水中天然有机物富里酸的光催化氧化研究  

Photocatalytic Oxidation of Natural Organic Matter-Fulvic Acid in Water

作　　者：傅剑锋[1] 季民[1] 金洛楠[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072

出　　处：《化学通报》2005年第11期871-875,共5页Chemistry

摘　　要：以粉末态TiO2为催化剂对水中天然有机物富里酸(FA)进行了光催化氧化的研究,考察了在光催化-超滤反应器中直接光氧化、曝气条件、错流速度、催化剂浓度、初始pH等因素对富里酸氧化的影响。结果表明,光催化氧化明显优于直接光氧化对富里酸的影响,另外在空气曝气、pH减小以及增大错流速度的条件下均能有效提高富里酸的去除率。This work investigated TiO2 powder photocatalyzed oxidation for the degradation of natural organic matter-fulvic acid in a suspension photocatalysis-ultrafiltration reactor. The experimental variables included photolysis, aeration conditions, cross-flow velocity, TiO2 concentration and solution pH values. Results showed that photocatalytic oxidation of fulvic acid was better than direct photolysis alone and the fulvic acid removal efficiency could be improved greatly under the conditions of air aeration, decreasing initial pH values and increasing cross-flow velocity.

关 键 词：富里酸 光催化氧化 二氧化钛 超滤 

分 类 号：O644.1[理学—物理化学]