Fig. 9From: Preparation and characterisation of activated carbon from Vitisvinifera leaf litter and its adsorption performance for aqueous phenanthreneSEM images of activated carbons before and after adsorption of phenanthrene from aqueous solution. a ZAac (activated with ZnCl2 at 5:2 biomass to ZnCl2 ratio). b ZBac (activated with ZnCl2 at 5:1 biomass to ZnCl2 ratio). c PAac (activated with H3PO4 at 5:2 biomass to H3PO4 ratio)Back to article page