Figure 4

Adsorption performances of MCNC (concentration of iron(III) nitrate enneahydrate solution: 5.0 g L⁻¹).

(a) Dependence on concentration. Carbon, 1 g; time, 1 h; agitating speed, 150 rpm; CsCl solution, 10 mL; particle size, under 150 μm. SrCO₃ in 0.1 mol L⁻¹ HNO₃ solution, 10 mL; particle size, under 150 μm; wavelength, 407.7 nm in ICP analysis. (b) Dependence of pH. Carbon, 2 g; time, 1 h; agitating speed, 150 rpm; CsCl solution concentration, 0.0075 mM (20 mL); particle size, under 150 μm. Buffer solution: hydrochloric acid (triangle), acetic acid/sodium acetate (diamond), Britton-Robinson (square). (c) Demonstration experiments with contaminated water (carbon, 5.0 g; contaminated water, 1 L) and (d) contaminated soil (carbon, 25.0 g; contaminated soil, 100 g; distilled water, 500 mL; agitation, 0.5 h).