A sorption study of Pd(II) on aminomethylphosphonic Purolite resin S-940

Abstract

Many methods for the preconcentration-recovery of platinic metals are based on complexing sorbents. As platinic metals have a high tendency to form com plexes, the complex-forming sorbents are particularly useful. This study concerns the sorption of Pd(II) on aminomethylphosphonic Purolite S-940 resin. In order to establish the optimum conditions of Pd(II) sorption on S-940 resin, the influence of the following experimental conditions: solution pH, Pd(II) initial concentration and temperature were studied. The yield of Pd(II) recovery was maximum in buffer solutions of pH 3?5 and decreases with increasing initial concentration of the solution. The equilibrium distribution of Pd(II) between the two phases (sorbent and solution) is described by the Langmuir model of monomolecular layer adsorption. The thermodynamic quantities characteristic for the Pd(II) sorption process suggest an affinity of the Purolite resin S-940 for Pd(II).

Applicability of New Acrylic, Weakly Basic Anion Exchanger Purolite A-830 of Very High Capacity in Removal of Palladium(II) Chloro-complexes

“…Moreover, comparison of the R 2 values showed the Langmuir isotherm to much better describe the palladium(II) sorption process onto Purolite A-830 because of the high correlation coefficient. A comparison between the maximum sorption capacities obtained for Purolite A-830 and other (bio)sorbents (Table S6 ,,− ,− ) shows that the capacities of the A-830 are much higher than many other ones. The differences of palladium(II) uptake on various sorbents are due to those in their functional groups, particle size, surface area, etc.…”

Sorption of Uranium(VI) and Thorium(IV) by Jordanian Bentonite

“…Where parameter is related to the strength of the sorbed ion adsorbent binding (i.e., orium(IV) ions-bentonite), is the saturation sorption capacity, is a parameter related to the sorption capacity, and n is a measure of the sorption intensity [22,23].…”

Water-Gated Transistor Using Ion Exchange Resin for Potentiometric Fluoride Sensing

“…However, a number of similar ion exchange membranes are available as sorbents for highly toxic or precious trace elements in water, where extremely low LoD is essential and cannot be achieved by electrochemical sensors with Nikolsky–Eisenman characteristics. Examples are sorbent resins for arsenic- and gold-containing anions [ 20 , 21 ], and copper [ 22 ], mercury [ 23 ], and palladium [ 24 ] cations. Our work establishes a template for the way in which the entire organic resin sorbent family can be used as sensitisers in WGTFTs when an ultra-low limit-of-detection is essential.…”

“…Most importantly, our work sets a template for the use of a new family of sensitisers, namely ion exchange resins, in WGTFT-based sensors for water pollutants. Such resins are available as sorbents for very harmful, or precious, water pollutants (arsenic, gold, copper, mercury, palladium [ 20 , 21 , 22 , 23 , 24 ]). Following this work, these sorbents can now easily be adapted for the sensing of such pollutants as well.…”