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Adsorption Science & Technology
/
2023
/
Article
/
Tab 2
/
Research Article
Recovery of Palladium from Acidic Solution Using Polyethylenimine-Crosslinked Calcium Silicate Hydrate Derived from Oyster Shell Waste: Adsorption and Mechanisms
Table 2
Kinetic parameters of Pd(II) adsorption onto PEI-CSH.
Models
Parameter
Value
PFO
(mg/g)
96.43
(L/min)
0.0564
0.966
PSO
(mg/g)
100.10
0.0008
8.65
0.998
Elovich
(mg/g∙min)
27.1856
(g/mg)
0.0590
0.976
Intraparticle diffusion
First stage
(mg/g∙min
0.5
)
12.0042
(mg/g)
2.5736
0.964
Second stage
(mg/g∙min
0.5
)
1.3402
(mg/g)
78.8017
0.976
Third stage
(mg/g∙min
0.5
)
0.1813
(mg/g)
96.2293
0.999