Tailoring Low-Cost Granular Activated Carbons Intended for CO Adsorption.

Physical adsorption on activated carbons has shown to be a very attractive methodology for CO separation from flue gas streams and biogas. In this context, the goal of this work was to prepare granular activated carbons intended for CO adsorption from an abundant and low-cost biomass residue (coconut shell) by using practical and cost-effective procedures. By the first time, parameters involved in chemical activation with dehydrating agents (HPO or ZnCl) and/or physical activation with CO were systematically screened in depth in order to obtain materials with improved performance for CO adsorption on a volume basis.