XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 607
Table 2. Uptake*) of elements from AMD1, Al-depleted AMD1, and AMD2
AMD1 Al-Depleted AMD1
AMD1 Treated
at –0.30 V AMD2
–0.30 V,
40 mL
–0.75 V,
20 mL
–0.30 V,
40 mL
–0.75 V,
40 mL
–0.75 V,
30 mL
–0.30 V,
40 mL
Cu 90% 95–98% 99% 99% 2–5% 95%
Al 90% 95–98% 99% 99% 2–5% no
U 50% 95–98% 99% 99% 2–5% no
TREE 5% 95–98% 99% 99% 90% 90%
Zn 5% 95–98% 95% 99% 80% 95%
Co 5% 80% 20% 80% 30% 95%
Ni 5% 80% 20% 75% 30% 95%
Si 5% 50% 30% 40% 25% 25%
Mn 5% 40% 10% 35% 15% 95%
WTR† 9 L/(kg
RVC×min)
120 L/(kg
RVC×min)
35 L/(kg × min) 175 L/(kg
RVC×min)
100 L/(kg
RVC×min)
140 L/(kg
RVC×min)
SRRCu/C0(Cu),
L g(RVC)–1 min–1
(8.0±0.2) ×
10–3
(4.5±0.1) ×
10–2
(5.4±0.1) ×
10–2
0.16±0.01 (8.3±0.2) ×
10–2
0.13±0.01
SRR
Zn /C
0(Zn) ,
L g(RVC)–1 min–1
¾ 3.6 × 10–2 (6.6±0.2) ×
10–3
4.6 × 10–2 8.1 × 10–2 0.13
*the uptake in the plateau region of the kinetic curves † the uptake rate in the linear region of the kinetic curves
0 10 20 30 40 50
0
20
40
60
80
100
Time (min)
Mg
Ca
Mn
Fe
Co
Ni
Cu
Zn
Sr
U
Cu
U
4.2
4.4
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.2
pH
0 10 20 30 40 50
0
20
40
60
80
100
Time (min)
Al
Si
Y
La
Ce
Nd Von
a b
0.30 V 0.30 V
0.50 V
0 10 20 30 40
0
20
40
60
80
100 Co
Cu
Zn
U
Ni
Al
Y
La
Ce
Nd
Mn
Ca
Mg
4
5
6
Time (min)
Von
5
6
7
8
9
pH
-2 0 2 4 6 8 10 12
0
20
40
60
80
100
Time (min)
Mn
Fe
Co
Ni
Cu
Zn
Al
Si
Y
La
Ce
Nd
Mg
Ca
U
d c
0.75 V
AMD1
Von
Figure 3. Effect of potential on recovery (uptake) of elements from AMD1 at (a,b) –0.30 V, (c) –0.50 V, (c) –0.75 V in (a,b,c) a
40-mL and (d) 20-mL cell with a 19×17×5 mm3 (0.114 g) RVC electrode. The right Y axes show pH in the solution during the
tests. V
on shows the moment when potential is applied. Copyright © 2023 Chernyshova, Suup, Kihlblom, Kota, Ponnurangam
Uptake
(
pH Uptake(%)
Uptake(%)
pH pH Uptake(%)
Table 2. Uptake*) of elements from AMD1, Al-depleted AMD1, and AMD2
AMD1 Al-Depleted AMD1
AMD1 Treated
at –0.30 V AMD2
–0.30 V,
40 mL
–0.75 V,
20 mL
–0.30 V,
40 mL
–0.75 V,
40 mL
–0.75 V,
30 mL
–0.30 V,
40 mL
Cu 90% 95–98% 99% 99% 2–5% 95%
Al 90% 95–98% 99% 99% 2–5% no
U 50% 95–98% 99% 99% 2–5% no
TREE 5% 95–98% 99% 99% 90% 90%
Zn 5% 95–98% 95% 99% 80% 95%
Co 5% 80% 20% 80% 30% 95%
Ni 5% 80% 20% 75% 30% 95%
Si 5% 50% 30% 40% 25% 25%
Mn 5% 40% 10% 35% 15% 95%
WTR† 9 L/(kg
RVC×min)
120 L/(kg
RVC×min)
35 L/(kg × min) 175 L/(kg
RVC×min)
100 L/(kg
RVC×min)
140 L/(kg
RVC×min)
SRRCu/C0(Cu),
L g(RVC)–1 min–1
(8.0±0.2) ×
10–3
(4.5±0.1) ×
10–2
(5.4±0.1) ×
10–2
0.16±0.01 (8.3±0.2) ×
10–2
0.13±0.01
SRR
Zn /C
0(Zn) ,
L g(RVC)–1 min–1
¾ 3.6 × 10–2 (6.6±0.2) ×
10–3
4.6 × 10–2 8.1 × 10–2 0.13
*the uptake in the plateau region of the kinetic curves † the uptake rate in the linear region of the kinetic curves
0 10 20 30 40 50
0
20
40
60
80
100
Time (min)
Mg
Ca
Mn
Fe
Co
Ni
Cu
Zn
Sr
U
Cu
U
4.2
4.4
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.2
pH
0 10 20 30 40 50
0
20
40
60
80
100
Time (min)
Al
Si
Y
La
Ce
Nd Von
a b
0.30 V 0.30 V
0.50 V
0 10 20 30 40
0
20
40
60
80
100 Co
Cu
Zn
U
Ni
Al
Y
La
Ce
Nd
Mn
Ca
Mg
4
5
6
Time (min)
Von
5
6
7
8
9
pH
-2 0 2 4 6 8 10 12
0
20
40
60
80
100
Time (min)
Mn
Fe
Co
Ni
Cu
Zn
Al
Si
Y
La
Ce
Nd
Mg
Ca
U
d c
0.75 V
AMD1
Von
Figure 3. Effect of potential on recovery (uptake) of elements from AMD1 at (a,b) –0.30 V, (c) –0.50 V, (c) –0.75 V in (a,b,c) a
40-mL and (d) 20-mL cell with a 19×17×5 mm3 (0.114 g) RVC electrode. The right Y axes show pH in the solution during the
tests. V
on shows the moment when potential is applied. Copyright © 2023 Chernyshova, Suup, Kihlblom, Kota, Ponnurangam
Uptake
(
pH Uptake(%)
Uptake(%)
pH pH Uptake(%)