环境工程学报2013，Vol.7Issue(8)：3073-3078,6.
纳米TiO2/硅藻土光催化降解废水中二甲胺
Photocatalytic degradation of dimethylamine in wastewater with nano-TiO2/diatomite
摘要
Abstract
The dimethylamine (DMA) is a kind of commonly but hardly decomposed industrially organic pollutant.TiO2/diatomite was prepared by sol-gel method in order to decompose DMA of low concentration (≤ 400 mg/L),which was characterized by SEM and XRD.Influences of initial concentration,pH,photocatalyst amount and additional oxidant on photocatalytic activity were investigated.Kinetics and degradation mechanism were also analyzed.Prepared TiO2/diatomite was mixed crystal of anatase and rutile in nano level.The degradation rate of 400 mg/L DMA was up to about 70％ with 3 g/L TiO2/diatomite under normal conditions.The photocatalytic degradation matched the Langmuir-Hinshelwood kinetic model and its process was dimethylamine (DMA) →methylamine (MA) →CO2/CO32-,H2O and NH4+.关键词
二甲胺(DMA)/纳米材料/光催化/二氧化钛(TiO2)/硅藻土Key words
dimethylamine(DMA)/ nano material/ photocatalytic/ titanium dioxide(TiO2)/ diatomite分类
资源环境引用本文复制引用
李霞,胡勤海,陈菊芬,刘苗,宋雪斐,张荣臻..纳米TiO2/硅藻土光催化降解废水中二甲胺[J].环境工程学报,2013,7(8):3073-3078,6.基金项目
浙江大学与杭州金枫叶科技有限公司合作项目 （）
