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微波作用下氧化碱浸铜冶炼烟灰脱砷的动力学

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王倩, 郭莉, 吴晨捷, 杜冬云. 微波作用下氧化碱浸铜冶炼烟灰脱砷的动力学[J]. 环境工程学报, 2017, 11(11): 6072-6077. doi: 10.12030/j.cjee.201701101
引用本文: 王倩, 郭莉, 吴晨捷, 杜冬云. 微波作用下氧化碱浸铜冶炼烟灰脱砷的动力学[J]. 环境工程学报, 2017, 11(11): 6072-6077. doi: 10.12030/j.cjee.201701101
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WANG Qian, GUO Li, WU Chenjie, DU Dongyun. Arsenic removal from copper smelting ash assisted by microwave induced oxidation process[J]. Chinese Journal of Environmental Engineering, 2017, 11(11): 6072-6077. doi: 10.12030/j.cjee.201701101
Citation: WANG Qian, GUO Li, WU Chenjie, DU Dongyun. Arsenic removal from copper smelting ash assisted by microwave induced oxidation process[J]. Chinese Journal of Environmental Engineering, 2017, 11(11): 6072-6077. doi: 10.12030/j.cjee.201701101
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微波作用下氧化碱浸铜冶炼烟灰脱砷的动力学

  • 1.

    催化材料科学国家民委-教育部共建重点实验室, 中南民族大学资源与环境学院, 武汉 430074

  • 2.

    生物地质与环境地质-国家重点实验室, 中国地质大学(武汉)环境学院, 武汉 430074

  • 基金项目:

    湖北省科技支撑项目（2014BEC029）

  • 中图分类号: X756

Arsenic removal from copper smelting ash assisted by microwave induced oxidation process

  • 1.

    Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Education, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, ChinaL

  • 2.

    State Key Laboratory of Biological Geology and Environmental Geology, China University of Geosciences(Wuhan), Wuhan 430074, China

  • Fund Project:

  • 摘要: 采用微波氧化辅助Na2S-NaOH浸出体系对铜冶炼烟灰（简称"烟灰"）进行研究。结果表明：当温度60℃，NaOH和烟灰的投加量比例为5 g：10 g，Na2S和烟灰的投加量比例为8 g：10 g，固液比为1：20时，砷的浸出率为98.45%。动力学研究表明：砷的浸出过程在313~343 K内符合"未反应收缩核"模型，浸出过程受未反应核周围残留固体膜层扩散控制，经拟合得出浸出动力学方程，浸出表观活化能Ea=13.46 kJ·mol-1。
    Abstract: Copper smelting dust (referred to as "soot") was investigated through Na2S-NaOH leaching process assisted with microwave induced oxidation process. Results showed that microwave induced oxidation process was able to enhance the alkaline leaching process to improve the leaching of arsenic. Arsenic leaching rate reached 98.45% with addition of 5 g NaOH and 8 g Na2S per 10 g dust respectively and S/L ratio of 1:20.Kinetic study indicated that the leaching process followed the shrinking-core model in the temperature range of 313~343 K. The leaching rate of arsenic was controlled by diffusion control of residual solid film formed around the unreacted core. The leaching kinetic equation was established, and the apparent activation energy was Ea=13.46 kJ·mol-1.
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  • 收稿日期:  2017-04-17
  • 刊出日期:  2017-11-15

微波作用下氧化碱浸铜冶炼烟灰脱砷的动力学

  • 1. 催化材料科学国家民委-教育部共建重点实验室, 中南民族大学资源与环境学院, 武汉 430074
  • 2. 生物地质与环境地质-国家重点实验室, 中国地质大学(武汉)环境学院, 武汉 430074
  • 收稿日期:  2017-04-17
基金项目:

湖北省科技支撑项目（2014BEC029）

摘要: 采用微波氧化辅助Na2S-NaOH浸出体系对铜冶炼烟灰（简称"烟灰"）进行研究。结果表明：当温度60℃，NaOH和烟灰的投加量比例为5 g：10 g，Na2S和烟灰的投加量比例为8 g：10 g，固液比为1：20时，砷的浸出率为98.45%。动力学研究表明：砷的浸出过程在313~343 K内符合"未反应收缩核"模型，浸出过程受未反应核周围残留固体膜层扩散控制，经拟合得出浸出动力学方程，浸出表观活化能Ea=13.46 kJ·mol-1。

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