Abstract
The regeneration of WPAC through pyrolysis and its adsorption capacity of phosphorus were studied. The optimum conditions for WPAC regeneration were 650 °C and 2 h which resulted in a recovery of BET surface and total pore volume with a value of 1161.4 m(2)/g and 1.2176 m(3)/g. WPAC had a maximum PO(4)(3-)-P adsorption capacity of 9.65 mg/g which was 48.93% of PAC, while RWPAC had a maximum PO(4)(3-)-P adsorption capacity of 15.31 mg/g which was 77.64% of PAC. The kinetic analysis revealed that Langmuir model could well describe the adsorption process of PAC, WPAC and RWPAC on PO(4)(3-)-P and the PO(4)(3-)-P adsorption followed the pseudo-second-order model.