摘要：

考察了pH、温度、反应时间、浓度、光照、腐殖酸、干扰离子等因素对高铁酸钾降解双酚A的影响,并探讨了高铁酸钾降解双酚A的动力学机理以及对二沉池出水中双酚A的降解作用。研究表明:在pH=9.0,室温条件下,反应10 min后双酚A的降解率达最大值;光照对双酚A降解基本没有影响;腐殖酸对双酚A的降解有一定促进作用;干扰离子对双酚A降解影响较为复杂,既有促进作用又有抑制作用。以二沉池出水为基体,当m(高铁酸钾)∶m(双酚A)=5∶1,双酚A初始质量浓度为5.0 mg/L时,反应4 min后,双酚A的降解率达99%。实验结果表明高铁酸钾对双酚A具有良好的降解效果。

关键词: 高铁酸钾, 双酚A, 二沉池出水, 腐殖酸

Abstract:

The effects of pH，temperature，time，concentration，illumination，humic acid， interference ions，etc. on potassium ferrate(Ⅵ ) degradation of bisphenol A have been investigated. The kinetics mechanisms of potassium ferrate (Ⅵ) degradation of bisphenol A and the degradation effect on the secondary sedimentation tank effluent are discussed. The research shows that the degradation rate of bisphenol A reaches the maximum value，when pH is 9.0， at room temperature and reaction time is 10 min. Illumination has no effect on the degradation of bisphenol A，humic acid has stimulative effect on the degradation of bisphenol A to a certain extent，and the effect of interference ions on the degradation of bisphenol A is rather complicated，having both stimulative effect and inhibition effect. The secondary sedimentation tank effluent is used as substrate，and the degradation rate of bisphenol A reaches 99%，when m〔potassium ferrate(Ⅵ)〕：m(bisphenol A)=5∶1，the initial mass concentration of bisphenol A is 5.0 mg/L and reaction time is 4 min . The results show that potassium ferrate(Ⅵ) has quite good degradation effect on bisphenol A.

Key words: potassium ferrate (Ⅵ), bisphenol A, secondary sedimentation tank effluent, humic acid

中图分类号: 

• X52