An electrochemical method to investigate the effects of compound composition on gold dissolution in thiosulfate solution

被引：4
|
作者：
Zhang, Zhaohui [2 ]
Liu, Bailong [1 ]
Wu, Mei [2 ]
Sun, Longxin [2 ]
机构：
[1] Xian Univ Architecture & Technol, Sch Chem & Chem Engn, Xian 710055, Peoples R China
[2] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Peoples R China
来源：
GREEN PROCESSING AND SYNTHESIS | 2020年 / 9卷 / 01期
关键词：
thiosulfate; anodic dissolution; Tafel polarization curve; electrochemical behavior; AMMONIACAL THIOSULFATE; CYANIDE SOLUTIONS; COPPER; SILVER; RECOVERY;
D O I：
10.1515/gps-2020-0033
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The electrochemical behavior of gold dissolution in the Cu2+-NH3-S2O32--EDTA solution has been investigated in detail by deriving and analyzing the Tafel polarization curve, as this method is currently widely implemented for the electrode corrosion analysis. The dissolution rate of gold in Cu2+-NH3-S2O32--EDTA solution was determined based on the Tafel polarization curves, and the effects of various compound compositions in a Cu2+-NH3-S2O32--EDTA mixture on the corrosion potential and corrosion current density were analyzed. The results showed that the corrosion potential and polarization resistance decreased, whereas the corrosion current density increased for certain concentrations of S2O32--NH3-Cu2+ and EDTA, indicating that the dissolution rate of gold had changed. The reason for promoting the dissolution of gold is also discussed.
引用
收藏
页码：496 / 502
页数：7
相关论文
共 50 条
  • [1] An Electrochemical Study of Gold Dissolution in Thiosulfate Solution with Cobalt-Ammonia Catalysis
    Li, Ke
    Li, Qian
    Xu, Bin
    Yang, Yongbin
    Jiang, Tao
    [J]. METALS, 2022, 12 (02)
  • [2] DISSOLUTION OF GOLD IN AMMONIACAL SODIUM THIOSULFATE SOLUTION
    TOZAWA, K
    INUI, Y
    UMETSU, Y
    [J]. JOURNAL OF METALS, 1980, 32 (12): : 85 - 85
  • [3] ELECTROCHEMICAL STUDIES ON THE MECHANISM OF GOLD DISSOLUTION IN THIOSULFATE SOLUTIONS
    Zhu
    Fang
    Chen
    [J]. Transactions of Nonferrous Metals Society of China, 1994, (01) : 50 - 53+58
  • [4] Effect of thiosulfate on the anodic dissolution of gold in iodide solution
    Wang, XP
    Issaev, N
    Osteryoung, JG
    [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1996, 212 : 70 - ANYL
  • [5] Effects of arsenopyrite oxidation on gold dissolution in a copper(II)- ethylenediamine-thiosulfate solution
    Yang, Rencong
    Hu, Xianzhi
    Zi, Futing
    Li, Xinrong
    Chen, Shuliang
    Zhao, Li
    Li, Wanting
    Zeng, Yongmao
    [J]. JOURNAL OF WATER PROCESS ENGINEERING, 2024, 63
  • [6] Electrochemical analysis of the dissolution of gold in a copper-ethylenediamine-thiosulfate system
    Xiang, Peng-Zhi
    Liu, Qiong
    Deng, Chao
    Ye, Guo-hua
    [J]. GREEN PROCESSING AND SYNTHESIS, 2023, 12 (01)
  • [7] An electrochemical study of the effect of additives and electrolyte on the dissolution of gold in thiosulfate solutions
    Chandra, I
    Jeffrey, MI
    [J]. HYDROMETALLURGY, 2004, 73 (3-4) : 305 - 312
  • [8] Electrochemical study of gold dissolution in cyanide solution
    Lin, HK
    Chen, X
    [J]. MINERALS & METALLURGICAL PROCESSING, 2001, 18 (03) : 147 - 153
  • [9] Electrochemical study of gold dissolution in cyanide solution
    H. K. Lin
    X. Chen
    [J]. Mining, Metallurgy & Exploration, 2001, 18 : 147 - 153
  • [10] An Electrochemical Study of the Dissolution of Pure Gold And Gold-Silver Alloys in Thiosulfate Leach Solutions
    Oraby, E. A.
    Jeffrey, M. I.
    [J]. ELECTROCHEMISTRY IN MINERAL AND METAL PROCESSING 8 (EMMP 8), 2010, 28 (06): : 237 - 248
12345