Electrochemical behavior of pyrite in sulfuric acid in presence of amino acids belonging to the amino acid sequence of rusticyanin

Maluckov, Biljana S.; Mitrić, Miodrag

doi:10.1016/j.bioelechem.2018.04.021

Cited by 11 publications

(2 citation statements)

References 47 publications

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“…Meanwhile, sulfur in copper tailings also affected the grade of valuable metals extracted from copper tailings [5]. Additionally, it was possible for sulfur as a resource to be collected to make sulfuric acid which was the important application of sulfur [6,7]. erefore, it was necessary to release and recover sulfur from copper tailings.…”

Section: Introductionmentioning

confidence: 99%

Innovative Methodology for Sulfur Release from Copper Tailings by the Oxidation Roasting Process

Luo

Peng

Sun

2020

Journal of Chemistry

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To effectively prevent the accumulation of copper tailings from producing acid mine drainage (AMD) and maximize the comprehensive utilization of copper tailings, the process of oxidation roasting was adopted to release sulfur in the form of SO2 to achieve the purpose of sulfur recovery later. Based on the AMD risk assessment, thermogravimetric (TG) analysis, and differential scanning calorimeter (DSC) analysis, the influences of roasting temperature, residence time, and air flow in the roasting process were investigated. The thermal stability, reaction equilibrium, mineral transformation, and residual S content were characterized by TG-DSC, HSC chemical software 6.0, X-ray diffraction (XRD), and combustion neutralization, respectively. The optimum conditions for sulfur release in the roasting process were shown with a temperature of 1200°C, a residence time of 60 min, and an air flow of 0.8 L/min. Under these conditions, the sulfur release rate was 99.82%, and the residual S content was 0.05%. Subsequently, the process of sulfur release was proposed as four steps: oxidative decomposition of pyrrhotite, formation of ferric sulfate, decomposition of ferric sulfate, and formation of hematite. All of the findings could propose a theoretical and experimental reference for the recovery of the sulfur component from tailings rich in sulfide minerals.

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Section: Introductionmentioning

confidence: 99%

Innovative Methodology for Sulfur Release from Copper Tailings by the Oxidation Roasting Process

Luo

Peng

Sun

2020

Journal of Chemistry

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“…[6] Therefore, amino acids with carboxyl groups, amine groups, heteroatoms, and hydrocarbon chains should be able to provide great inhibition performance. [7] Moreover, amino acids have been used to protect various metals because they are environment-friendly, cost-effective, naturally available, and water-soluble. [8][9][10] Among them, extra N-containing amino acids L-Lysine (Lys) and L-Arginine (Arg) have been introduced in many studies of metal corrosion inhibition.…”

Section: Introductionmentioning

confidence: 99%

Corrosion inhibition of amino acids for 316L stainless steel and synergistic effect of I⁻ ions: Experimental and theoretical studies

Zhao

Qian

Niu

2021

Materials & Corrosion

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The inhibition effect of amino acids L-lysine (Lys) and L-arginine (Arg), which serve as inhibition films for corrosion of 316L stainless steel in 0.5 M NaCl solution, is studied by electrochemical measurements. The adsorption of the inhibitor molecules on the steel surface is studied by Fourier transformed infrared spectroscopy (FTIR) and surface-enhanced Raman spectroscopy (SERS), accompanied by the characterization of the metal surface by scanning electron microscopy (SEM). All in all, Lys or Arg can obviously restrain the corrosion of 316L steel, while the inhibition efficiency is even higher with the assistance of I − ions. Arg always has better inhibition performance than Lys regardless of the addition of I − ions. FTIR and SERS confirm the adsorption of amino acids on the metal surface; at the same time, the morphology and protection effect of the inhibition films is clearly illustrated via SEM images. Thanks to all experimental measurements as mentioned above and theoretical calculations, a mechanism model is proposed to simulate the corrosion inhibition process of amino acids and the synergistic effect of I − ions on 316L steel.

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Biorecovery of nanogold and nanogold compounds from gold-containing ores and industrial wastes

Maluckov

2021

Appl Microbiol Biotechnol

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Electrochemical behavior of pyrite in sulfuric acid in presence of amino acids belonging to the amino acid sequence of rusticyanin

Cited by 11 publications

References 47 publications

Innovative Methodology for Sulfur Release from Copper Tailings by the Oxidation Roasting Process

Innovative Methodology for Sulfur Release from Copper Tailings by the Oxidation Roasting Process

Corrosion inhibition of amino acids for 316L stainless steel and synergistic effect of I⁻ ions: Experimental and theoretical studies

Biorecovery of nanogold and nanogold compounds from gold-containing ores and industrial wastes

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Electrochemical behavior of pyrite in sulfuric acid in presence of amino acids belonging to the amino acid sequence of rusticyanin

Cited by 11 publications

References 47 publications

Innovative Methodology for Sulfur Release from Copper Tailings by the Oxidation Roasting Process

Innovative Methodology for Sulfur Release from Copper Tailings by the Oxidation Roasting Process

Corrosion inhibition of amino acids for 316L stainless steel and synergistic effect of I− ions: Experimental and theoretical studies

Biorecovery of nanogold and nanogold compounds from gold-containing ores and industrial wastes

Contact Info

Product

Resources

About

Corrosion inhibition of amino acids for 316L stainless steel and synergistic effect of I⁻ ions: Experimental and theoretical studies