FeMnMg氧化物Fenton催化降解有机废水  

Research of Fe Mn Mg Oxide Nano Particles Fenton- Degraded Methylene Blue

作　　者：贾若琨[1] 李佳[1] 

机构地区：[1]东北电力大学化学工程学院,吉林吉林132012

出　　处：《东北电力大学学报》2014年第6期47-53,共7页Journal of Northeast Electric Power University

基　　金：国家自然科学基金(51003010);吉林省科技发展计划项目(SKLSSM201132;20140101090JC)

摘　　要：采用高温煅烧硝化法制备Fe Mn Mg氧化物纳米晶,并采用扫描电镜(SEM)对Fe Mn Mg氧化物进行表征。结果表明,高温煅烧硝化法制备的Fe Mn Mg氧化物粒径为纳米范围,具有均匀的粒子尺寸和晶体尺寸。采用不同配比的Fe Mn Mg氧化物纳米晶催化剂对亚甲基蓝模拟的有机废水进行Fenton催化降解实验,对实验结果进行分析讨论。Fe Mn Mg的摩尔比为2∶3∶1的氧化物对亚甲基蓝的降解效果最好。当p H值为7左右,反应温度为25℃时,降解速率最快。Fe Mn Mg氧化物催化剂的投加量为0.012 g,保证了亚甲基蓝较好的降解率。在反应体系中采用选取30%H2O20.5 m L(即2 mmol/L),能达到较好的氧化降解效果。Fe Mn Mg oxide nanocrystals were prepared by a high temperature calcination method,and they were characterized by scanning electron microscope（ SEM）. The results showed that Fe Mn Mg oxide nanocrystals prepared with temperature calcination method were nano particle size range,and the Fe Mn Mg oxide nanocrystals had uniform particle size and crystallite size. The strong H2O2- activating ability of Fe Mn Mg oxide nanocrystals showed promising applications in the oxidative degradation of organic pollutants methylene blue. Using the best catalyst of degradation effect of methylene blue in the experiments,carried on the optimal Fenton catalytic conditions on the exploring experiment. We studied the dosing quantity of catalyst Fe Mn Mg oxide nanocrystals,the addition content of H2O2,p H value and reaction temperature effect influence on catalytic degradation of methylene blue solution.

关 键 词：Fe MN Mg氧化物纳米晶 FENTON降解 亚甲基蓝 

分 类 号：X703[环境科学与工程—环境工程]