Fig. 2From: Preparation and characterisation of activated carbon from Vitisvinifera leaf litter and its adsorption performance for aqueous phenanthreneFTIR spectra of produced chars vs raw biomass a H3PO4 acid activated and inactivated chars versus raw biomass. b ZnCl2 activated and inactivated versus raw biomass. PAac: activated with H3PO4 at 5:2 biomass to H3PO4 ratio. PBac: activated with H3PO4 at 5:1 biomass to H3PO4 ratio. PCac: activated with H3PO4 at 10:1 biomass to H3PO4 ratio. Nac: charred with no activating agent. Raw: raw grape leaf litter. ZAac: activated with ZnCl2 at 5:2 biomass to ZnCl2 ratio. ZBac: activated with ZnCl2 at 5:1 biomass to ZnCl2 ratio. ZCac: activated with ZnCl2 at 10:1 biomass to ZnCl2 ratioBack to article page