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Precious Metals

Synthesis and sorption performance of imidazole-based hydrogels for selective palladium recovery in green hydrometallurgical processes


  • Hughes, A. E., Haque, N., Northey, S. A. & Giddey, S. Platinum group metals: A review of resources, production and usage with a focus on catalysts. Resources 10(9), 93 (2021).

    Article 

    Google Scholar
     

  • Bi, S. & Ahmad, N. Green synthesis of palladium nanoparticles and their biomedical applications. Mater. Today Proc. 62, 3172–3177 (2022).

    Article 
    CAS 

    Google Scholar
     

  • Corti, C. W. The 23rd Santa Fe symposium on jewelry manufacturing technology. Platinum Met. Rev. 53(4), 198 (2009).

    Article 

    Google Scholar
     

  • Rakhimov, I., Vishnevskiy, A., Vladimirov, A., Saveliev, D., Puchkov, V., Salikhov, D., (eds). First finds of platinum and palladium minerals in sulfide ores of the Khudolaz intrusive complex (Southern Urals). Doklady Earth Sciences. Springer (2018).

  • Song, H., He, M., Zhang, S. & Yi, F. Chemical composition of the ore and occurrence state of the elements in Jingbaoshan platinum-palladium deposit. Chin. J. Geochem. 27(1), 104–108 (2008).

    Article 
    CAS 

    Google Scholar
     

  • Chen, C. Y., Wen, S. M., Feng, Q. C. & Zhao, H. F. Comprehensive utilization status of low grade and refractory platinum-palladium ores from Jinbaoshan of Yunnan. Adv. Mater. Res. 807, 2309–2316 (2013).

    Article 

    Google Scholar
     

  • Dreisinger, D. Keynote address: Hydrometallurgical process development for complex ores and concentrates. J. South. Afr. Inst. Min. Metall. 109(5), 253–271 (2009).

    CAS 

    Google Scholar
     

  • Rudashevsky, N., Rudashevsky, V. & Nielsen, T. JGo. O. D. Intermetallic compounds, copper and palladium alloys in Au–Pd ore of the Skaergaard pluton, Greenland. Geol. Ore Depos. 57(8), 674–690 (2015).

    Article 
    ADS 

    Google Scholar
     

  • Foltyn, K., Pieczonka, J., Piestrzyński, A. & Synowiec, P. Metale szlachetne w złożu Morrison, Sudbury, Kanada. Biuletyn Państwowego Instytutu Geologicznego 469, 251–264 (2017).


    Google Scholar
     

  • Helmy, H. M. et al. How Pt and Pd are hosted in magmatic sulfides, substitutions and/or inclusions?. Contrib. Mineral. Petrol. 178(7), 41 (2023).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Spiridonov, E., Belyakov, S., Ivanova, Y. A., Egorov, K. & Naumov, D. JGo. O. D. Platinoan vysotskite with inverse zoning and skeletal cooperite in metamorphosed sulfide ores within the eastern flank of the Oktyabrskoe deposit, Noril’sk ore field. Geol. Ore Depos. 63(8), 842–849 (2021).

    Article 
    ADS 

    Google Scholar
     

  • Jha, M. K. et al. Hydrometallurgical recovery/recycling of platinum by the leaching of spent catalysts: A review. Hydrometallurgy 133, 23–32 (2013).

    Article 
    CAS 

    Google Scholar
     

  • Antolini, E. Palladium in fuel cell catalysis. Energy Environ. Sci. 2(9), 915–931 (2009).

    Article 
    CAS 

    Google Scholar
     

  • Hammadi, M. Q., Yassen, R. S. & Abid, K. N. Recovery of platinum and palladium from scrap automotive catalytic converters. Al-Khwarizmi Eng. J. 13(3), 131–141 (2017).

    Article 

    Google Scholar
     

  • Michałek, T., Hessel, V. & Wojnicki, M. Production, recycling and economy of palladium: A critical review. Materials 17(1), 45 (2023).

    Article 
    ADS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Paiva, A. P. Recycling of palladium from spent catalysts using solvent extraction—Some critical points. Metals 7(11), 505 (2017).

    Article 

    Google Scholar
     

  • Tran, T. T., Song, S. G., Nguyen, T. N. H. & Lee, M. S. Separation of palladium (II) and platinum (IV) from hydrochloric acid solutions by selective precipitation using dimethylglyoxime. Hydrometallurgy 242, 106708 (2026).

    Article 
    CAS 

    Google Scholar
     

  • Sayar, M. & Canpolat, M. Novel poly (N‐(1‐cyclohexylethyl) acrylamide‐co‐styrene‐co‐ethyleneglycol dimethacrylate) synthesis for efficient methylene blue adsorption from aqueous solutions synthesis. ChemistrySelect 9(43), e202400947 (2024).

    Article 
    CAS 

    Google Scholar
     

  • Canpolat, M. & Topal, G. Synthesis, characterization of cross‐linked poly (ethylene glycol dimethacrylate‐methyl methacrylate‐N‐(1‐phenylethyl) acrylamide) copolymer and removal of copper (II), cobalt (II) ions from aqueous solutions via this copolymer. Environ. Prog. Sustain. Energy 42(6), e14197 (2023).

    Article 
    CAS 

    Google Scholar
     

  • Canpolat, M. & Altunkaynak, Y. Isotherm, kinetic, and thermodynamic studies of adsorption of copper (II) and nickel (II) ions using low‐cost treated orange peel from aqueous solutions. Environ. Prog. Sustain. Energy 44(1), e14509 (2025).

    Article 
    CAS 

    Google Scholar
     

  • Bertagnolli, C., Grishin, A., Vincent, T. & Guibal, E. Boron removal by a composite sorbent: Polyethylenimine/tannic acid derivative immobilized in alginate hydrogel beads. J. Environ. Sci. Health A 52(4), 359–367 (2017).

    Article 
    CAS 

    Google Scholar
     

  • Wang, S., Vincent, T., Roux, J. C., Faur, C. & Guibal, E. Innovative conditioning of algal-based sorbents: Macro-porous discs for palladium sorption. Chem. Eng. J. 325, 521–532 (2017).

    Article 
    CAS 

    Google Scholar
     

  • Baran, N. Y., Baran, T., Menteş, A., Karakışla, M. & Saçak, M. Highly effective and recoverable Pd (II) catalyst immobilized on thermally stable Schiff base polymer containing phenol group: Production, characterization and application in Suzuki coupling reactions. J. Organomet. Chem. 866, 87–94 (2018).

    Article 

    Google Scholar
     

  • Parodi, A., Vincent, T., Pilsniak, M., Trochimczuk, A. W. & Guibal, E. Palladium and platinum binding on an imidazol containing resin. Hydrometallurgy 92(1–2), 1–10 (2008).

    Article 
    CAS 

    Google Scholar
     

  • Gong, Y. et al. Compatible with excellent gold/palladium trap and open sites for green Suzuki coupling by an imidazole-modified MOF. Microporous Mesoporous Mater. 337, 111877 (2022).

    Article 
    CAS 

    Google Scholar
     

  • Khare, S., Kumar, S., Urmaliya, P. & Yadav, S. Recent advancement and applications of green hydrogels: Revolutionizing biomedicine and environmental sustainability. Results Chem. 18, 102857 (2025).

    Article 
    CAS 

    Google Scholar
     

  • Badawy, S. S., Abdel-Salam, F. H., Maziad, N. A., Mahmoud, F. Z. & Gayed, H. M. Radiation-assisted synthesis of hydroxyethyl cellulose and acrylic acid hydrogel modified with novel surfactants for Pb (II) removal. Int. J. Environ. Anal. Chem. 105(19), 7838–7861 (2025).

    Article 
    CAS 

    Google Scholar
     

  • Dwamena, A. K. Recent advances in hydrophobic deep eutectic solvents for extraction. Separations 6(1), 9 (2019).

    Article 
    CAS 

    Google Scholar
     

  • Wongsawa, T., Traiwongsa, N., Pancharoen, U. & Nootong, K. A review of the recovery of precious metals using ionic liquid extractants in hydrometallurgical processes. Hydrometallurgy 198, 105488 (2020).

    Article 
    CAS 

    Google Scholar
     

  • Nakao, Y. One-step syntheses of polyhalogenometal complexes by direct dissolution of the metals in halogen-halide-acetonitrile systems. Chem. Lett. 28(5), 433–434 (1999).

    Article 

    Google Scholar
     

  • Moustafa, A. A., Ashmawy, A. M., Ghayad, I. M., El-Zomrawy, A. A. & Abdelbasir, S. M. Novel imidazole-based, ionic liquid: Synthetics linked to enhancing the life cycle of lead-acid batteries. J. Energy Storage 56, 105932 (2022).

    Article 

    Google Scholar
     

  • Nikoloski, A. N., Ang, K. L. & Li, D. Recovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins. Hydrometallurgy 152, 20–32 (2015).

    Article 
    CAS 

    Google Scholar
     

  • Masry, B. & Rizk, S. Styrene divinyl benzene beads (SM-2) functionalized with triisobutylphosphine sulfide for selective uptake of palladium (II) from nitric acid medium. J. Dispers. Sci. Technol. 47(4), 738–749 (2026).

    Article 
    CAS 

    Google Scholar
     

  • Kassem, A. et al. Extraction of palladium from nitrate medium by emulsion liquid membrane containing CYANEX 471X as carrier. Solvent Extr. Ion Exch. 35(2), 145–160 (2017).

    Article 
    CAS 

    Google Scholar
     

  • Fontàs, C., Anticó, E., Vocanson, F., Lamartine, R. & Seta, P. Efficient thiacalix [4] arenes for the extraction and separation of Au (III), Pd (II) and Pt (IV) metal ions from acidic media incorporated in membranes and solid phases. Sep. Purif. Technol. 54(3), 322–328 (2007).

    Article 

    Google Scholar
     

  • Matsumoto, K., Sezaki, Y., Hata, Y. & Jikei, M. Selective recovery of platinum (IV) from HCl solutions using 2-ethylhexylamine as a precipitant. Separations 8(4), 40 (2021).

    Article 
    CAS 

    Google Scholar
     

  • Li, X. & Binnemans, K. J. C. R. Oxidative dissolution of metals in organic solvents. Chem. Rev. 121(8), 4506–4530 (2021).

    Article 
    CAS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Naini, N., Kalal, H. S., Almasian, M. R., Niknafs, D., Taghiof, M., & Hoveidi, H. A new adsorbent for Pd (II) ions from aqueous solutions using diphenylphosphine with magnetic properties (2022).

  • Seabi, M. J. et al. Benzimidazole based zeolitic imidazolate framework as an efficient adsorbent for palladium recovery from wastewater. J. Environ. Chem. Eng. 14(2), 121696 (2026).

    Article 

    Google Scholar
     

  • Masry, B. A., Elhady, M. A. & Mousaa, I. M. Fabrication of a novel polyvinylpyrrolidone/abietic acid hydrogel by gamma irradiation for the recovery of Zn, Co, Mn and Ni from aqueous acidic solution. Inorg. Nano-Met. Chem. 53(3), 283–294 (2023).

    Article 
    CAS 

    Google Scholar
     

  • Yamada, M. et al. Recovery of Pd (II) from leach solutions of automotive catalysts by solvent extraction with new thiophosphate extractants. Hydrometallurgy 191, 105221 (2020).

    Article 
    CAS 

    Google Scholar
     

  • Rzelewska-Piekut, M., Paukszta, D., & Regel-Rosocka, M. Hydrometallurgical recovery of platinum group metals from spent automotive converters. Physicochem. Probl. Min. Process. 57. (2021).

  • Godlewska-Żyłkiewicz, B., Sawicka, S. & Karpińska, J. Removal of platinum and palladium from wastewater by means of biosorption on fungi Aspergillus sp. and yeast Saccharomyces sp. Water 11(7), 1522 (2019).

    Article 

    Google Scholar
     

  • Khalil, M., Madbouly, H. A., Elgoud, E. A. & Ali, I. M. Removal of Ce (IV) and Nd (III) from acidic solution using polyacrylonitrile-encapsulated lithium titanium vanadate as an efficient adsorbent. J. Inorg. Organomet. Polym. Mater. 32(4), 1370–1380 (2022).

    Article 
    CAS 

    Google Scholar
     

  • Murad, G. A., Dakroury, G. A. & Abu Elgoud, E. M. Exploiting carboxymethyl cellulose-starch/alumina nano gel to eliminate Fe (III) from ore leachates of rare earth elements. Cellulose 31(2), 969–992 (2024).

    Article 
    CAS 

    Google Scholar
     

  • Netzahuatl-Muñoz, A. R., Cristiani-Urbina, M. D. C. & Cristiani-Urbina, E. Chromium biosorption from Cr (VI) aqueous solutions by Cupressus lusitanica bark: Kinetics, equilibrium and thermodynamic studies. PLoS ONE 10(9), e0137086 (2015).

    Article 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Hubicki, Z. & Wołowicz, A. Adsorption of palladium (II) from chloride solutions on Amberlyst A 29 and Amberlyst A 21 resins. Hydrometallurgy 96(1–2), 159–165 (2009).

    Article 
    CAS 

    Google Scholar
     

  • Abu Elgoud, E. M., Aly, M. I., Hamed, M. M. & Nayl, A. A. NanoTafla nanocomposite as a novel low-cost and eco-friendly sorbent for strontium and europium ions. ACS Omega 7(12), 10447–10457 (2022).

    Article 
    CAS 
    PubMed 
    PubMed Central 

    Google Scholar
     

  • Ismail, Z. H., Rizk, S. E., Elgoud, E. A. & Aly, H. F. Separation of hafnium from zircon leach solution using anion-exchange resin and production of high-purity zirconia for nuclear applications. Hydrometallurgy 231, 106411 (2025).

    Article 
    CAS 

    Google Scholar
     

  • Canpolat, M. & Altunkaynak, Y. Swift adsorption of mercury (II) and industrial anionic dye contaminants from aqueous solutions utilizing raw potato peels: Performance, isotherm, kinetic, and thermodynamic assessment. Ionics 31(11), 12441–12459 (2025).

    Article 
    CAS 

    Google Scholar
     

  • Sabermahani, F. & Taher, M. A. Flame atomic absorption determination of palladium after separation and preconcentration using polyethyleneimine water-soluble polymer/alumina as a new sorbent. J. Anal. Atom. Spectrometry 25(7), 1102–1106 (2010).

    Article 
    CAS 

    Google Scholar
     

  • Sabermahani, F., Saeidi, M. & Sharifzade, V. Removal of nickel (II) and palladium (II) from surface waters. Bull. Chem. Soc. Ethiop. 27(1), 15–23 (2013).

    CAS 

    Google Scholar
     

  • Uheida, A. et al. Sorption of palladium (II), rhodium (III), and platinum (IV) on Fe3O4 nanoparticles. J. Colloid Interface Sci. 301(2), 402–408 (2006).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Wasikiewicz, J. M., Mitomo, H., Seko, N., Tamada, M. & Yoshii, F. Platinum and palladium ions adsorption at the trace amounts by radiation crosslinked carboxymethylchitin and carboxymethylchitosan hydrogels. J. Appl. Polym. Sci. 104(6), 4015–4023 (2007).

    Article 
    CAS 

    Google Scholar
     

  • Wołowicz, A. & Hubicki, Z. J. Comparison of strongly basic anion exchange resins applicability for the removal of palladium (II) ions from acidic solutions. Chem. Eng. J. 171(1), 206–215 (2011).

    Article 

    Google Scholar
     



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