零价铁活化过硫酸钠降解亚甲基蓝
Degradation of Methylene Blue by Zero Valent Iron Activated Sodium Persulfate
李江 1张翠红1
作者信息
- 1. 太原工业学院化学与化工系,山西 太原 030008
- 折叠
摘要
采用零价铁(Fe0)活化过硫酸钠工艺降解亚甲基蓝染料废水,研究了Fe0 投加量、过硫酸钠浓度、反应pH值、反应温度等操作条件对亚甲基蓝降解效果的影响.结果表明,亚甲基蓝降解的最佳条件为初始pH=3、Fe0 投加量2 mmol/L、过硫酸钠浓度 2 mmol/L,初始质量浓度 10 mg/L亚甲基蓝废水在 25℃时反应 10 min,亚甲基蓝的降解率可达 99%;温度对降解反应影响不显著;降解过程中起主要氧化作用的为硫酸根自由基.
Abstract
In this paper,the experimental study on degradation of MB dye by sodium persulfate activated with zero valent iron was carried out.Factors affecting MB degradation efficienct were disscussed,such as addition content of zero valent iron,concentration of sodium persulfate,pH value,as well as degradation temperature.The results showed the optimum conditions for the degradation of MB was the pH=3,2 mmol/L of zero valent iron and 2 mmol/L of the concentration of sodium persulfate.Under this operation condition,the MB with initial concentration of 10 mg/L can reach 99%at 25℃reacted for 10 min.Temperature on the reaction was not significant.Sulfate radical was main oxygen free radicals in reaction.
关键词
硫酸根自由基/零价铁/亚甲基蓝Key words
sulfate radical/zero valent iron/methylene blue引用本文复制引用
基金项目
大学生创新创业训练项目(202314101039)
出版年
2024
NETL
NSTL
万方数据