Figure 4

Effect of pH on (a) Cu2+ and (b) Ni2+ removal of the synthesized wastewater during the ADS and ADS/EC coupling processes (AGWTR dose = 1 g L−1, Initial conc. = 20 mg L−1 and Current density = 1.19 mA cm−2).

Effect of pH on (a) Cu2+ and (b) Ni2+ removal of the synthesized wastewater during the ADS and ADS/EC coupling processes (AGWTR dose = 1 g L−1, Initial conc. = 20 mg L−1 and Current density = 1.19 mA cm−2).