Removal of Cu2+ and Ni2+ Ions from Industrial Wastewater Using a Hierarchically Structured Carbon Film Synthesized In Situ in a Chloride Melt

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING Russian Metallurgy (Metally) Pub Date : 2025-01-23 DOI:10.1134/S0036029524701945

L. A. Elshina, V. A. Dorogova, V. I. Pryakhina

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Abstract

The removal of nickel and copper ions from 0.1 M nickel and copper sulfate solutions in a neutral medium in the temperature range 20–80°C by hierarchically structured carbon films (HSCFs) synthesized on the surface of molten magnesium in a chloride melt is investigated. An increase in the holding temperature of HSCFs in nickel and copper sulfate solutions to 80°C is shown to increase in the extraction of nickel and copper from solutions by 3–3.5 times. The products of holding HSCFs in nickel and copper salt solutions are studied by scanning electron microscopy, electron probe microanalysis, X-ray photoelectron spectroscopy, and Raman spectroscopy. Copper is shown to be adsorbed by the HSCF surface without the formation of solid interaction products in the form of stable aquacomplexes of divalent copper ions, and holding of HSCF in a nickel sulfate solution leads to the formation of fine nickel hydroxide crystals on the HSCF surface. HSCF can be recommended as an effective carbon filter for purification of industrial wastewater from divalent nickel and copper ions in a neutral medium.

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来源期刊

Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

0.70

自引率

25.00%

发文量

140

期刊介绍： Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.