摘要
采用旋转盘反应器(SDR)降解苯酚废水,对苯酚初始浓度、溶液p H值、H2O2的添加对其光催化降解动力学的影响进行了研究。结果表明,SDR内的光催化降解动力学特征符合一级反应动力学规律。苯酚初始浓度越低,反应速率常数k值越大;溶液p H=2时的降解速率高于其他p H值;H2O2的协同作用使苯酚的降解速率明显提高,其速率常数k值为未添加H2O2时的78倍。
The effects of initial phenol concentration,pH value,and H2O2 on the photocatalytic degradation kinetics of phenol wastewater were studied in a spinning disk reactor. The results showed that the above operating conditions have little influence on the photocatalytic degradation of phenol,which follows pseudo-first-order reaction kinetics. The lower the initial concentration of phenol,the higher is the reaction rate; the extent of degradation is maximum at pH = 2; and the degradation rate is improved up to 78 times when H2O2 is added,due to synergistic effect.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第3期1305-1309,共5页
Chinese Journal of Environmental Engineering
关键词
旋转盘反应器
含酚废水
光催化降解
动力学
spinning disk reactor
phenol wastewater
photocatalysis degradation
kinetics
