Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 7    No. 3    September 1997

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CATHODE ELECTRODEPOSITION OF LEAD IN Pb2+-OH-- C4H4O62- SYSTEM
Chen Weiping1; Chen Fancai1; Peng Yanbing1; Li Qizhong1 Bian Kejun2; Zheng Yue2

1.Xi′an Heavy Machinery Institute; Xi′an 710032;
2.Institute of Environmental Protection; Hunan University; Changsha 410082

Abstract:By using dynamic potential method, the influence of technical parameters was studied on the cathode process of electrowinning Pb in Pb2+-OH-- C4H4O2- 6 electrolytic system, and the methods for improving lead electrodeposition efficiency were put forward. The results showed that higher Pb(Ⅱ) content is due to the cooperative effect of [OH]- with [C4H4O6]2- ligands in the electrolyte. The content of NaOH and KNa C4H4O6 in the electrolyte together with mixing ratio between them decide the existing forms of Pb(Ⅱ) and the relative content of its complex compounds. Under proper conditions, higher electrodeposition efficiency can be achieved.

 

Key words: lead NaOH KNa C4H4O6 electrochemistry cathode polarization

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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