2023
DOI: 10.1007/s10008-023-05745-x
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Selective electrochemical reduction of mercury(II) from a simulated traditional gold mining wastewater contaminated with cyanide and heavy metals

Leidy M. Tami-Pimiento,
Laura M. Joya-Herrera,
Yolanda Isabel Pérez-Chía
et al.

Abstract: In traditional gold mining (TGM), the wastewater discharges are contaminated with high concentrations of cyanide and heavy metals. Understanding the effects of different cyanide species on the electrochemical behavior of mercury(II) is critical for its removal from TGM wastewater. Herein, we evaluated mercury electroreduction using a model solution simulating a TGM wastewater containing Fe(II), Cu(I), Zn(II), Hg(II), and CN– ions. According to speciation diagrams, the predominant Hg(II) species is Hg(CN)42–. C… Show more

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“…The main sources of mercury pollution are coal burning, non-ferrous metals, chlor-alkali production, and polyvinyl chloride manufacturing [1][2][3]. Reducing emission concentrations is the most effective means to control mercury pollution [4][5][6][7][8]. Membrane adsorption has emerged as a promising water treatment method in the field of environmental engineering owing to its easy recovery, simple operation, convenient post-treatment, and potential for repeated use compared to traditional powder adsorption methods [9][10][11][12][13].…”
Section: Introductionmentioning
confidence: 99%
“…The main sources of mercury pollution are coal burning, non-ferrous metals, chlor-alkali production, and polyvinyl chloride manufacturing [1][2][3]. Reducing emission concentrations is the most effective means to control mercury pollution [4][5][6][7][8]. Membrane adsorption has emerged as a promising water treatment method in the field of environmental engineering owing to its easy recovery, simple operation, convenient post-treatment, and potential for repeated use compared to traditional powder adsorption methods [9][10][11][12][13].…”
Section: Introductionmentioning
confidence: 99%