高级搜索

微米级负载型TiO2催化剂在光催化-膜分离反应器中的应用

,  ,  , 

downloadPDF

上一篇

下一篇

费学宁, 董业硕, 陈磊, 解立平. 微米级负载型TiO2催化剂在光催化-膜分离反应器中的应用[J]. 环境工程学报, 2014, 8(1): 162-169.
引用本文: 费学宁, 董业硕, 陈磊, 解立平. 微米级负载型TiO2催化剂在光催化-膜分离反应器中的应用[J]. 环境工程学报, 2014, 8(1): 162-169.
shu
Fei Xuening, Dong Yeshuo, Chen Lei, Xie Liping. Application of micron-scale supported TiO2 catalysts in photocatalysis-membrane reactor[J]. Chinese Journal of Environmental Engineering, 2014, 8(1): 162-169.
Citation: Fei Xuening, Dong Yeshuo, Chen Lei, Xie Liping. Application of micron-scale supported TiO2 catalysts in photocatalysis-membrane reactor[J]. Chinese Journal of Environmental Engineering, 2014, 8(1): 162-169.
shu

微米级负载型TiO2催化剂在光催化-膜分离反应器中的应用

  • 1.

    天津大学化工学院, 天津 300072

  • 2.

    天津城建大学环境与市政工程学院, 天津 300384

  • 3.

    天津大学环境科学与工程学院, 天津 300072

  • 4.

    天津工业大学环境与化学工程学院, 天津 300160

  • 基金项目:

    天津市应用基础及前沿技术研究计划重点项目（11JCZDJC 24900）

  • 中图分类号: X703

Application of micron-scale supported TiO2 catalysts in photocatalysis-membrane reactor

  • 1.

    School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

  • 2.

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

  • 3.

    School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China

  • 4.

    School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China

  • Fund Project:

  • 摘要: 基于光催化-膜分离三相流化床反应器的结构特点及膜分离特性，以微米级MCM-41分子筛为载体，采用原位生成法制备微米级负载型TiO2催化剂。针对微米级负载型TiO2催化剂在光催化-膜分离反应器中的分布特性、悬浮特性、分离特性及膜污染特性进行研究。结果表明，曝气量一定的情况下，微米级负载型TiO2催化剂在光催化-膜分离反应器中具有良好的悬浮特性，且优于纳米TiO2。随着催化剂投加量的增加，悬浮浓度也随之增加。光催化反应器底部曝气0.3 m3/h、催化剂投加量为1 g/L时为宜。膜分离器中催化剂悬浮浓度明显低于光催化反应器；该微米级催化剂与纳米TiO2相比具有不粘附、不堵塞膜孔等优良特性，能够有效降低膜污染，延长分离膜使用寿命。膜底曝气为0.1 m3/h时，反应器连续运行5 h（未加反冲洗）后，微米级负载型TiO2催化剂和纳米TiO2对膜组件的污染程度分别为膜通量衰减率4.3%和37.4%。反应器连续运行72 h，膜组件依然具有很好的分离特性。
    Abstract: Based on the structural features and membrane separation characteristics of photocatalytic-membrane separation reactor, we prepared the micron-scale supported TiO2 catalysts via pore-situ hydrolysis method using MCM-41 as the carrier. The distribution characteristics, suspension characteristics, separation properties and membrane fouling characteristics of the micron-TiO2 in the reactor were studied. Results showed that the suspension characteristics of this micron-TiO2 were better than nano-TiO2 at the same aeration rate. The suspension concentration increased with the amount of catalysts. The appropriate conditions were aeration of 0.3 m3/h and catalyst dosage of 1 g/L. The concentration of suspended catalyst in the membrane separator was significantly lower than that in the photocatalytic reactor. Compared with nano-TiO2, the micron-TiO2 won't clog the membrane pores and effectively reduce membrane fouling to extend service life of the separation membrane. With the conditions of bottom aeration of 0.1 m3/h and continuous running for 5 h without backwash, the membrane flux decay rates were 4.3% and 37.4% corresponding to the membrane module contamination evoked by micron-TiO2 and nano-TiO2,respectively. The membrane module still had good separation performance after the reactor ran for 72 h continuously.
  • 加载中
  • [1] Harizanov O., Ivanova T., Harizanova A.Study of sol-gel TiO2 and TiO2-MnO obtained from a peptized solution. Materials Letters,2001,49(3):165-171
    [2] Feng Li li, Zhao Wei, Liu Yang, et al.Photocatalytic degradation of rhodamine B by nanocrystalline TiO2 loaded into MCM-41 molecular sieves.Acta Physico-Chimica Sinica,2009,25(7):1347-1351
    [3] Hosseini S., Borghei S., Vossoughi M., et al.Immobilization of TiO2 on perlite granules for photocatalytic degradation of phenol.Applied Catalysis B: Environmental,2007,74(1):53-62
    [4] Shifu C., Yunguang Y., Wei L.Preparation, characterization and activity evaluation of TiN/F-TiO2 photocatalyst.Journal of Hazardous Materials,2011,186(2):1 560-1 567
    [5] 陆萱,贾金平,余锡宾,等.TiO2-Cu2O 复合光催化材料的制备及其在可见光条件下对罗丹明B的降解.净水技术,2011,30(1):58-61 Lu Xuan, Jia Jinping, Yu Xibin, et al.Preparation of TiO2-Cu2O photocatalysts and degradation of rhodamine B solution under visible irradiation.Water Purification Technology, 2011,30(1):58-61(in Chinese)
    [6] 费学宁,张天永,解立平,等.非均相光催化:有机合成、降解、设备及其应用(第1版).北京:科学出版社,2011
    [7] 常青,解立平,费学宁,等.光催化-膜分离三相流化床循环反应装置TiO2分布特性的研究.四川大学学报(工程科学版),2012,(S1):249-254 Chang Qing,Xie Liping,Fei Xuening, et al.TiO2 distribution properties of three-phase fluidized bed recycle reactor equipment coupling with photocatalysis oxidation and organic membrane separation.Journal of Sichuan University(Engineering Science Edition), 2012,(S1):249-254(in Chinese)
    [8] Zainudin N.F., Abdullah A.Z., Mohamed A.R.Characteristics of supported nano-TiO2/ZSM-5/silica gel (SNTZS): Photocatalytic degradation of phenol. Journal of Hazardous Materials,2010,174(1-3):299-306
    [9] Meng Y., Huang X., Yang Q., et al.Treatment of polluted river water with a photocatalytic slurry reactor using low-pressure mercury lamps coupled with a membrane.Desalination,2005,181(1):121-133
    [10] Xi W., Geissen S.Separation of titanium dioxide from photocatalytically treated water by cross-flow microfiltration.Water Research,2001,35(5):1 256-1 262
    [11] 崔鹏,赵先治,周民杰,等.光催化-膜分离集成反应器及其应用.催化学报,2006,27(09):752-754 Cui Peng, Zhao Xiaozhi, Zhou Minjie, et al.Photocatalysis-membrane coupling reactor and its application.Chinese Journal of Catalysis, 2006,27(09):752-754(in Chinese)
    [12] 解立平,王能亮.一体式光催化-膜分离三相流化床反应器膜污染特性.环境工程学报,2008,2(9):1153-1158 Xie Liping, Wang Nengliang.Property of integrative three-phase fluidized bed-reactor membrane fouling coupling with photocatalysis oxidation and organic membrane separation.Chinese Journal of Environmental Engineering, 2008,2(9):1153-1158(in Chinese)
    [13] 黄涛,蒋华兵,张国亮,等.悬浮态光催化超滤膜反应器处理4BS染料废水.水处理技术,2009,35(2):72-75 Huang Tao,Jiang Huabing,Zhang Guoliang,et al. Degradation of 4BS in dying wastewater by photocatalyst suspended ultrafiltration membrane reactor. Technology of Water Treatment,2009,35(2):72-75(in Chinese)
    [14] Kochkodan V, Rolya E, Goncharuk V.Photocatalytic membrane reactors for water treatment from organic pollutants. Journal of Water Chemistry and Technology,2009,31(4):227-237
    [15] 宋绵新,周天亮,王峰.TiO2光催化剂改性掺杂与负载技术研究进展.材料导报,2006,20(8):16-20 Song Mianxin, Zhou Tianliang, Wang Feng.Recent advances in immobilization and doped of TiO2 photocatalyst.Materials Review, 2006,20(8):16-20(in Chinese)
    [16] 张书翠,姜东,唐涛,等.高分散TiO2/SBA-15的制备及光催化性能.物理化学学报,2010,26(5):1330-1336 Zhang Shucui, Jiang Dong, Tang Tao, et al.Synthesis and photocatalytic activity of highly dispersed TiO2/SBA-15.Acta Physico-Chimica Sinica,2010,26(5):1330-1336(in Chinese)
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1822
  • HTML全文浏览数:  752
  • PDF下载数:  872
  • 施引文献:  0
出版历程
  • 收稿日期:  2013-02-19
  • 刊出日期:  2014-01-03
费学宁, 董业硕, 陈磊, 解立平. 微米级负载型TiO2催化剂在光催化-膜分离反应器中的应用[J]. 环境工程学报, 2014, 8(1): 162-169.
引用本文: 费学宁, 董业硕, 陈磊, 解立平. 微米级负载型TiO2催化剂在光催化-膜分离反应器中的应用[J]. 环境工程学报, 2014, 8(1): 162-169.
shu
Fei Xuening, Dong Yeshuo, Chen Lei, Xie Liping. Application of micron-scale supported TiO2 catalysts in photocatalysis-membrane reactor[J]. Chinese Journal of Environmental Engineering, 2014, 8(1): 162-169.
Citation: Fei Xuening, Dong Yeshuo, Chen Lei, Xie Liping. Application of micron-scale supported TiO2 catalysts in photocatalysis-membrane reactor[J]. Chinese Journal of Environmental Engineering, 2014, 8(1): 162-169.
shu

微米级负载型TiO2催化剂在光催化-膜分离反应器中的应用

  • 1.  天津大学化工学院, 天津 300072
  • 2.  天津城建大学环境与市政工程学院, 天津 300384
  • 3.  天津大学环境科学与工程学院, 天津 300072
  • 4.  天津工业大学环境与化学工程学院, 天津 300160
  • 收稿日期:  2013-02-19
基金项目:

天津市应用基础及前沿技术研究计划重点项目（11JCZDJC 24900）

摘要: 基于光催化-膜分离三相流化床反应器的结构特点及膜分离特性，以微米级MCM-41分子筛为载体，采用原位生成法制备微米级负载型TiO2催化剂。针对微米级负载型TiO2催化剂在光催化-膜分离反应器中的分布特性、悬浮特性、分离特性及膜污染特性进行研究。结果表明，曝气量一定的情况下，微米级负载型TiO2催化剂在光催化-膜分离反应器中具有良好的悬浮特性，且优于纳米TiO2。随着催化剂投加量的增加，悬浮浓度也随之增加。光催化反应器底部曝气0.3 m3/h、催化剂投加量为1 g/L时为宜。膜分离器中催化剂悬浮浓度明显低于光催化反应器；该微米级催化剂与纳米TiO2相比具有不粘附、不堵塞膜孔等优良特性，能够有效降低膜污染，延长分离膜使用寿命。膜底曝气为0.1 m3/h时，反应器连续运行5 h（未加反冲洗）后，微米级负载型TiO2催化剂和纳米TiO2对膜组件的污染程度分别为膜通量衰减率4.3%和37.4%。反应器连续运行72 h，膜组件依然具有很好的分离特性。

English Abstract

    全文HTML

参考文献 (16)

返回顶部

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心