Figure 7

Removal efficiency of PO43− on BC at various Fe3O4 and MgO loadings; PO43− concentration: 10 ppm, BC loading: 2 g/L, pH: 8.5, agitation speed: 150 RPM, adsorption time: 4 h.

Removal efficiency of PO43− on BC at various Fe3O4 and MgO loadings; PO43− concentration: 10 ppm, BC loading: 2 g/L, pH: 8.5, agitation speed: 150 RPM, adsorption time: 4 h.