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

IF 0.3 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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在氯化物熔体中原位合成分层结构碳膜去除工业废水中的Cu2+和Ni2+离子

研究了在氯化镁熔体表面合成的分层结构碳膜（HSCFs）对中性介质中0.1 M镍和硫酸铜溶液中镍和铜离子的去除作用，温度范围为20 ~ 80℃。将HSCFs在硫酸镍和硫酸铜溶液中的保温温度提高到80℃，可使溶液中镍和铜的提取率提高3-3.5倍。采用扫描电子显微镜、电子探针显微分析、x射线光电子能谱和拉曼光谱等方法研究了在镍盐和铜盐溶液中保存HSCFs的产物。铜被HSCF表面吸附，不会以稳定的二价铜离子水化配合物的形式形成固体相互作用产物，并且在硫酸镍溶液中保持HSCF会导致HSCF表面形成精细的氢氧化镍晶体。HSCF可作为一种有效的碳过滤器，用于净化中性介质中含二价镍和铜离子的工业废水。

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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.