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| Lead Leaching from Spent Lead Paste with Alkaline Medium |
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Received:November 01, 2017
Revised:November 10, 2017
Accepted:November 14, 2017
Published Online:April 16, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.05.003 |
| KeyWord:alkaline medium; lead paste; Box-Behnken response surface optimization |
| Author | Institution |
| YAN Youzi |
广西大学资源环境与材料学院 |
| HUANG Kui |
广西大学资源环境与材料学院 |
| LIU Hengyi |
广西大学资源环境与材料学院 |
| FENG Shuiqing |
广西大学资源环境与材料学院 |
| ZHU Kun |
广西大学资源环境与材料学院 |
| DONG Haili |
广西大学资源环境与材料学院 |
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| Abstract: |
| Alkaline medium system was used to leach lead from spent lead paste. Effects of leaching time, temperature, NaOH concentration, and ratio of solid to liquid (S/L) on lead leaching efficiency were investigated. The interactions of these four factors to dissolve lead ionic were investigated through Box-Behnken response surface optimization experiment. The results demonstrate that lead leaching rate is 56.35% with lead concentration of 17.33 g/L under the optimum conditions including leaching time of 33 min, leaching temperature of 75 ℃, NaOH concentration of 7 mol/L, and S/L=43 g/L. The remaining solids are mainly PbO2, which can be used directly after purification. |
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