Fig. 2
Influence of (a) applied voltage and (b) superficial velocity on Ca2+ removal efficiency against the treatment times (initial concentration of 625 mg L− 1 as CaCO3)
Fig. 2 | Sustainable Environment Research
Influence of (a) applied voltage and (b) superficial velocity on Ca2+ removal efficiency against the treatment times (initial concentration of 625 mg L− 1 as CaCO3)