摘要
为有效地去除水中难降解有机物罗丹明B(RhB),采用热活化过一硫酸盐(PMS)高级氧化法降解RhB,分析水溶液的温度、pH值、PMS初始浓度及RhB初始浓度对RhB降解效率的影响,并分析RhB降解的动力学及热力学规律。结果表明:在T=60℃,pH=5.00,[PMS]=6 mM,[RhB]=1 mg/L,t=180 min时,RhB的去除率可达到94.3%;在不同试验条件下,对RhB的降解均符合准一级反应动力学方程;热/PMS方法降解RhB的活化能为53.631 kJ/mol。研究旨在为PMS降解染料废水提供参考。
To effectively remove the refractory organic substance Rhodamine B(RhB)from water,RhB was degraded by advanced oxidation with heat-activated peroxymonosulfate(PMS).The effects of temperature,pH,initial concentration of PMS and initial concentration of RhB in aqueous solution on the degradation efficiency of RhB were investigated,and the kinetic and thermodynamic laws of RhB degradation were analyzed.The results showed that the removal rate of RhB could reach 94.3%at T=60℃,pH=5.00,[PMS]=6 mM,[RhB]=1 mg/L and t=180 min.The degradation of RhB under various experimental conditions was in accordance with the primary reaction kinetic equation;the activation energy of RhB degradation by heat/PMS method was 53.631 kJ/mol.This study provides some reference value for peroxymonosulfate degradation of dye wastewater.
作者
邓淇元
宋铁红
姜一
李东师
刘译谦
DENG Qi-yuan;SONG Tie-hong;JIANG Yi;LI Dong-shi;LIU Yi-qian(School of municipal&environmental engineering,Jilin Jianzhu university,Changchun 130118,China;Changchun municipal engineering design and research institute Co.,LTD.,Changchun 130033,China)
出处
《吉林建筑大学学报》
CAS
2024年第5期31-37,共7页
Journal of Jilin Jianzhu University
基金
吉林省科技厅科技发展计划项目(YDZJ202201ZYTS681).
关键词
加热
过一硫酸盐
罗丹明B
动力学
热力学
heating
peroxymonosulfate
Rhodamine B
kinetics
thermodynamics
