| 电化学氢化物发生法处理含锑废水及对锑的回收 |
| 摘要点击 3569 全文点击 1707 投稿时间：2014-09-21 修订日期：2014-12-11 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 电化学 氢化物发生 锑去除 加热回收 废水 |
| 英文关键词 electrochemistry hydride generation antimony removal heat recovery wastewater |
| 作者 | 单位 | E-mail | | 陈京晶 | 中国科学院地球化学研究所环境地球化学国家重点实验室, 贵阳 550002
中国科学院大学, 北京 100049 | chenjingjing@mail.gyig.ac.cn | | 张国平 | 中国科学院地球化学研究所环境地球化学国家重点实验室, 贵阳 550002 | zhangguoping@vip.gyig.ac.cn | | 李海霞 | 中国科学院地球化学研究所环境地球化学国家重点实验室, 贵阳 550002
中国科学院大学, 北京 100049 | | | 付志平 | 中国科学院地球化学研究所环境地球化学国家重点实验室, 贵阳 550002
中国科学院大学, 北京 100049 | | | 欧阳小雪 | 中国科学院地球化学研究所环境地球化学国家重点实验室, 贵阳 550002
中国科学院大学, 北京 100049 | | | 吴琼 | 中国科学院地球化学研究所环境地球化学国家重点实验室, 贵阳 550002
中国科学院大学, 北京 100049 | |
|
| 中文摘要 |
| 采用电化学氢化物发生法对模拟含锑废水进行处理,锑与水电解产生的氢形成氢化物从溶液中脱除,而后收集并加热分解锑化氢得到金属锑. 实验表明,在酸性条件下对Sb(Ⅲ)去除效果较好,pH=4时去除率为76.1%. Sb(Ⅲ)与电解水产生的氢结合形成锑化氢从溶液中逸出是溶液中锑去除的最主要途径(回收率为66.2%),电沉积和吸附也对锑的去除做出少量贡献. Sb(Ⅴ)须预还原为Sb(Ⅲ)再氢化进行去除. 试用了铅、石墨、钨这3种电解阴极材料,铅电极处理效果最佳. |
| 英文摘要 |
| An electrochemical hydride generation method was developed for the removal of antimony in wastewater. Hydrogen was generated in the electrolysis of water. Hydrogen reacted with Sb and formed stibine, which volatilized from the solution. Then, stibine was heated and decomposed to elemental Sb. Based on these, Sb in wastewater could be removed and recovered. The highest removal of Sb (76.1%) was achieved in acidic solution (pH=4). The formation of stibine was proven to contribute most significantly (66.2%) to the removal of antimony in the solution, while the electro-deposition and adsorption also made a small contribution. In the treatment, Sb(Ⅴ) must be pre-reduced to Sb(Ⅲ) prior to the formation of stibine. Lead, graphite and tungsten were employed as the materials for cathode, and lead electrode was found most suitable for the removal of antimony. |
|
|
|
