Designing microporous activated carbons from biomass for carbon dioxide adsorption at ambient temperature. A comparison between bagasse and rice by-products

Pulping in agro-waste processes are known to affect the chemical constituents of materials obtained. In this study, activated carbons (ACs) were prepared using precursors based on rice straw, husks and bagasse. The composition these was first determined order study influence components each sorption properties ACs ash content by calcination as main component present ashes is silica, which play a role processes. surface chemistry assessed ammonia thermo-desorption (NH3-TPD), before being tested for carbon dioxide capture. obtained from bagasse capable capturing up 14 wt % at atmospheric pressure 25 °C, regardless pulping process applied precursor. Rice-husks AC gave similar result when precursor pulped with 12% soda solution. Rice straw less interesting terms CO2 These differences rationalized textural properties.