中国造纸2012，Vol.31Issue(1)：28-32,5.
混凝-光催化联用技术处理制浆中段废水的研究——TiO2-SiO2光催化剂的制备
Treatment of Paper Mill Wastewater by Coagulation Coupled with Photocatalysis——The Preparation of TiO2-SiO2 Photocatalyst
摘要
Abstract
TiO,-SiO, photocatalysl was prepared by using butyl litanate, tetraethoxysilane, absolute ethanol as raw material and adopting Sol-Gel technique. The preparation conditions were, optimized by the signal-factor experiments, and the. Optimum conditions included 2. 33:1 of the mole ratio of butyl tilanale and tetraethoxysilane, 600℃ of the calcining temperature, 3 h of the calcining time and 3 of solution pH value. The CODcr of the treated wastewater could be reduced to 67. 8 mg/L under the conditions of 3h of UV irradiation and 0. 5 g/L of the TiO2-SiO2 dosage. The particle size of TiO2-SiO2 photocatalyst ranged from 100 nm to 500 nm. TiO2-SiO2 photocatalyst showed high catalytic activity and stability, and it could be used repeatedly for several times. Moreover, the comparison of TiO2-SiO2 pholocatalyst and TiO2 photo-calalyst showed that, the treatment efficiency of paper mill wastewater by TiO,-SiO2 prevailed over TiO2 evidently.关键词
TiO2-SiO2/光催化剂/CODCr去除率/制浆中段废水Key words
TiO1-SiO1/photocatalyst/CODcr removal percentage/paper mill wastewaler分类
资源环境引用本文复制引用
郑堰日,刘以凡,刘明华..混凝-光催化联用技术处理制浆中段废水的研究——TiO2-SiO2光催化剂的制备[J].中国造纸,2012,31(1):28-32,5.基金项目
省部共建国家重点实验室开放课题(K-092006) （K-092006）
