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李爽, 邱春生, 孙力平, 钟远, 骆尚廉. 铝板电絮凝法去除重金属离子Cd2+和Ni2+[J]. 环境工程学报, 2016, 10(6): 2855-2861. doi: 10.12030/j.cjee.201501160
引用本文: 李爽, 邱春生, 孙力平, 钟远, 骆尚廉. 铝板电絮凝法去除重金属离子Cd2+和Ni2+[J]. 环境工程学报, 2016, 10(6): 2855-2861. doi: 10.12030/j.cjee.201501160
shu
Li Shuang, Qiu Chunsheng, Sun Liping, Zhong Yuan, Lo Shanglian. Removal of Cd2+ and Ni2+ from water by electrocoagulation with aluminum electrode[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2855-2861. doi: 10.12030/j.cjee.201501160
Citation: Li Shuang, Qiu Chunsheng, Sun Liping, Zhong Yuan, Lo Shanglian. Removal of Cd2+ and Ni2+ from water by electrocoagulation with aluminum electrode[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2855-2861. doi: 10.12030/j.cjee.201501160
shu

铝板电絮凝法去除重金属离子Cd2+和Ni2+

  • 1.

    天津城建大学环境与市政工程学院, 天津 300384

  • 2.

    天津市水质科学与技术重点实验室, 天津 300384

  • 3.

    台湾大学环境工程学研究所, 台北 10673

  • 基金项目:

    国家水体污染控制与治理科技重大专项(2012ZX07308-002)

    天津市高等学校科技发展基金计划项目(20130515)

  • 中图分类号: X703

Removal of Cd2+ and Ni2+ from water by electrocoagulation with aluminum electrode

  • 1.

    School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China

  • 2.

    Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China

  • 3.

    Graduate Institute of Environmental Engineering, Taiwan University, Taipei 10673, China

  • Fund Project:

  • 摘要: 以模拟遭受突发性镉、镍污染的水体为研究对象,采用铝电极板电絮凝法去除水中Cd2+和Ni2+,考察电流密度、反应时间、溶液初始pH与极板间距等操作参数对重金属离子Cd2+和Ni2+去除效果的影响,在最佳工况条件下,Cd2+和Ni2+的去除率均能达到99.99%以上。在模拟废水中投加5.0 mg/L阴离子表面活性剂十二烷基硫酸钠(SDS),与不投加SDS过程相比,电流效率从101.4%上升到118.0%,电絮凝除Cd2+过程,同样达到99.52%的去除率,反应时间从12 min缩短到10 min,对于Ni2+去除过程,同样达到98.61%去除率,反应时间从10 min缩短到8 min。2个反应过程均符合一级动力学模型。阳极表面扫描电子显微镜(SEM)表征显示,SDS添加有助于Al3+的释放。
    Abstract: The removal of Cd2+ and Ni2+ from simulated wastewater contaminated by heavy metals through electrocoagulation was investigated using aluminum electrode. Effects of current density, reaction time, pH, and electrode distance on the removal efficiency were tested. Under optimum operational conditions, the removal rates of Cd2+ and Ni2+ could reach 99.99%. Sodium dodecyl sulfonate (SDS) (5.0 mg/L) was added to the simulated wastewater; compared with the process with no SDS addition, during the process of Cd2+ removal, the current efficiency increased from 101.4% to 108.0%. The reaction time could reduce from 12 min to 10 min for the same removal rate of 99.52%, as for the Ni2+ removal process, compared to reaction time reduction from 10 min to 8 min for the same removal rate of 98.61% with no SDS addition. Both the processes could be simulated with first-order models. Scanning electron microscopy (SEM) images of the anode's surface indicated that the addition of SDS was conducive to the release of Al3+.
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  • 收稿日期:  2015-03-11
  • 刊出日期:  2016-06-03
李爽, 邱春生, 孙力平, 钟远, 骆尚廉. 铝板电絮凝法去除重金属离子Cd2+和Ni2+[J]. 环境工程学报, 2016, 10(6): 2855-2861. doi: 10.12030/j.cjee.201501160
引用本文: 李爽, 邱春生, 孙力平, 钟远, 骆尚廉. 铝板电絮凝法去除重金属离子Cd2+和Ni2+[J]. 环境工程学报, 2016, 10(6): 2855-2861. doi: 10.12030/j.cjee.201501160
shu
Li Shuang, Qiu Chunsheng, Sun Liping, Zhong Yuan, Lo Shanglian. Removal of Cd2+ and Ni2+ from water by electrocoagulation with aluminum electrode[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2855-2861. doi: 10.12030/j.cjee.201501160
Citation: Li Shuang, Qiu Chunsheng, Sun Liping, Zhong Yuan, Lo Shanglian. Removal of Cd2+ and Ni2+ from water by electrocoagulation with aluminum electrode[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2855-2861. doi: 10.12030/j.cjee.201501160
shu

铝板电絮凝法去除重金属离子Cd2+和Ni2+

  • 1.  天津城建大学环境与市政工程学院, 天津 300384
  • 2.  天津市水质科学与技术重点实验室, 天津 300384
  • 3.  台湾大学环境工程学研究所, 台北 10673
  • 收稿日期:  2015-03-11
基金项目:

国家水体污染控制与治理科技重大专项(2012ZX07308-002)

天津市高等学校科技发展基金计划项目(20130515)

摘要: 以模拟遭受突发性镉、镍污染的水体为研究对象,采用铝电极板电絮凝法去除水中Cd2+和Ni2+,考察电流密度、反应时间、溶液初始pH与极板间距等操作参数对重金属离子Cd2+和Ni2+去除效果的影响,在最佳工况条件下,Cd2+和Ni2+的去除率均能达到99.99%以上。在模拟废水中投加5.0 mg/L阴离子表面活性剂十二烷基硫酸钠(SDS),与不投加SDS过程相比,电流效率从101.4%上升到118.0%,电絮凝除Cd2+过程,同样达到99.52%的去除率,反应时间从12 min缩短到10 min,对于Ni2+去除过程,同样达到98.61%去除率,反应时间从10 min缩短到8 min。2个反应过程均符合一级动力学模型。阳极表面扫描电子显微镜(SEM)表征显示,SDS添加有助于Al3+的释放。

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