Influence of SO2 on CO2 capture using 13X zeolite

Influence of SO2 on CO2 capture using 13X zeolite

• Autor
• Francisca Nicolle Christina Teixeira
• Co-autores
• Enrique Vilarrasa-Garcia , Rafaelle Gomes Santiago , Célio Loureiro Cavalcante Junior , Moises Bastos Neto , Rodrigo Almeida Silva da Costa
• Resumo

• Combustion gases, mainly from the burning of fossil fuels, are composed of a complex mixture of atmospheric pollutants, with carbon dioxide (CO?) as one of the main ones. Technologies such as adsorption are promising for capturing this pollutant, but the presence of contaminants such as sulfur dioxide (SO?) may negatively interfere with this process, requiring a detailed understanding of their impacts on the efficiency of CO? capture systems. This study investigated the effects of SO? on the CO? retention capacity of an adsorbent, using 13X zeolite in conditions like those of post-combustion. The results showed that the 13X zeolite sample has higher affinity for adsorbing SO? compared to CO? under all tested pressure and temperature conditions. While both gases may be captured and fully regenerated using appropriate methods, the impact of SO? on the textural properties of the zeolite suggests the need for a pre-treatment step to remove SO? from the gas stream. These findings indicate that it is feasible to capture and remove both CO? and SO? using a single unit, which simplifies industrial emission control processes and enhances CO? capture efficiency. The high selectivity and regeneration capacity of 13X zeolite underscore its effectiveness as an adsorbent in combustion gas capture systems, significantly contributing to the mitigation of environmental impacts caused by CO? emissions.

• Palavras-chave
• Carbon dioxide; Sulfur dioxide; Adsorption; 13X Zeolite
• Área Temática
• Fundamentos de Adsorção