Supplementary Information:
Fig. S1. Advantages of Lewatit MonoPlus resins.
Pressure drop
Kinetics
better kinetics,
very sharp
exhaustion front
Mechanical,
chemical and
osmotic stability
high mechanical,
osmotic stability,
high resistance to
oxidants
higher permissible
pressure drop across
the resin bed
Lewatit
MonoPlus
resins
Operating capacity
higher operating
capacity
Logistics
greater
versability of
application
1
Fig. S2. Speciation of palladium(II) metal ion as a function of log from the total chloride
concentration (metal concentration 100 mg/L)
Table S1. Analytical methods and apparatus parameters description in palladium(II)
Method
Apparatus
Iodide method
Specord M 42;
Carl Zeiss Jena,
Germany
AAS
method
determination.
Fast Sequential
Atomic
Absorption
Spectrometer,
Varian AA240FS
Parameters
wave length, 407 nm
split width, 1 mm
integration time, 1 s
determination range,
0.2 – 10 mg/L
detection limit, 0.2 mg/L
lamp current, 10 mA
slight width, 0.2 nm
acetylene flow, 2 dm3/min
air flow,13.5 dm3/min
Additional information
Procedure:
1) unknown concentration of
Pd(II), 2) 5 cm3 6 M HCl, 3) 10
cm3 of 20 % KI,
4) 2-6 cm3 of 1 % ascorbic acid,
1-cm cell against blank test
AAS spectrometer equipped with
the appropriate hollow cathode
lamps and SIPS autosampler
2
Table S2. Comparison of kinetic parameters of Pd(II) sorption on Lewatit MonoPlus SR-7.
Pseudo-first order kinetic equation
3
qe.exp
qe
k1
R2
0.1 M HCl
9.99
4.50
1.00
0.631
1.0 M HCl
9.82
0.80
0.99
0.787
3.0 M HCl
8.45
0.36
0.93
0.913
6.0 M HCl
3.68
0.55
0.57
0.973
log (qe - qt)
Systems
0.1 - 6.0 M HCl - 100 mg Pd(II)/dm
2
0
0
100
-4
k2
h
R2
0.1 M HCl
9.99
0.42
41.93
1.000
1.0 M HCl
9.83
0.08
7.68
1.000
3.0 M HCl
8.47
0.03
1.89
1.000
6.0 M HCl
3.70
0.05
0.66
1.000
1.0 M HCl
3.0 M HCl
6.0 M HCl
3.0 M HCl
6.0 M HCl
100
80
60
0.1 M HCl
1.0 M HCl
3.0 M HCl
6.0 M HCl
40
20
0
0
100
200
300
t [min]
400
500
0.1 - 6.0 M HCl - 100 mg Pd(II)/dm3
2
R
0.32
0.869
0.25
0.926
0.50
0.999
10
8
6
4
2
0
0.37
0.998
0.1 M HCl
qt [mg/g]
1.0 M HCl
500
t [min]
0.1
-6 M HCl
t/qt [min g/mg]
qe
0.1 M HCl
400
0.1 - 6.0 M HCl - 100 mg Pd(II)/dm3
Systems
Systems
300
-2
Pseudo-second order kinetic equation
Intarparticle diffusion model
kint
200
0
5
10
15
20
25
30
t1/2 [min1/2]
1.0 M HCl
3.0 M HCl
35
40
6.0 M HCl
3