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高铁酸钾法去除水中1,1-DCE

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李亚龙, 金轶杰, 杨琦, 秦思. 高铁酸钾法去除水中1,1-DCE[J]. 环境工程学报, 2016, 10(3): 1048-1052. doi: 10.12030/j.cjee.20160306
引用本文: 李亚龙, 金轶杰, 杨琦, 秦思. 高铁酸钾法去除水中1,1-DCE[J]. 环境工程学报, 2016, 10(3): 1048-1052. doi: 10.12030/j.cjee.20160306
shu
Li Yalong, Jin Yijie, Yang Qi, Qin Si. Removal of 1,1-dichloroethylene in wastewater by potassium ferrate[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1048-1052. doi: 10.12030/j.cjee.20160306
Citation: Li Yalong, Jin Yijie, Yang Qi, Qin Si. Removal of 1,1-dichloroethylene in wastewater by potassium ferrate[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1048-1052. doi: 10.12030/j.cjee.20160306
shu

高铁酸钾法去除水中1,1-DCE

  • 1.

    中国地质大学(北京)水资源与环境学院, 北京 100083

  • 基金项目:

    国家自然科学基金资助(50578151)

    国家重大科技专项(2009ZX07207-008,2009ZX07419-002,2009ZX07207-001,2015ZX07406005-002)

    中央高校基本科研业务费专项资金(2652013101,2652013086,2652013087)

    科技部重大仪器专项(2012YQ060115)

  • 中图分类号: X703

Removal of 1,1-dichloroethylene in wastewater by potassium ferrate

  • 1.

    School of Water Resources and Environment,China University of Geosciences, Beijing 100083, China

  • Fund Project:

  • 摘要: 选取水中常见的1,1-DCE为目标污染物,通过间歇实验探讨了目标化合物在以高铁酸钾为氧化剂的情况下,不同反应条件下的去除效果、反应动力学以及反应机理。实验结果表明,不同pH值对高铁酸钾去除1,1-DCE的反应速率影响很大,在pH=3时去除效果最好;反应符合一级动力学方程,去除速率随温度升高而增大,且活化能Ea为28.52 kJ/mol,表明温度对高铁酸钾的氧化性有很大影响;反应的ΔH*>0,ΔS*G*>0;以NaNO3调节反应体系的离子强度,当离子强度为0~0.2 mol/L时,高铁酸钾去除1,1-DCE的反应速率随离子强度的增大而减小。通过对实验机理的分析看出,高铁酸钾法去除卤代烃机理为氧化及吸附共存。
    Abstract: Removal of 1,1-dichloroethylene (1,1-DCE) by potassium ferrate in terms of efficiency, reaction kinetics, main influencing factors, and dechlorination mechanism was studied under different reaction conditions. The pH played an important role in 1,1-DCE removal and an optimum value of 3 was obtained. Moreover, the removal process followed pseudo-first-order kinetics and showed ΔH*>0, ΔS*G*>0. The rate constants of 1,1-DCE increased with the increase in temperature with an Ea of 28.52 kJ/mol, while they decreased with the increase in iron strength in the range from 0 to 0.2 mol/L (NO3-). The analysis of the reaction mechanism showed that simultaneous oxidation reaction and adsorption were responsible for the removal of 1,1-DCE by potassium ferrate.
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出版历程
  • 收稿日期:  2015-12-05
  • 刊出日期:  2016-03-18
李亚龙, 金轶杰, 杨琦, 秦思. 高铁酸钾法去除水中1,1-DCE[J]. 环境工程学报, 2016, 10(3): 1048-1052. doi: 10.12030/j.cjee.20160306
引用本文: 李亚龙, 金轶杰, 杨琦, 秦思. 高铁酸钾法去除水中1,1-DCE[J]. 环境工程学报, 2016, 10(3): 1048-1052. doi: 10.12030/j.cjee.20160306
shu
Li Yalong, Jin Yijie, Yang Qi, Qin Si. Removal of 1,1-dichloroethylene in wastewater by potassium ferrate[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1048-1052. doi: 10.12030/j.cjee.20160306
Citation: Li Yalong, Jin Yijie, Yang Qi, Qin Si. Removal of 1,1-dichloroethylene in wastewater by potassium ferrate[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1048-1052. doi: 10.12030/j.cjee.20160306
shu

高铁酸钾法去除水中1,1-DCE

  • 1. 中国地质大学(北京)水资源与环境学院, 北京 100083
  • 收稿日期:  2015-12-05
基金项目:

国家自然科学基金资助(50578151)

国家重大科技专项(2009ZX07207-008,2009ZX07419-002,2009ZX07207-001,2015ZX07406005-002)

中央高校基本科研业务费专项资金(2652013101,2652013086,2652013087)

科技部重大仪器专项(2012YQ060115)

摘要: 选取水中常见的1,1-DCE为目标污染物,通过间歇实验探讨了目标化合物在以高铁酸钾为氧化剂的情况下,不同反应条件下的去除效果、反应动力学以及反应机理。实验结果表明,不同pH值对高铁酸钾去除1,1-DCE的反应速率影响很大,在pH=3时去除效果最好;反应符合一级动力学方程,去除速率随温度升高而增大,且活化能Ea为28.52 kJ/mol,表明温度对高铁酸钾的氧化性有很大影响;反应的ΔH*>0,ΔS*G*>0;以NaNO3调节反应体系的离子强度,当离子强度为0~0.2 mol/L时,高铁酸钾去除1,1-DCE的反应速率随离子强度的增大而减小。通过对实验机理的分析看出,高铁酸钾法去除卤代烃机理为氧化及吸附共存。

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