Unprecedented Low-Cost Hybrid Material for CO 2 and CH 4 Separation

Abstract

Abstract: The zeolite synthesis using waste as silicon source is a promising low-cost process. Sugarcane bagasse ash is a hazardous solid waste generated in large amounts in the sugar industry. Thus, development of new procedures for its productive reuse is relevant. Therefore, this waste was used to prepare a new ZCNT (zeolite/carbon nanotube material). In this work, ZCNT was applied in a CO 2 /CH 4 separation. The adsorption took place at 303 K under pressure of 0.1 until 20 bar and the data were fitted by Langmuir, Toth and Freundlich equations. The adsorbed amount at 20 bar found was 4.7 mmol of CO 2 /g and 4.1 mmol of CH 4 /g; at 3 bar the adsorbed amount was 4.1 mmol of CO 2 /g and 1.2 mmol of CH 4 /g. This result indicates that ZCNT has potential application in CO 2 /CH 4 separation at low pressures