XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 697
Figure 5a showed that the total thiocyanate removal
was higher at higher applied voltages, 558 mg/m2 at 1 V
and 2300 mg/m2 at 3 V, despite a slight decrease at 5 V. In
addition, the thiocyanate removal efficiency was increased
from 21% at 1 V to 85% at 3 V (Figure 5b).
Effect of Influent Concentration
Concentration changes of thiocyanate at different time
intervals for the continuous flow test with different influ-
ent concentrations ranging from 5 mg/L to 20 mg/L were
measured at 3 V with a flow rate of 1.5 mL/min during 180
minutes.
According to the results given in Figure 6, the thio-
cyanate concentration in the effluent reached its mini-
mum value in 10 minutes for all experiments. The effluent
concentration remained stable at 5 mg/L for 120 min-
utes and increased slightly to 1.59 mg/L after 180 min-
utes. At 10 mg/L, thiocyanate concentration in treated
water decreased to 0.57 mg/L within 10 minutes and
increased to 4.34 mg/L after 180 minutes. As the number
of ions between the electrodes increased, the desalination
0
20
40
60
80
100
1 3 5
Voltage (V)
0
500
1000
1500
2000
2500
3000
1 3 5
Voltage (V)
a) b)
Figure 5. Effect of applied voltage on desalination performance. a) total thiocyanate removal during
180 min treatment b) %thiocyanate removal efficiency during 180 min treatment. All experiments were
performed by using 5 mg/L thiocyanate solution at a constant flow rate of 1.5 mL/min
0
5
10
15
20
0 15 30 45 60 75 90 105 120 135 150 165 180
Operation Time (min.)
5 mg/L
10 mg/L
20 mg/L
Figure 6. The concentration changes of thiocyanate at different time intervals for the continuous flow test
of initial concentrations of 5 mg/L, 10 mg/L and 20 mg/L. All experiments were performed at a constant
voltage of 3 V and a constant flow rate of 1.5 mL/min
SCN
Removal
Efficiency
%
Total
SCNRemoval
(mg/m2)
[SCN]-
(mg/L)
Figure 5a showed that the total thiocyanate removal
was higher at higher applied voltages, 558 mg/m2 at 1 V
and 2300 mg/m2 at 3 V, despite a slight decrease at 5 V. In
addition, the thiocyanate removal efficiency was increased
from 21% at 1 V to 85% at 3 V (Figure 5b).
Effect of Influent Concentration
Concentration changes of thiocyanate at different time
intervals for the continuous flow test with different influ-
ent concentrations ranging from 5 mg/L to 20 mg/L were
measured at 3 V with a flow rate of 1.5 mL/min during 180
minutes.
According to the results given in Figure 6, the thio-
cyanate concentration in the effluent reached its mini-
mum value in 10 minutes for all experiments. The effluent
concentration remained stable at 5 mg/L for 120 min-
utes and increased slightly to 1.59 mg/L after 180 min-
utes. At 10 mg/L, thiocyanate concentration in treated
water decreased to 0.57 mg/L within 10 minutes and
increased to 4.34 mg/L after 180 minutes. As the number
of ions between the electrodes increased, the desalination
0
20
40
60
80
100
1 3 5
Voltage (V)
0
500
1000
1500
2000
2500
3000
1 3 5
Voltage (V)
a) b)
Figure 5. Effect of applied voltage on desalination performance. a) total thiocyanate removal during
180 min treatment b) %thiocyanate removal efficiency during 180 min treatment. All experiments were
performed by using 5 mg/L thiocyanate solution at a constant flow rate of 1.5 mL/min
0
5
10
15
20
0 15 30 45 60 75 90 105 120 135 150 165 180
Operation Time (min.)
5 mg/L
10 mg/L
20 mg/L
Figure 6. The concentration changes of thiocyanate at different time intervals for the continuous flow test
of initial concentrations of 5 mg/L, 10 mg/L and 20 mg/L. All experiments were performed at a constant
voltage of 3 V and a constant flow rate of 1.5 mL/min
SCN
Removal
Efficiency
%
Total
SCNRemoval
(mg/m2)
[SCN]-
(mg/L)