电化学氢化物发生法处理含锑废水及对锑的回收
Removal of Antimony in Wastewater by Electrochemical Hydride Generation and the Recovery of Antimony
查看参考文献25篇
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文摘
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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. |
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其他语种文摘
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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. |
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来源
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环境科学
,2015,36(4):1338-1344 【核心库】
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DOI
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10.13227/j.hjkx.2015.04.027
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关键词
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电化学
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氢化物发生
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锑去除
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加热回收
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废水
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地址
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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
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0250-3301 |
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学科
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行业污染、废物处理与综合利用 |
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基金
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国家自然科学基金项目
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中国科学院地球化学研究所一三五项目
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文献收藏号
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CSCD:5387820
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