Synthesis and solubility of hopeite Zn3(PO4)2·4H2O

• Autorzy: Bajda Tomasz , Rogowska Melania , Pawłowska Agnieszka

Identyfikatory

DOI

10.2478/mipo-2023-0008

• Języki publikacji: EN

Abstrakty

EN

Minerals from the phosphate groups are used in environmental engineering as thermodynamically stable vehicles for heavy metals such as zinc. The hopeite Zn3(PO4)2·4H2O was synthesized and characterized by X-ray diffraction and scanning electron microscopy. The solubility of the hopeite was measured at 25°C. The average solubility product, log Ksp, for the reaction Zn3(PO4)2·4H2O ⇔ 3Zn2+ + 2PO4 3− + 4H2O at 25°C is –35.72 ± 0.03. The free energy of formation, ΔG°f ,298, calculated from this measured solubility product is –3597.4 ± 1.0 kJ mol−1. The immobilization of zinc in the hopeite structure offers the possibility of developing an effective method for removing Zn from wastewater, water and soils.

Słowa kluczowe

EN

zinc; phosphate; apatite; dissolution; solubility product

• Wydawca: Mineralogical Society of Poland
• Czasopismo: Mineralogia
• Rocznik: 2023
• Tom: Vol. 54, iss. 1
• Strony: 78--81
• Opis fizyczny: Bibliogr. [9] poz., rys., wykr.

Twórcy

autor

Bajda Tomasz

• AGH University of Krakow, Faculty of Geology, Geophysics and Environment Protection, al. Mickiewicza 30, 30–059 Krakow, Poland

• https://orcid.org/0000-0003-3849-5558

autor

Rogowska Melania

• AGH University of Krakow, Faculty of Geology, Geophysics and Environment Protection, al. Mickiewicza 30, 30–059 Krakow, Poland

autor

Pawłowska Agnieszka

• AGH University of Krakow, Faculty of Geology, Geophysics and Environment Protection, al. Mickiewicza 30, 30–059 Krakow, Poland

Bibliografia

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