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 m2/g and 1.2176 m3/g. WPAC had a maximum PO43−-P adsorption capacity of 9.65 mg/g which was 48.93% of PAC, while RWPAC had a maximum PO43−-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 PO43−-P and the PO43−-P adsorption followed the pseudo-second-order model.
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