摘要
采用紫外(UV)照射、过二硫酸盐(PDS)单独反应体系或组合反应体系对去除十二烷基苯磺酸钠(SDBS)的效率进行了研究。考察了不同体系、初始pH值、PDS投加量、紫外光强度、SDBS初始浓度等各种关键因素条件对SDBS去除效率的影响。研究表明,UV/PDS体系对SDBS的去除效果最优。在初始pH值为7,UV光照强度为30 W,SDBS初始浓度为40 mg/L,PDS浓度为1.5 mmol/L,反应时间为60 min的情况下,SDBS去除效率达到96.85%。通过自由基猝灭实验证明UV/PDS体系中起主要氧化降解作用的活性自由基为硫酸根自由基(SO^(-)_(4)·)。
The removal efficiency of sodium dodecyl benzene sulfonate(SDBS)is studied by ultraviolet(UV)irradiation,persulfate(PDS)single reaction system or combined reaction system.The effects of various key factors such as different systems,initial pH value,PDS dosage,UV intensity,and SDBS initial concentration on SDBS removal efficiency are investigated.The results show that the UV/PDS system has the best removal effect on SDBS.When the initial pH value is 7,the UV light intensity is 30 W,the initial concentration of SDBS is 40 mg/L,the concentration of PDS is 1.5 mmol/L,and the reaction time is 60 min,the removal efficiency of SDBS reaches 96.85%.Through the free radical quenching experiment,it is proved that the active free radical that played a major oxidative degradation role in the UV/PDS system is sulfate radical(SO^(-)_(4)·).
作者
刘秉涛
连保帅
程雨
张唯佳
LIU Bingtao;LIAN Baoshuai;CHENG Yu;ZHANG Weijia(College of Environmental and Municipal Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China)
出处
《河南化工》
2025年第6期31-35,共5页
Henan Chemical Industry
关键词
紫外光
过二硫酸盐
十二烷基苯磺酸钠
高级氧化技术
ultraviolet light
peroxydisulfate
sodium dodecyl benzene sulfonate
advanced oxidation technology
