Stability of Copper-based Catalysts for Catalytic Wet Air Oxidation

摘要：

Catalytic wet air oxidation (CWAO) of the coking wastewater over Cu-Ce-Zn complex oxide catalyst in a high pressure reactor has been investigated. The results show that when Cu:Ce:Zn=6:2:5, pH=7.5, T(production)=60℃, T(sinter)=800℃ and time(sinter)=6h, the effectiveness of the catalyst shows best. The best conditions of treating the coking wastewater are as follows: under 1.5g/L of the total catalyst, T(reaction)=200 ℃,PO2=1.6MPa, Time=60min, the CODcr removal rate can be achieved to 89.3%, and the decomposition of NH3-N can be achieved to 85.3%. After the circulation of 10 times, the activity of the catalyst decreased by 10%, and the quantity of Cu 2+ leaching was 0.38 mg/L, which is basically steady.

关键词： catalytic wet air oxidation co-precipitation Cu-Ce-Zn wastewater treatment Cu 2+ leaching

作者: HAN Lihua ZHANG Xueli Rui Yulan LIANG Yinghua ZHENG Shuilin

作者单位: College of Chemical and Environmental Engineering, China University of Mining and Technology Beijing College of Chemical Engineering and Biotechnology, Hebei Polytechnic University, 063009 Tangshan, Ch College of Chemical and Environmental Engineering, China University of Mining and Technology Beijing

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）