摘要
采用湿式氧化法在2L反应釜中处理吡虫啉农药废水,研究温度、硝酸盐和Cu/Ce复合金属氧化物作催化剂对废水氧化程度的影响。结果表明,采用湿式氧化技术处理吡虫啉农药废水的适宜操作温度为190℃,硝酸铜对吡虫啉农药废水虽有较高的催化活性,但存在Cu2+和Ce4+的溶出;通过共沉淀法制备了一系列Cu/Ce催化剂,用于催化湿式氧化吡虫啉农药废水。Cu/Ce催化剂对吡虫啉农药废水具有较好的催化活性;优化催化剂的设计和制备方法,不但可以提高COD的去除率,而且可有效降低Cu2+和Ce4+的溶出量,使该类催化剂具有广阔的使用前景。
Catalytic wet oxidation of imidacloprid pesticide wastewater were studied on a 2 L autoclave. Influences of temperature,nitrate and copper-cerium oxides catalysts were investigated. The results showed that the appropriate temperature was 190 ℃. Copper nitrate exhibited higher COD removal efficiency for imidacloprid pesticide wastewater, while existing the problem of leaching of Cu^(2+) or Ce^(4+). Cu/Ce catalysts prepared by co-precipitation exhibited better activity than that of copper nitrate or cerium nitrate.Some measures for controlling leaching of Cu^(2+) and Ce^(4+) and optimizing reaction conditions and design and preparation of the catalysts were discussed.
出处
《工业催化》
CAS
2005年第2期43-46,共4页
Industrial Catalysis
基金
陕西省教育厅基金资助项目 (0 4JK2 3 5)
关键词
催化湿式氧化
Cu/Ce复合氧化物催化剂
吡虫啉
共沉淀
catalytic wet oxidation
multiple oxide catalysts of copper and cerium
imidacloprid
co-precipitation
