View article

In this study, activated carbons (ACs) were prepared from coffee waste via a twostage self-generated atmosphere method after impregnation by zinc chloride (ZnCl2). The effect of impregnation ratio (IR) on the physicochemical properties and adsorption capacity for 2, 4-dichlorophenol (2, 4-DCP) was studied. Characterizations of the generated ACs were carried out todetermine the percentage of yield, moisture and ash contents, pH, surface chemistry studies andmorphological attributes. The results showed that the yield of AC decreased from 41.16% to 37.12% with the increase in IR. As for moisture and ash contents, the percentage values ranged from 4.18%