Fe2+催化H2O2、S2O82-、S2O82--H2O2降解橙黄G
马丽华1，3，万金泉1，2
- 1华南理工大学环境工程系，广东 广州 510006；2华南理工大学纸浆造纸工程国家重点实验室，广东广州 510640；3华南理工大学工业聚集区污染控制与生态修复教育部重点实验室，广东 广州 510006
Degradation of orange G by H2O2、S2O82－、S2O82－-H2O2with ferrous ion
MA Lihua1，3，WAN Jinquan1，2
- 1School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China; 2State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China; 3Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou 510006, Guangdong, China
摘要： 以偶氮染料橙黄G（OG）为目标污染物，研究Fe2+分别催化H2O2、S2O82－、H2O2-S2O82－降解0.1 mmol/L OG Fe2+/H2O2体系，[Fe2+]=1 mmol/L, pH=3, [H2O2]0=10 mmol/L,降解30 min OG脱色率为96%，随着pH值增大和[H2O2]0＞10 mmol/L，OG脱色率减小，呈线性变化。Fe2+/S2O82－体系，随着S2O82－初始浓度增加OG脱色率增大，随着pH值增大OG脱色率减小，呈非线性变化。Fe2+/H2O2-S2O82－体系，pH=3, [H2O2]0=2 mmol/L， [S2O82－]0＞10 mmol/L时OG脱色率持续增大。Fe2+/H2O2-S2O82－体系矿化率最高。利用乙醇和硝基苯作为分子探针，采用分子探针竞争实验鉴定该体系中产生的SO4?和OH?。