| 蚀刻液水合肼还原除铜 |
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| 引用本文： | 汪晓军,万小芳,何花,袁笑一.蚀刻液水合肼还原除铜[J].化工环保,2004,24(4):288-289. |
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| 作者姓名： | 汪晓军 万小芳 何花 袁笑一 |
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| 作者单位： | 华南理工大学,造纸与环境工程学院,广东,广州,510641 |
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| 基金项目： | 广东省科学技术厅资助项目(2002C31630) |
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| 摘 要： | 将电路板厂废弃的蚀刻液，经氢氧化铜沉淀法回收大部分铜后，再采用水合肼还原，进一步除铜。反应温度为50℃，水合肼质量分数为3．0％，溶液pH为6．0，废液中铜的去除率可达98.5％，处理后废液中铜的质量浓度低于0．2g／L，可作为碱性蚀刻液重复利用。
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| 关 键 词： | 蚀刻液 铜 水合肼 废水处理 |
| 文章编号： | 1006-1878(2004)04-0288-02 |
| 修稿时间： | 2003年5月25日 |
Removal of Copper from Waste Etching Liquor by Hydrazine Hydrate |
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| ng Xiaojun,Wan Xiaofang,He Hua,Yuan Xiaoyi.Removal of Copper from Waste Etching Liquor by Hydrazine Hydrate[J].Environmental Protection of Chemical Industry,2004,24(4):288-289. |
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| Authors: | ng Xiaojun Wan Xiaofang He Hua Yuan Xiaoyi |
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| Abstract: | e waste etching liquor discharged by a circuit plate factory was treated first by precipitation to recover most of copper in form of copper hydroxide, and then treated by adding hydrazine hydrate to remove further copper. The results show that under the conditions of reaction temperature 50,hydrazine hydrate dosage 3.0%, solution pH 6.0, the removal rate of copper can reach 98.5 % , the mass concentration of copper in treated liquor can drop to 0.2 g/L,and the treated liquor can reused as etching liquor. |
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| Keywords: | ching liquor copper hydrazine hydrate wastewater treatment |
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