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施周, 曾寒轩, 邓林. 钴铁镍三元水滑石催化PMS降解水中刚果红[J]. 环境工程学报, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067
引用本文: 施周, 曾寒轩, 邓林. 钴铁镍三元水滑石催化PMS降解水中刚果红[J]. 环境工程学报, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067
shu
SHI Zhou, ZENG Hanxuan, DENG Lin. Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067
Citation: SHI Zhou, ZENG Hanxuan, DENG Lin. Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067
shu

钴铁镍三元水滑石催化PMS降解水中刚果红

  • 1.

    湖南大学土木工程学院, 长沙 410082

  • 2.

    湖南大学建筑安全与节能教育部重点实验室, 长沙 410082

  • 基金项目:

    国家科技支撑计划资助项目（2012BAJ24B03）

  • 中图分类号: X524

Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite

  • 1.

    College of Civil Engineering, Hunan University, Changsha 410082, China

  • 2.

    Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Hunan University, Changsha 410082, China

  • Fund Project:

  • 摘要: 采用化学共沉淀法制备由过渡金属钴、铁、镍组成的磁性三元水滑石CoFeNi-LDH，催化过硫酸氢钾（PMS）产生SO4-·自由基，降解水中偶氮染料刚果红（CR），系统地考察了初始pH、催化剂投加量、PMS投加量对降解CR的影响。实验结果表明：在pH=4.0~10.0范围内，CoFeNi-LDH/PMS催化体系对CR的降解速率均较高；随着CoFeNi-LDH和PMS投加量的增加，CR的降解速率也逐渐加快。3次循环再生实验后，CoFeNi-LDH对CR的降解率在20 min内依然保持在88%左右。实验结果表明，这种新型磁性三元水滑石不仅具有高效的催化效果而且易于从水中分离，在有机染料废水的处理方面，有着良好的前景。
    Abstract: A magnetic layered double hydroxide (LDH) synthesized by coprecipitation method was used to activate peroxymonosulfate (PMS) to generate sulfate radicals (SO4-·) for the degradation of congo red (CR). Effects of initial pH, catalyst dosage and PMS dosage were discussed systematically in this study. Experiments results showed that CoFeNi-LDH/PMS system exhibited a high degradation efficiency for CR within a wide range of solution pH from 4.0 to 10.0. The degradation rate of CR increased rapidly with the increase of PMS dosage or catalyst dosage. After three cyclic utilization of CoFeNi-LDH, the degradation rate of CR degraded by CoFeNi-LDH/PMS system still remained 88% within 20 min. Above results indicated that the novel catalyst have a bright prospects in dyes treatment not only because of its efficient catalytic effect but also the characteristic of easily separated from water.
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出版历程
  • 收稿日期:  2017-03-10
  • 刊出日期:  2017-08-26
施周, 曾寒轩, 邓林. 钴铁镍三元水滑石催化PMS降解水中刚果红[J]. 环境工程学报, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067
引用本文: 施周, 曾寒轩, 邓林. 钴铁镍三元水滑石催化PMS降解水中刚果红[J]. 环境工程学报, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067
shu
SHI Zhou, ZENG Hanxuan, DENG Lin. Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067
Citation: SHI Zhou, ZENG Hanxuan, DENG Lin. Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067
shu

钴铁镍三元水滑石催化PMS降解水中刚果红

  • 1.  湖南大学土木工程学院, 长沙 410082
  • 2.  湖南大学建筑安全与节能教育部重点实验室, 长沙 410082
  • 收稿日期:  2017-03-10
基金项目:

国家科技支撑计划资助项目（2012BAJ24B03）

摘要: 采用化学共沉淀法制备由过渡金属钴、铁、镍组成的磁性三元水滑石CoFeNi-LDH，催化过硫酸氢钾（PMS）产生SO4-·自由基，降解水中偶氮染料刚果红（CR），系统地考察了初始pH、催化剂投加量、PMS投加量对降解CR的影响。实验结果表明：在pH=4.0~10.0范围内，CoFeNi-LDH/PMS催化体系对CR的降解速率均较高；随着CoFeNi-LDH和PMS投加量的增加，CR的降解速率也逐渐加快。3次循环再生实验后，CoFeNi-LDH对CR的降解率在20 min内依然保持在88%左右。实验结果表明，这种新型磁性三元水滑石不仅具有高效的催化效果而且易于从水中分离，在有机染料废水的处理方面，有着良好的前景。

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