摘要
采用简单方法制备RE-TiO2/PAC(RE代表稀土元素,PAC指粉末活性炭)光催化剂,用于焦化废水的光催化处理,表现出良好的协同效应。当m(PAC)∶m(TiO2)=1∶1时制备的稀土Nd-TiO2/PAC处理效果最好。考察了废水初始pH、有机物(COD)初始浓度、催化剂浓度、气体流量对Nd-TiO2/PAC光催化处理焦化废水的影响。初始COD为385mg/L、pH为9.82的焦化废水,在气体流量为0.5 L/h、催化剂质量浓度4 g/L时,光催化处理90 min后,COD去除率可达89%。
Rare earth-doped TiO2（RE-TiO2） and powder active carbon （PAC） reagent oxidation is prepared for treating eoking wastewater. It shows very good cooperativity. When the mass ratio of PAC/TiO2 is 1：1, the treatment efficiency of Nd-TiO2/PAC is the best. The effects of initial pH, initial concentration of organism COD, concentration of catalyst, and gas flow rate on the Nd-TiO2/PAC photocatalysis treatment of eoking wastewater are investigated. When the initial COD is 385 mg/L, and coking wastewater pH is 9.82, aeration rate is 0.5 L/h and catalyst concentration is 4 g/L, and after being treated by photocatalysis for 90 min, the COD removal rate can reach 89%.
出处
《工业水处理》
CAS
CSCD
北大核心
2009年第6期15-19,共5页
Industrial Water Treatment
基金
重庆市教委科学技术研究项目(KJ080617)
关键词
焦化废水
光催化
稀土掺杂TiO2
活性炭
协同效应
coking wastewater
photocatalysis
rare-doped TiO2
active carbon
cooperativity synergistic effect
