Abstract
Two chitosan hydrogels (prepared by NaOH neutralization and by polyphosphate ionotropic gelation) have been tested in the dry state for Pd(II) and Pt(IV) sorption at pH 2. Similar sorption isotherms with maximum sorption capacities close to 190 mg Pd g−1 and 235 mg Pt g−1 were achieved. The sorption mechanism involves electrostatic attraction of the chloro-anionic species onto protonated amine groups; the drastic decrease of sorption capacity with the addition of chloride ions supports this hypothesis. SEM-EDAX analysis suggests that sorption proceeds, in kinetic terms, through a shrinking core mechanism. Metal ions can diffuse throughout all the sorbent volume. The main differences between the sorbents are revealed by kinetics. The hydrogels prepared by ionotropic gelation in polyphosphate (C-PPh) allows reaching equilibrium much faster than the hydrogels prepared by the neutralization process (C-NaOH). While for C-PPh sorbent the chemical reaction rate seems to control sorption profiles, in the case of C-NaOH a combination of mechanisms including intraparticle diffusion resistance controls uptake kinetics. Metal desorption from loaded sorbents is possible using thiourea alone or in association with HCl solutions. The recycling of the sorbents is possible but for a limited number of cycles.
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References
Chassary, P., Vincent, T., Sanchez-Marcano, J., Macaskie, L., Guibal, E.: Palladium and platinum recovery from bi-component mixtures using chitosan derivatives. Hydrometallurgy 76, 131–147 (2005)
Crank, J.: The Mathematics of Diffusion. Oxford University Press, Oxford (1975)
Gibbs, G., Tobin, J.M., Guibal, E.: Sorption of Acid Green 25 on chitosan: Influence of experimental parameters on uptake kinetics and sorption isotherms. J. Appl. Polym. Sci. 90, 1073–1080 (2003)
Guibal, E.: Interactions of metal ions with chitosan-based sorbents: a review. Sep. Purif. Technol. 38, 43–74 (2004)
Guibal, E., Jansson-Charrier, M., Saucedo, I., Lecloirec, P.: Enhancement of metal ion sorption performances of chitosan—effect of the structure on the diffusion properties. Langmuir 11, 591–598 (1995)
Guibal, E., Milot, C., Tobin, J.M.: Metal-anion sorption by chitosan beads: Equilibrium and kinetic studies. Ind. Eng. Chem. Res. 37, 1454–1463 (1998)
Guibal, E., Larkin, A., Vincent, T., Tobin, J.M.: Chitosan sorbents for platinum sorption from dilute solutions. Ind. Eng. Chem. Res. 38, 4011–4022 (1999a)
Guibal, E., Milot, C., Roussy, J.: Molybdate sorption by cross-linked chitosan beads: Dynamic studies. Water Environ. Res. 71, 10–17 (1999b)
Guibal, E., Sweeney, N.V., Zikan, M.C., Vincent, T., Tobin, J.M.: Competitive sorption of platinum and palladium on chitosan derivatives. Int. J. Biol. Macromol. 28, 401–408 (2001)
Gupta, K.C., Jabrail, F.H.: Controlled-release formulations for hydroxy urea and rifampicin using polyphosphate-anion-crosslinked chitosan microspheres. J. Appl. Polym. Sci. 104, 1942–1956 (2007)
Hsieh, F.M., Huang, C., Lin, T.F., Chen, Y.M., Lin, J.C.: Study of sodium tripolyphosphate-crosslinked chitosan beads entrapped with Pseudomonas putida for phenol degradation. Process Biochem. 43, 83–92 (2008)
Juang, R.-S., Ju, C.-Y.: Kinetics of sorption of Cu(II)-ethylenediaminetetraacetic acid chelated anions onto cross-linked, polyaminated chitosan beads. Ind. Eng. Chem. Res. 37, 3463–3469 (1998)
Lee, S.T., Mi, F.L., Shen, Y.J., Shyu, S.S.: Equilibrium and kinetic studies of copper(II) ion uptake by chitosan-tripolyphosphate chelating resin. Polymer 42, 1879–1892 (2001)
Mi, F.L., Shyu, S.S., Wong, T.B., Jang, S.F., Lee, S.T., Lu, K.T.: Chitosan-polyelectrolyte complexation for the preparation of gel beads and controlled release of anticancer drug. II. Effect of pH-dependent ionic crosslinking or interpolymer complex using tripolyphosphate or polyphosphate as reagent. J. Appl. Polym. Sci. 74, 1093–1107 (1999)
Mi, F.L., Shyu, S.S., Chen, C.T., Lai, J.Y.: Adsorption of indomethacin onto chemically modified chitosan beads. Polymer 43, 757–765 (2002)
Parodi, A., Vincent, T., Pilsniak, M., Trochimczuk, A.W., Guibal, E.: Palladium and platinum binding on an imidazol containing resin. Hydrometallurgy 92, 1–10 (2008)
Peirano, F., Vincent, T., Guibal, E.: Diffusion of biological molecules through hollow chitosan fibers. J. Appl. Polym. Sci. 107, 3568–3578 (2008)
Puigdomenech, I.: MEDUSA (Make equilibrium diagrams using sophisticated algorithms), v. 3.1. Royal Institute of Technology, Stockholm, Sweden (2002). http://www.kemi.kth.se/medusa
Qi, L.F., Xu, Z.R.: Lead sorption from aqueous solutions on chitosan nanoparticles. Colloid Surf. A, Physicochem. Eng. Asp. 251, 183–190 (2004)
Roberts, G.A.F.: Chitin Chemistry. Macmillan, London (1992)
Ruiz, M., Sastre, A.M., Guibal, E.: Palladium sorption on glutaraldehyde-crosslinked chitosan. React. Funct. Polym. 45, 155–173 (2000)
Ruiz, M., Sastre, A.M., Zikan, M.C., Guibal, E.: Palladium sorption on glutaraldehyde-crosslinked chitosan in fixed-bed systems. J. Appl. Polym. Sci. 81, 153–165 (2001)
Ruiz, M., Sastre, A., Guibal, E.: Pd and Pt recovery using chitosan gel beads. I. Influence of the drying process on diffusion properties. Sep. Sci. Technol. 37, 2143–2166 (2002a)
Ruiz, M., Sastre, A., Guibal, E.: Pd and Pt recovery using chitosan gel beads. II. Influence of chemical modifications on sorption properties. Sep. Sci. Technol. 37, 2385–2403 (2002b)
Shu, X.Z., Zhu, K.J.: Controlled drug release properties of ionically cross-linked chitosan beads: the influence of anion structure. Int. J. Pharm. 233, 217–225 (2002)
Valentin, R., Molvinger, K., Quignard, F., Brunel, D.: Supercritical CO2 dried chitosan: an efficient intrinsic heterogeneous catalyst in fine chemistry. New J. Chem. 27, 1690–1692 (2003)
Valentin, R., Bonelli, B., Garrone, E., Di Renzo, F., Quignard, F.: Accessibility of the functional groups of chitosan aerogel probed by FT-IR-monitored deuteration. Biomacromolecules 8, 3646–3650 (2007)
Vieira, R.S., Guibal, E., Silva, E.A., Beppu, M.M.: Adsorption and desorption of binary mixtures of copper and mercury ions on natural and crosslinked chitosan membranes. Adsorption 13, 603–611 (2007)
Vincent, T., Guibal, E.: Non-dispersive liquid extraction of Cr(VI) by TBP/Aliquat 336 using chitosan-made hollow fiber. Solv. Extr. Ion Exch. 18, 1241–1260 (2000)
Vincent, T., Parodi, A., Guibal, E.: Immobilization of Cyphos IL-101 in biopolymer capsules for the synthesis of Pd sorbents. React. Funct. Polym. 68, 1159–1169 (2008a)
Vincent, T., Parodi, A., Guibal, E.: Pt recovery using Cyphos IL-101 immobilized in biopolymer capsules. Sep. Purif. Technol. 62, 470–479 (2008b)
Wong, Y.C., Szeto, Y.S., Cheung, W.H., McKay, G.: Effect of temperature, particle size and percentage deacetylation on the adsorption of acid dyes on chitosan. Adsorption 14, 11–20 (2008)
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Sicupira, D., Campos, K., Vincent, T. et al. Palladium and platinum sorption using chitosan-based hydrogels. Adsorption 16, 127–139 (2010). https://doi.org/10.1007/s10450-010-9210-9
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DOI: https://doi.org/10.1007/s10450-010-9210-9