竹炭-TiO_2-光组合降解苯酚的研究  

Combinated Bamboo Charcoal-TiO_2-light for Degradation of Phenol

作　　者：陈清松[1] 叶桂足[1] 赖寿莲[1] 李晓燕[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《林产化学与工业》2006年第2期16-18,共3页Chemistry and Industry of Forest Products

基　　金：福建省教育厅资助项目(JA03045);福建省科技计划重点项目(2004I003)

摘　　要：研究了竹炭-TiO2-光组合体系,即吸附-催化-光氧化协同降解苯酚的特性,探索了竹炭用量、竹炭粒度、苯酚溶液pH值及其初始浓度对苯酚去除率的影响.结果表明：竹炭用量 1 g/L 时,光氧化效果最好;粒度越小,苯酚去除效果越差,粒径以0.520～0.246 mm 为宜;酸性条件有利苯酚的去除,当pH值为3.0时,效果最好;苯酚的起始浓度升高,其去除率降低,但平均反应速率增大.Bamboo charcoal, TiO2 and light were combinated as a synergistic system of adsorption-catalysis-photooxidation, and the characteristic of phenol degradation by this system was investigated. The effects of amount and granularity of bamboo charcoal, pH value and initial concentration of phenol on removal of phenol were discussed. The results show that the effect of photooxidation is the optimum when the amount of bamboo charcoal is 1 g/L. The smaller granularity of bamboo charcoal is, the worse is degradation of phenol. Granularities of 0. 520-0. 246 mm are appropriate. Acidity is propitious to degrade phenol, and when pH value is 3 the degradation effect is the best. Increase of initial concentration of phenol results in the decrease of degradation, but increase of average reaction speed.

关 键 词：竹炭 TIO2 光催化 光氧化 苯酚 

分 类 号：TQ424[化学工程] X703[环境科学与工程—环境工程]