Abstract:Mn/Ce compound oxides catalyst was employed to decomposition of main components (such as n-hexanoic, n-butyric, acetic acids and ammonia nitrogen) in old landfill leachates by catalytic wet air oxidation (CWAO), and then the interaction between organic acids and ammonia nitrogen was discussed during the oxidation process.The main components in old landfill leachates were decomposed (>90% in 120min) by CWAO, and the inhibition between n-hexanoic, n-butyric and acetic acids was observed for the degradation of organic acids mixtures during the temperature-rising stage in CWAO. Furthermore, the degradation rate of n-butyric acid decreased when ammonia nitrogen present and n-butyric acid also inhibited decomposition of ammonia nitrogen in CWAO. Ni2+ could lead the catalyst to poison, and restrained catalytic activity of the catalyst.
收稿日期: 2008-10-08
引用本文:
李鱼, 王健, 郑爽, 汤洁. 垃圾渗滤液主要组分的催化湿式氧化降解[J]. 中国环境科学, 2009, 29(5): 497-501.
LI Yu, WANG Jian, ZHENG Shuang, TANG Jie. Catalytic wet air oxidation of main components of landfill leachate.. CHINA ENVIRONMENTAL SCIENCECE, 2009, 29(5): 497-501.