Influence of the type of activation on the specific surface area of the activated carbon of arabica coffee residue from Chanchamayo

Abstract

It is present that nowadays the development of activated carbon has great importance for its numerous applications in different industries due to its adsorption capacity, which depends on the method of obtaining it, taking into account that for the development of the specific surface it was found incidence in the control of the variables temperature and calcination time, as well as the type of biomass with high carbon content being in our case the residues as the one obtained after the preparation of the beverage which have been increasing considerably by the demand of the beverage. This research seeks to identify the methodology that provides better results for the increase of the specific surface (generation of pores adsorbent surface), taking into account a chemical activation of the substrate for which two chemical solutions were used, one alkaline as is the case of sodium hydroxide and the other acidic being phosphoric acid. The results confirm that it is possible to produce activated carbon with acceptable characteristics from coffee residue by means of chemical activation in a single heating stage, a process that allows savings in operation time and general costs, obtaining better results in the development of specific surface with acid activation and at a higher activation temperature.