化工进展

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悬浮型光催化纳滤膜反应器处理H酸废水光催化降解效率及反应动力学

张爱勇;肖羽堂;吕晓龙;高冠道;张 萌

  

  1. 南开大学泰达学院环境科学与工程学院膜分离技术研究开发中心;天津工业大学中空纤维膜
    材料与膜过程教育部重点实验室;中国科学院南京地理与湖泊研究所
  • 出版日期:2007-11-25 发布日期:2007-11-25

Systematic investigation on photocatalytic degradation efficiency and kinetics of H-acid aqueous solution treated by suspended photocatalytic nanofiltration membrane reactor

ZHANG Aiyong;XIAO Yutang;LÜ Xiaolong;GAO Guandao;Zhang Meng   

  1. Research Center of Membrane Separation Technology,School of Environmental Science and Engineering,TEDA School,Nankai University;Key Laboratory of Hollow Fiber Membrane Materials and Membrane Process,Ministry of Education,Tianjin Polytechnic University;Nanjing
    Institute of Georaphy & Limnology,Chinese Academy of Sciences
  • Online:2007-11-25 Published:2007-11-25

摘要: 分别采用悬浮型光催化反应器和悬浮型光催化纳滤膜反应器进行光催化降解H酸溶液试验。结果表明,后者比前者具有更好的光催化处理效果。在污染物初始质量浓度分别为50 mg/L、100 mg/L和150 mg/L、ρ/ρ0≥0.7的反应条件下,悬浮型光催化反应器中污染物光催化降解过程分别遵循L-H一级、一级以及一级与0级耦合的反应动力学。而在悬浮型光催化纳滤膜反应器的耦合工艺中,光催化降解过程分别遵循L-H一级、一级与0级的耦合以及0级反应动力学模型。

Abstract: Investigations were performed with respect to the photocatalytic degradation and mineralization of H-acid aqueous solution in suspended photocatalytic reactor and suspended photocatalytic nanofiltration membrane reactor respectively. Compared to the traditional suspended photoreactor,the innovative photocatalytic membrane reactor was found to be more photoactive and attractive. Under the conditions of the ratio ρ/ρ0 (the ratio of instant H-acid concentration to the initial one) larger than 0.7,the initial substrate concentrations of 50,100 and 150 mg·L-1 respectively,the photocatalytic degradation reaction processes of H-acid aqueous solution in suspended photocatalytic reactor were observed to follow typical Langmuir-Hinshelhood first-order reaction model,first-order reaction model,and the combination of zero-order and first-order reaction model,as compared with L-H first-order reaction model,the combination of zero-order and first-order reaction model,and L-H zero-order reaction model in the innovative photocatalytic membrane reactor.

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