溶液pH对Fe-Mn催化氧化甲基橙去除效果的影响研究  

Effect of pH on the catalytic oxidation of Fe-Mn removal of methyl orange

作　　者：刘蓓[1] 张永丽[1] 张静[1] 柯武 周鹏[1] 

机构地区：[1]四川大学建筑与环境学院,成都610065

出　　处：《黑龙江大学工程学报》2016年第1期41-45,共5页Journal of Engineering of Heilongjiang University

基　　金：教育部创新团队资助项目(ITR1027);四川环保科技计划资助项目(2013HB08)

摘　　要：研究了Fe-Mn掺杂催化剂在溶液不同p H值条件下催化氧化及吸附对甲基橙降解情况的影响。结果表明,在碱性、中性和弱酸性条件下,催化氧化对甲基橙的去除效果比单独臭氧氧化有一定提高,但催化剂对甲基橙基本没有吸附作用;在强酸性条件下(p H=3),催化剂对甲基橙具有较好的吸附作用,同时催化氧化效果明显,在反应进行20 min时甲基橙的去除率能够达到88.15%,与臭氧单独氧化相比去除率提高了24%。反应中均伴随有Fe、Mn离子的溶出,但对催化氧化无明显的影响。It studied how the Fe-Mn-doped catalyst＇s catalytic oxidation and adsorption in solutions of different p H values affected the degradation of methyl orange. The results showed that the efficiency of the catalytic oxidation removing methyl orange was better than ozonation under alkaline,neutral and weakly acidic conditions,but there was basically no catalyst of methyl orange for the adsorption. The catalyst performed a good adsorption of methyl orange under strongly acidic condition（ p H = 3）,meanwhile,the effect of catalytic oxidation was obvious. The removal rate of methyl orange can reach 88. 15% higher 24% than the effect of ozonation when the reaction proceeded to 20 min. Reactions were accompanied by the dissolution of Fe and Mn ions which had no significant effect on the catalytic oxidation.

关 键 词：臭氧化 催化氧化 甲基橙 PH值 

分 类 号：X52[环境科学与工程—环境工程]