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无机阴离子对热活化过硫酸盐体系中降解MDEA模拟废水的影响

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李永涛, 赖连珏, 岳东. 无机阴离子对热活化过硫酸盐体系中降解MDEA模拟废水的影响[J]. 环境工程学报, 2018, 12(3): 788-795. doi: 10.12030/j.cjee.201709118
引用本文: 李永涛, 赖连珏, 岳东. 无机阴离子对热活化过硫酸盐体系中降解MDEA模拟废水的影响[J]. 环境工程学报, 2018, 12(3): 788-795. doi: 10.12030/j.cjee.201709118
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LI Yongtao, LAI Lianjue, YUE Dong. Effects of inorganic anions on persulfate heat-activation for degradation of methyldiethanolamine (MDEA) simulated wastewater[J]. Chinese Journal of Environmental Engineering, 2018, 12(3): 788-795. doi: 10.12030/j.cjee.201709118
Citation: LI Yongtao, LAI Lianjue, YUE Dong. Effects of inorganic anions on persulfate heat-activation for degradation of methyldiethanolamine (MDEA) simulated wastewater[J]. Chinese Journal of Environmental Engineering, 2018, 12(3): 788-795. doi: 10.12030/j.cjee.201709118
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无机阴离子对热活化过硫酸盐体系中降解MDEA模拟废水的影响

  • 1.

    西南石油大学化学化工学院，成都 610500

  • 2.

    四川省环境保护油气田污染防治与环境安全重点实验室，成都 610500

  • 基金项目:

    中石化集团公司项目（部759）

Effects of inorganic anions on persulfate heat-activation for degradation of methyldiethanolamine (MDEA) simulated wastewater

  • 1.

    College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China

  • 2.

    Key Laboratory of Environmental Pollution Prevention on Oil and Gas Fields and Environmental Safety in Sichuan, Chengdu 610500, China

  • Fund Project:

  • 摘要: 采用热活化过硫酸盐技术处理MDEA模拟废水，阐明了降解过程中Cl-、CO32-、HCO3-对降解过程的影响。结果表明：无机阴离子的存在会抑制MDEA的降解过程，其中 CO32-与HCO3-单独存在于体系中对MDEA的抑制作用与其浓度呈正相关，离子浓度较高时（0.3 mol·L-1），反应3 h，抑制率分别达到19%与11.5%，而Cl-单独存在于体系时，浓度小于0.1 mol·L-1时，抑制作用呈正相关；浓度在0.1~0.3 mol·L-1时，其抑制作用与浓度呈负相关；氯离子浓度为0.1 mol·L-1时为最大抑制浓度，其抑制率为15%。共生抑制响应曲面分析表明，3种无机阴离子之间交互作用显著，受与SO4-·的反应速率常数控制，抑制的显著性大小为Cl->CO32->HCO3-。
    Abstract: Heat activated persulfate technique used in the treatment of MDEA simulated wastewater has been investigated in this study and the effect of Cl-, CO32-and HCO3- on the degradation process has clarified. Results showed that the presence of Cl-, CO32-and HCO3- inhibited the degradation of MDEA. The concentration of CO32-and HCO3-was positively correlated with inhibition of MDEA degradation. The inhibition of MDEA degradation was positively correlated with the concentration of CO32-and HCO3-. When the ion concentration was high（0.3 mol·L-1）, the reaction time was 3 hours and the inhibition rates were 19% and 11.5% respectively. In the presence of Cl- alone, the inhibitory effect was positively correlated when the concentration was less than 0.1 mol·L-1.The inhibitory effect was negatively correlated with the concentration between 0.1 mol·L-1 and 0.3 mol·L-1 and the inhibition rate was the largest when the concentration was 0.1mol·L-1, the inhibition rate was 15%. Response surface analysis results showed that the three anions existing simultsneously, the interaction between the three inorganic anions was significant and controlled by the reaction rate constant of SO4-?,and the significantly inhibitory effect on sulfate radical was presented as following: Cl-> CO32->HCO3-.
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  • 刊出日期:  2018-03-22

无机阴离子对热活化过硫酸盐体系中降解MDEA模拟废水的影响

  • 1. 西南石油大学化学化工学院，成都 610500
  • 2. 四川省环境保护油气田污染防治与环境安全重点实验室，成都 610500
基金项目:

中石化集团公司项目（部759）

摘要: 采用热活化过硫酸盐技术处理MDEA模拟废水，阐明了降解过程中Cl-、CO32-、HCO3-对降解过程的影响。结果表明：无机阴离子的存在会抑制MDEA的降解过程，其中 CO32-与HCO3-单独存在于体系中对MDEA的抑制作用与其浓度呈正相关，离子浓度较高时（0.3 mol·L-1），反应3 h，抑制率分别达到19%与11.5%，而Cl-单独存在于体系时，浓度小于0.1 mol·L-1时，抑制作用呈正相关；浓度在0.1~0.3 mol·L-1时，其抑制作用与浓度呈负相关；氯离子浓度为0.1 mol·L-1时为最大抑制浓度，其抑制率为15%。共生抑制响应曲面分析表明，3种无机阴离子之间交互作用显著，受与SO4-·的反应速率常数控制，抑制的显著性大小为Cl->CO32->HCO3-。

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