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Cement-based and alternative cementitious materials were tested in the laboratory for their capability of removing phosphate from wastewater.The results demonstrated that both Langmuir and Freundlich adsorption isotherms were suitable for describing the adsorption characteristics of these materials.Among the four types of filter media tested, the cement-based mortar A has the highest value of maximum adsorption (30.96 mg g-1).The P-bonding energy (KL) and adsorption capacity (K) exhibited a positive correlation with the total content of A1203 and Fe203 in each mortar.The maximum amount of P adsorbed (Qm) and adsorption intensity (1/n) exhibited a positive correlation with the CaO content in each mortar.For three of them, the P-removal rates were in excess of 94 percentfor phosphorus concentrations rangingfrom 20 to 1 000 mg L-1.The underlying mechanisms were examined using field emission scanning microscopy (FESEM), coupled with energy-dispersive X-ray spectroscopy (EDX) and X-ray powder diffraction (XRD).The results reveal that the removal of phosphate predominantly followed a precipitation mechanism in addition to weak physical interactions between the surface of adsorbent filter mediaand the metallic salts of phosphate.The use of cement-based oralternative cementitious materials in the form of ground powder shows great promise for developing a cost-effective and environmentally sustainable technology for P-sequestration and for wastewater treatment.