| 废印刷线路板中贵金属金的浸取研究 |
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| 引用本文： | 顾卫星,黄晨,杨义晨,朱萍,李传华.废印刷线路板中贵金属金的浸取研究[J].环境科学与技术,2008,31(4):98-100. |
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| 作者姓名： | 顾卫星 黄晨 杨义晨 朱萍 李传华 |
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| 作者单位： | 1. 上海新金桥工业废弃物管理有限公司,上海,201206
2. 上海大学环境与化学工程学院,上海,200072 |
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| 基金项目： | 浦东新区科技发展基金科技专项资助基金 |
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| 摘 要： | 采用盐酸和氯酸钠作为反应试剂,从印刷电路板废料中回收金。考察了盐酸浓度、氯酸钠用量、固液比、浸取时间条件对反应的影响。实验结果表明:酸度过高或过低对金的收率都不利;对于5g废料、以固液比1:8,4g氯酸钠,3mol/L盐酸,搅拌1h进行反应,金的回收率可达90%以上。所用试剂廉价易得,设备简单,操作方便:反应过程中无有害物产生,实现了贵重资源的再生利用。
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| 关 键 词： | 废印刷线路板 金 回收 |
| 文章编号： | 1003-6504(2008)04-0098-03 |
| 修稿时间： | 2007年3月17日 |
Recovery of Aurum from Waste Printed Circuit Boards |
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| GU Wei-xing,HUANG Chen,YANG Yi-chen,ZHU Ping,LI Chuan-hua.Recovery of Aurum from Waste Printed Circuit Boards[J].Environmental Science and Technology,2008,31(4):98-100. |
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| Authors: | GU Wei-xing HUANG Chen YANG Yi-chen ZHU Ping LI Chuan-hua |
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| Abstract: | Recovery of gold from waste printed circuit boards(PCBs) with HCl and NaClO3 solution was studied.The influence of concentration of hydrochloric acid,amount of sodium chlorate,solid-liquid ratio and reaction time was investigated.Results indicated that it was unfavorable for recovering rate of gold when acidity was too high or too low.For 5g waste material,under the condition of solid-liquid ratio of 1:8,sodium chlorate 4g,hydrochloric acid 3mol/L and reaction time 1h,the recovering rate of gold could reach above 90%,with no toxicity for reagents,cheap simple equipment and easy operation.No toxicant was produced during the reaction. |
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| Keywords: | waste printed circuit boards gold recovery |
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