Investigation of macroporous weakly basic anion exchangers applicability in palladium(II) removal from acidic solutions – batch and column studies

Wołowicz, Anna; Hubicki, Zbigniew

doi:10.1016/j.cej.2011.08.075

Cited by 38 publications

(15 citation statements)

References 46 publications

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“…For the HCl-HNO 3 system, the capacities increase with the HCl concentration increase and HNO 3 concentration decreases. Such behavior was observed previously for about 30 examined ion-exchange resins [4,5,8,12,14,15,20] Table 5. Based on Table 5 the following observations can be made:…”

Section: Column Experimentssupporting

confidence: 55%

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Adsorption characteristics of noble metals on the strongly basic anion exchanger Purolite A-400TL

Wołowicz

Hubicki

2014

J Mater Sci

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Ion exchange is an alternative process for uptake of noble metals from aqueous solutions. In the present study, the sorption of Pd(II), Pt(IV), and Au(III) ions from aqueous solution was investigated by using Purolite A-400TL (strongly basic anion exchanger, gel, type I) in a batch adsorption system as a function of time (1 min-4 h). Initial Pd(II) concentration (100-1000 mg/L), beads size (0.425-0.85 mm), rate of phases mixing (0-180 rpm), and temperatures (ambient, 313 K) were taken into account during the Pd(II) sorption process. Moreover, the column flow adsorption study was carried out, and the breakthrough curves were obtained for Pd(II) ions. The equilibrium, kinetic, desorption, and ion-exchange resin reuse studies were carried out. The experimental results showed that Purolite A-400TL-the strongly basic anion-exchange resin could be used effectively for the removal of noble metal ions from the aqueous medium. The kinetics of sorption process is fast and the resin could be reused without reduction of capacity (three cycles of sorption-desorption, the reduction of capacity is smaller than 1 %). The column studies indicated that in the dilute acidic solution (0.1 M HCl) the working anion exchange capacity is high (0.0685 mg/cm etc. The highest % of Pd(II) desorption was obtained using thiourea, acidic thiourea, sodium hydroxide, and ammonium hydroxide as eluting agents (%D1 was in the range of 23.9-46.9 mg/g).

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Section: Column Experimentssupporting

confidence: 55%

“…In 0.1 M HCl solution quantitative removal of Pd(II) is obtained after only 15 min, whereas for Pt(IV) and Au(III) longer time is needed. Compared to other studies this time is very short and similar to that obtained for the Dowex MSA-1 [14], Lewatite TP-220 [12], and Purolite A-830 [15] ion exchange resins.…”

Section: Analytical Proceduresmentioning

confidence: 60%

Adsorption characteristics of noble metals on the strongly basic anion exchanger Purolite A-400TL

Wołowicz

Hubicki

2014

J Mater Sci

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“…The obtained value is high, and is much higher than that obtained for some commercially available ion exchangers [18,19].…”

Section: Adsorption Isothermmentioning

confidence: 83%

Kinetic studies of the sorption process of Pd(II) chloride complex ions from diluted aqua solutions using commercially available activated carbon

Wojnicki

2017

Reac Kinet Mech Cat

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The kinetics of Pd(II) chloride complex ion recovery from diluted aqueous solutions was investigated using commercially available activated carbon. For this purpose, several different parameters as the influence of temperature, mixing rate, amount of activated carbon applied as well as initial concentrations of Pd(II) chloride complex ions were analyzed. The obtained results showed that the rate of the process is controlled by the mass transfer from the solution to the surface of AC. Therefore, a significant impact of the mixing rate was observed. The activation energy of each step was determined and it is found to be 23.5 ± 1.3, 52.7 ± 5.5 and 22.8 ± 9.5 kJ/mol for adsorption, desorption and reaction of Pd(II) chloride complex transformation. It was shown that commercially available activated carbon, initially designed for gas purification, can be also used for metal ions removal during water purification as well as for precious metal recovery.

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“…This makes it applicable over a wide range of pH. Thanks to that it can be applied as competitive equivalent for anion exchange resin [7][8][9]. From the ecological as well as economical point of view, electrochemical method are inappropriate [10,11].…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric Analysis of the Kinetic of Pd(II) Chloride Complex Ions Sorption Process from Diluted Aqua Solutions Using Commercially Available Activated Carbon

Wojnicki

2017

Archives of Metallurgy and Materials

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In this paper, results of adsorption kinetic studies of Pd(II) chloride complex ions on activated carbon Organosrob 10 CO are presented. Spectorphotometrical method was applied to investigate the process. Kinetic model was proposed, and fundamental thermodynamic parameters were determined. Proposed kinetic model describes well observed phenomenon in the studied range of concentration of Pd(II) chloride complex ions as well, as concentration of activated carbon.

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Investigation of macroporous weakly basic anion exchangers applicability in palladium(II) removal from acidic solutions – batch and column studies

Cited by 38 publications

References 46 publications

Adsorption characteristics of noble metals on the strongly basic anion exchanger Purolite A-400TL

Adsorption characteristics of noble metals on the strongly basic anion exchanger Purolite A-400TL

Kinetic studies of the sorption process of Pd(II) chloride complex ions from diluted aqua solutions using commercially available activated carbon

Spectrophotometric Analysis of the Kinetic of Pd(II) Chloride Complex Ions Sorption Process from Diluted Aqua Solutions Using Commercially Available Activated Carbon

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