水体中壬基酚光催化降解影响因素的研究

Photodegradation of Nonylphenol in Water

目的 了解水环境中壬基酚的迁移转化和行为。方法 以 HPL C为分析手段 ,用 UV- Fe2 + - H2 O2 光催化氧化体系研究壬基酚 (NP)的光降解。结果 壬基酚最佳光解条件为 5 .0 mg/ L Fe2 + ,1m l/ L H2 O2 和 p H 2 .5 ;影响 NP光催化氧化反应因素的显著性顺序为 :光照时间 >NP的初始浓度 >试液的 p H>H2 O2 投加量 >Fe2 + 投加量。结论 U V- Fe2 + - H2 O2 光催化氧化体系对 NP有较好的降解作用。

Objective To investigate the environmental degradation process of nonylphenol(NP). Methods The NP was detected by HPLC, and the system of ultraviolet light, ferrous ion and hydrogen peroxide was used to promote photo-degradation of NP in water. Results The maximal photo-degradation of NP occurred at the 5.0 mg/L of Fe 2+, pH 2.5 and 1 ml/L of H 2O 2, the environmental factors in order of importance to promoting the photo-degradation of NP were: illumination time, initial concentration of NP, pH value, concentration of H 2O 2, concentration of Fe 2+. Conclusion The system of ultraviolet light, ferrous ion and hydrogen peroxide was effective in promoting the photo-degradation of NP.