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Citation: ZHONG Chang-Geng, ZHOU Dong-Jing. Removal of Heavy Metal Impurities from Zinc Sulphate Solutions with Cellulose Xanthate[J]. Chinese Journal of Applied Chemistry, ;2002, 19(3): 298-300. shu

Removal of Heavy Metal Impurities from Zinc Sulphate Solutions with Cellulose Xanthate

ZHONG Chang-Geng ^a,, ,
ZHOU Dong-Jing ^b

1.
a Department of Chemistry, Zhangzhou Teachers' College, Zhangzhou 363000;
2.
b Department of Chemistry, Xiangtan Univesity, Xiangtan

Corresponding author: ZHONG Chang-Geng,
Received Date: 19 March 2001
Available Online: 10 December 2001
Fund Project:

Cellulose xanthates(CX) were prepared by xanthation of alkali straw cellulose. The removing of Cu²⁺, Cd²⁺, Co²⁺ and Ni²⁺ from zinc sulphate solutions by CX has been investigated as function of pH of solution, xanthate dosage, reaction time and temperature. The results show that when removing was carried out in 2 steps under the conditions pH=of 5.0~5.2 and 5.2~5.4, reaction time of 90 and 120 min and at 55℃ and 65℃, the contents of Cu²⁺, Cd²⁺, Co²⁺ and Ni²⁺ can be reduced from 270.8, 962.0, 14.22 and 10.64 mg/L to 0.12, 0.58, 0.44 and 0.52 mg/L respectively²⁺ The total loss of zinc ion in the solution was less 1%(mass fraction).
- zinc suphate,
- copper,
- cdmium,
- cobalt,
- nickel,
- cellulose xanthate
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