Fertilizer Research Institute

Puławy, Poland

Fertilizer Research Institute

Puławy, Poland

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Tyszczuk-Rotko K.,Maria Curie Sklodowska University | Maj J.,Fertilizer Research Institute
Electroanalysis | Year: 2012

For the first time an in situ plated lead film electrode was applied to adsorptive stripping voltammetry at relatively strong acidic conditions of, e.g., pH2. As an example of the application of such electrode a procedure for ultratrace W(VI) determination by adsorptive stripping voltammetry was elaborated. The procedure is based on the preconcentration of the W(VI)-Alizarin Red S complex at an in situ plated lead film electrode held at -0.575V (vs. Ag/AgCl), followed by a negatively sweeping square wave voltammetric scan. The proposed voltammetric procedure was applied to W(VI) determination in natural water samples. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Wolowicz A.,Maria Curie Sklodowska University | Hubicki Z.,Maria Curie Sklodowska University | Hubicki Z.,Fertilizer Research Institute
Chemical Engineering Journal | Year: 2012

A chelating resin of a new generation with the bis-picolylamine functional groups namely Lewatit MonoPlus TP-220 was applied in selected noble metal recovery such as palladium(II), platinum(IV), gold(III) and base metals such as Cu(II), Co(II), Ni(II) and Zn(II). Characterization of the ion exchanger including the contents of H, C and N atoms and the type of functional groups was carried out using the elementary analysis and FT-IR methods. Surface morphology (AFM and SEM pictures) of the commercially available Lewatit MonoPlus TP-220 resin was presented. Based on the batch method it was found that Lewatit MonoPlus TP-220 removed palladium(II), platinum(IV), gold(III) and cooper(II) form acidic solution very efficiently whereas zinc(II), nickel(II) and cobalt(II) to a smaller extend but the resin shows negligible higher selectivity for palladium(II) ions compared to others. The series can be presented as follows: Pd(II) > Au(III) > Pt(IV) > Cu(II) > Zn(II) > Co(II) > Ni(II). Due to this fact, the surface morphology of Lewatit MonoPlus TP-220 and the FT-IR spectrum after the Pd(II) sorption were also presented and the column studies were carried out in order to find the working ion exchange capacities for palladium(II) ions and to check how acids (nitric and hydrochloric) concentrations influence the sorption efficiency. The kinetic analysis, one of the most important factors making the metal ions removal economical and short time consuming, was discussed in this paper. © 2012 Elsevier B.V.


Wolowicz A.,Maria Curie Sklodowska University | Hubicki Z.,Maria Curie Sklodowska University | Hubicki Z.,Fertilizer Research Institute
Chemical Engineering Journal | Year: 2011

Weakly basic anion (WBA) exchange resins applicability in palladium(II) removal from the acidic solution systems was tested. Equilibrium experiments, kinetics, effects of phase contact time, acids and sodium chloride concentrations on Pd(II) sorption were studied by means of both batch and fix-bed column methods. In this paper the analysis of the data obtained for Amberlite IRA-92, Amberlite IRA-95, Amberlite IRA-96, Dowex 66, Varion ADAM and Lewatit MP-62 was discussed and compared to those obtained for Amberlyst A-23, Amberlyst A-24, Dowex WGR-2 and Amberlyst A-21. The sorption capacity as high as 121.48 mg/g for Varion ADAM was found. The sorption process of Pd(II) on the weakly basic anion exchange resins was fast and the sorption capacities were found to be influenced by the acids and sodium chloride addition. The studies of Pd(II) uptake using the fix-bed columns confirm the greater affinity of Varion ADAM for Pd(II) than of the other weakly basic anion exchangers. Kinetics of Pd(II) follows the pseudo-second order kinetic equation. © 2011 Elsevier B.V.


Wolowicz A.,Maria Curie Sklodowska University | Hubicki Z.,Maria Curie Sklodowska University | Hubicki Z.,Fertilizer Research Institute
Chemical Engineering Journal | Year: 2010

Influence of matrix and structure types of the weakly basic anion exchange resins such as Amberlyst A-23, Amberlyst A-24 and Dowex-WGR-2 onto palladium(II) sorption from the chloride and chloride-nitrate media was investigated. The addition of sodium chloride as well as the effect of acids concentration on Pd(II) sorption were taken into account. The batch and column methods were applied. Moreover, the isotherm for the most efficient resin - Amberlyst A-23 was determined. The Langmuir, Freundlich and Temkin-Pyzhev equations, which are commonly used for describing sorption equilibrium were applied in the analysis of the obtained results. The breakthrough curves of palladium(II) and the sorption parameters (distribution coefficients (Kd, K'd), ion exchange capacities (Cr, Ct), time required for the moving and formation of exchange zone (tm, tf)) were determined. In order to trace the sorption process the FT-IR spectra of the pure anion exchange resins and those loaded with palladium(II) were recorded, too. Satisfactory results were obtained for all examined resins but the largest sorption capacities were found for Amberlyst A-23 (9.99-7.61mg/g). Sodium chloride addition, high concentrations of hydrochloric and nitric acids cause reduction of equilibrium and working sorption capacity values. © 2010 Elsevier B.V.


Wolowicz A.,Maria Curie Sklodowska University | Hubicki Z.,Maria Curie Sklodowska University | Hubicki Z.,Fertilizer Research Institute
Solvent Extraction and Ion Exchange | Year: 2010

The chelating ion exchange resin - Dowex M 4195 was used in palladium(II) complexes adsorption from the acidic solutions. This study discusses the sorption kinetics, and more specifically the interparticle diffusion behavior of palladium(II) onto Dowex M 4195. The adsorption studies were used to determine the amount of palladium(II) complexes uptake (resin loading), the distribution coefficients, and the recovery efficiency of Pd(II) complexes. The influence of the agitation speed, the beads size (mean radius of swollen particles), the palladium concentrations, as well as acid concentrations (ionic strength of solutions), the macrocomponent addition (sodium chloride), and the phases contact time was also discussed. Moreover, the effect of temperature was taken into account during the determination of the isotherms. The experimental data obtained at 100 mg/cm3 Pd(II) initial concentration were applied to the kinetic models, and the sorption parameters as well as the normal standard deviation were calculated. Moreover, the Langmuir, Freundlich, and Tempkin-Pyzhev isotherm models were applied and the isotherms parameters were calculated. © Taylor & Francis Group, LLC.


Greluk M.,Maria Curie Sklodowska University | Hubicki Z.,Maria Curie Sklodowska University | Hubicki Z.,Fertilizer Research Institute
Chemical Engineering Research and Design | Year: 2013

The Amberlite IRA-900 resin was tested to remove C.I. Reactive Black 5, C.I. Reactive Red 2 and C.I. Reactive Red 120 dyes from solutions. Batch adsorption studies concerning effects of the phase contact time, pH, temperature, the presence of salts and surfactants were run. A pseudo second-order kinetic model was used to evaluate the rate constants. The Langmuir equation provided good fit for the experimental data of the equilibrium adsorption. The studies of dyes uptake using the dynamic method were run. The treatment efficiency of Amberlite IRA-900 to model wastewaters was tested. Desorption experiments by the batch method were performed. © 2013 The Institution of Chemical Engineers.


Greluk M.,Maria Curie Sklodowska University | Hubicki Z.,Maria Curie Sklodowska University | Hubicki Z.,Fertilizer Research Institute
Chemical Engineering Journal | Year: 2013

Three commercial anion exchange resins, strongly basic of type 1 (Amberlite IRA-900) and type 2 (Amberlite IRA-910) and weakly basic (Amberlyst A-21) were evaluated for the removal of anionic acid dyes, C.I. Acid Orange 7 and C.I. Acid Orange 10 from aqueous solutions. The pseudo-second order kinetic model was applied to predict the rate constant of adsorption and the equilibrium capacity as a function of initial dye concentration. Modeling of kinetic results showed that the sorption process of the dye adsorption on the anion exchangers is in the good agreement with pseudo second-order model in the entire investigated concentration domain. Also kinetic measurement showed that the process was uniform and rapid. However, C.I. Acid Orange 10 demonstrated faster binding with the anion exchangers than C.I. Acid Orange 7. On the basis of the Langmuir isotherm model analysis, the maximum adsorption capacity of anion exchangers and affinity of the dyes for resins were determined. For each acid dyes, the maximum adsorption capacity of Amberlite IRA-900 was higher than the maximum adsorption capacity of remaining anion exchangers. The dyes sorption did not change in whole pH range of 2-12 in accordance with a presupposed ion-exchange mechanism of the adsorption on strongly basic anion exchangers. On the other hand, the sorption of the dyes on the weakly basic anion exchanger also did not change with changing pH suggesting physical adsorption in the polymer network and hydrogen bonding as the predominant mechanism of the dyes on this ion exchange resin. © 2012 Elsevier B.V.


Kowalik P.,Fertilizer Research Institute | Prochniak W.,Fertilizer Research Institute | Konkol M.,Fertilizer Research Institute | Borowiecki T.,Maria Curie Sklodowska University
Applied Catalysis A: General | Year: 2012

The effects of cesium doping (in the concentration range up to 5 wt.% Cs 2O) introduced into a copper catalyst with the composition corresponding to that for the industrial catalysts used for low-temperature water-gas shift process (LT-WGS) have been investigated. Precursors and catalysts have been characterized by XRD, ICP-OS, TPD-EGA, N 2O chemisorption, TPR, N 2 physisorption and reaction rates for WGS and methanol synthesis under the pressure of 2.5 MPa have been determined. The results reveal that the cesium doping inhibits radically methanol synthesis, with the optimal Cs 2O content being <1 wt.%. © 2011 Elsevier Ltd. All rights reserved.


Wolowicz A.,Maria Curie Sklodowska University | Hubicki Z.,Maria Curie Sklodowska University | Hubicki Z.,Fertilizer Research Institute
Solvent Extraction and Ion Exchange | Year: 2014

Two polyacrylic resins of different types such as Purolite S-984 (macroporous, chelating with a polyacrylic matrix supporting functional groups of the polyamine type) and Amberlite IRA-478RF (gel, intermediate polyacrylic anion exchanger with the tertiary amine and quaternary ammonium functional groups) were applied in removal of palladium(II) metal ions from HCl and HCl - HNO3 solutions. Its sorption behaviors for base (Co(II), Ni(II), Cu(II), Ni(II)) and other noble metal (Pt(IV), Au(III)) ions, kinetics, and equilibrium studies were carried out in detail. The obtained results indicate that the resin is characterized by high sorption capacity and good kinetics of the sorption process. For the elution, the solutions of various reagents, that is, HCl, HNO3, H2SO4, NaOH, NH4OH, (NH2)2CS were studied as regards the complete release of the metal ions retained by the resin. Gold(III) could be eluted quantitatively from the loaded resin whereas Pd(II) and Pt(IV) could not by means of the applied eluting agent. © 2014 Copyright Taylor and Francis Group, LLC.


Kowalik P.,Fertilizer Research Institute | Konkol M.,Fertilizer Research Institute | Kondracka M.,Fertilizer Research Institute | Prochniak W.,Fertilizer Research Institute | And 2 more authors.
Applied Catalysis A: General | Year: 2013

The transformations of a series of complex CuZnZrAl hydroxycarbonates as copper catalyst precursors have been investigated. The materials have been prepared by the coprecipitation method and characterized by means of XRD, ICP-OES, TG-MS, TPR and N2O chemisorption. The results reveal that the Zr/Al ratio has got an influence on the formation of hydrotalcite-like phases of copper-zinc-aluminum hydroxycarbonates. The increase of ZrO 2 content results in the increase of amorphous phase content in the hydroxycarbonate precursors. Moreover, the increase of ZrO2 content causes the formation of CuO crystallites at higher temperatures during calcination. At the lower calcination temperatures (up to ca. 400°C) the incorporation of zirconium oxide results in the decrease of CuO crystallite size in the calcined mixed oxides compared to the Zr-free sample. At higher calcination temperatures a reversed effect was observed. Two different thermal decomposition pathways of the precursors with and without alumina were observed. © 2012 Elsevier B.V.

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