Kinetic aspects of malachite deposition on marble from copper lactate solutions
Gogol D.B. Rozhkovoy I.E. Sadyrbekov D.T. Aldabergenova S.K. Makasheva A.M.
2023Academie des sciences
Comptes Rendus Chimie
2023#2629 - 36 pp.
Experiments were conducted to study the formation of copper minerals on carbonate material (marble) from lactate solutions. Main kinetic parameters were estimated from the curves of copper ions deposition. The reaction rate constant is 4.19 × 10−6 s−1 and the effective diffusion coefficient is 1.39 × 10−12 m2/s at room temperature (25 °C). IR spectra of sediments show good agreement with natural samples of malachite and azurite (Spassk deposit, Central Kazakhstan). The results show the possibility of using organic complexing agents for intensifying the processes of secondary mineral formation of copper carbonate minerals (malachite and azurite) to prevent the dissipation of heavy metal ions in soluble forms from poor deposits and dumps during their remediation.
Azurite , Basic copper carbonates , Heavy metal ions , Infrared spectra , Secondary mineral formation , Spassk deposit
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Institute of Problems of Complex Development of Mineral Resources, Ippodromnaya Str. 5, Karaganda, 100019, Kazakhstan
Chemistry Department, Buketov Karaganda University, Universitetskaya Str. 28, Karaganda, 100026, Kazakhstan
Institute of Problems of Complex Development of Mineral Resources
Chemistry Department
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