Fig. 7 | Scientific Reports

Fig. 7

From: Effective removal of heavy metal ions (Pb, Cu, and Cd) from contaminated water by limestone mine wastes

Fig. 7

The relationship between adsorbent dosage and removal percentage of Pb2+ (a), Cu2+ (b), and Cd2+ (c, d) for limestone (CO3) and calcined limestone (CaO). Experiment conditions for CaCO3: t: 30 min., Ci: pb2+  = 500 ppm, Cu2+ = 100 ppm, and Cd2+  = 50 ppm, pH: 5. Experiment conditions for CaO: t: 30 min., Ci: pb2+  = 1000 ppm, Cu2+ = 500 ppm, and Cd2+  = 150 ppm, pH: 5.

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