树脂纳米零价铁催化过硫酸钠降解甲基橙的研究  

Research on Degradation of Methyl Orange by Sodium Persulfate Activated with Resin Supported Nano Zero-valent Iron

作　　者：崔广华[1] 程俊[2] 秦黎[1] 

机构地区：[1]河北联合大学化学工程学院,河北唐山063009 [2]中国环境管理干部学院,河北秦皇岛066004

出　　处：《中国环境管理干部学院学报》2012年第5期46-49,71,共5页Journal of Environmental Management College of China

摘　　要：采用树脂负载零价纳米铁(NZVI-resin)作为铁源,活化过硫酸钠,产生硫酸根自由基氧化降解偶氮染料甲基橙。考察了温度、NZVI-resin加入量、pH值及过硫酸钠的浓度等因素对甲基橙降解率的影响,并对其降解动力学规律作了初步探讨。结果表明:降解反应遵循准一级反应动力学,在pH=3.0、Fe0=0.2 g.L-1、Na2S2O8=1.33 g.L-1的条件下,30 mg.L-1的甲基橙溶液降解率为99.7%。The article adopted the resin with nano zero-valent iron complex（NZVI-resin） as a source of iron to activate sodium persulfate and generate sulfate free radical which may oxidize degradation of methyl orange azo dye.The effects of temperature,the dosages of NZVI-resin,pH,the concentration of sodium persulfa te on methyl orange degradation were also examined.In addition,its degradation kinetics was discussed.The results showed that the degradation of methyl orange followed the first order kinetics.And in the initial pH=3,Fe0=0.2 g.L-1,Na2S2O8=1.33 g.L-1,the degradation efficiency of methyl orange solution with a concentration of 30 mg.L-1could reach 99.7%.

关 键 词：离子交换 零价纳米铁 硫酸根自由基 甲基橙 降解 

分 类 号：X703.1[环境科学与工程—环境工程]