Application of TiO<sub>2</sub>-photocatalys is -ultrafiltration reactor to the degradation of acid blue 7

Jin Luonan, Ji Min, Fu Jianfeng

doi:10.11894/1005-829x.2005.25（10).32

Industrial Water Treatment >

2005 , Vol. 25 >Issue 10: 32 - 35

DOI: https://doi.org/10.11894/1005-829x.2005.25（10).32

Application of TiO₂-photocatalys is -ultrafiltration reactor to the degradation of acid blue 7

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

Received date: 2005-03-25

Online published: 2010-10-01

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Abstract

A set of photocatalytic-ultrafiltration separation reactor for the degradation of acid blue 7 by using nanoparticle TiO₂ as photocatalyst has been designed. The experimental results showthat the well degradation effects of dye wastewaters are achieved by this reactor and TiO₂ particle can be separated from water successfully. The results obtained from influencing parameters of photocatalytic membrane reactor′s kinetic studies indicates that the rate increases from 0.0708min-1 to 0.151 5 min-1 with increasing cross-flow velocity ranging from 0.45 m/s to 1.06 m/s. The optimum TiO₂ dosage is 0.5 g/L. The increase in the initial dye concentration from 5 mg/L to 25 mg/L can decrease the degradation rate constant from 0.162 5 min-1 to 0.053 0 min-1. Being aerated with industrial grade oxygen in the experiment can get the best removal results. The pH values have substantial effect on the degradation of acid blue 7，particularly at pH 2.

Key words： nano-particle TiO₂; photocatalysis; ultrafiltration; acid blue 7

Cite this article

Jin Luonan, Ji Min, Fu Jianfeng . Application of TiO₂-photocatalys is -ultrafiltration reactor to the degradation of acid blue 7[J]. Industrial Water Treatment, 2005 , 25(10) : 32 -35 . DOI: 10.11894/1005-829x.2005.25（10).32

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