for the production of adsorbents was evaluated through the following characterizations: Immediate analysis, WD-XRF, XRD and SEM. In sequence, activated carbon from cocoa residue was characterized by WD-XRF, XRD, SEM, textural analysis and evaluated in CO₂ capture. The cocoa residue presented 25% of fixed carbon and 61.67% of potassium oxide in its composition. The activated carbon presented a significant surface area (685.7m².g^-1), favoring the adsorption of 6.7% CO₂. These results prove that cocoa residue has high potential for application as activated carbon in CO₂ capture.

   

• Palavras-chave
• Adsorption, activated charcoal, cocoa residue, CO2.
• Área Temática
• Adsorção aplicada ao meio ambiente