TY  - JOUR
A1  - Trautmann, Michael
A1  - Holdt, Hans-Jürgen
T1  - Separation of platinum and ruthenium by a sulphoxide modified polystyrene resin in laboratory column systems
JF  - Separation and purification technology
N2  - The present study deals with the adsorption performance of fixed bed columns using powdered sulphoxide modified poly(styrene-co-divinylbenzene) (d(10) < 13 mu m, d(50) < 30 mu m, d(90) < 50 mu m) for the separation of platinum and ruthenium from hydrochloric acidic solutions containing both metals (c(Pt) = 20 mg/L, c(Ru) = 10 mg/L). The influence of hydrochloric acid concentration, temperature, flow rate, flow direction, redox potential and bed height on the breakthrough characteristics was examined. Platinum was separately adsorbed mainly induced by hydrochloric acid concentration and redox potential keeping platinum as Pt-IV and ruthenium as Ru-III. Ruthenium was separately adsorbed to 90% essentially induced by hydrochloric acid concentration, temperature and redox potential keeping platinum as Pt-IV and ruthenium predominantly as Ru-IV. Experimental data at optimised separation conditions were fitted to different kinetic models (Thomas, Yoon-Nelson, Bohart-Adams, Wolborska) to characterise the fixed bed column behaviour. Adsorption of both metals was well described by Thomas and Yoon-Nelson model with correlation coefficients R-2 >= 0.95 whereas Bohart-Adams and Wolborska model were less suitable. (C) 2015 Elsevier B.V. All rights reserved.
KW  - Solid-phase extraction
KW  - Platinum group metals
KW  - Sulphoxide
KW  - Breakthrough curve
KW  - Kinetic model
Y1  - 2015
U6  - https://doi.org/10.1016/j.seppur.2015.05.013
SN  - 1383-5866
SN  - 1873-3794
VL  - 149
SP  - 279
EP  - 287
PB  - Elsevier
CY  - Amsterdam
ER  -