摘要
本研究采用电化学氧化法脱色染料亚甲基蓝溶液,研究了脱色反应速率常数,分析了脱色产物.实验结果表明,亚甲基蓝废水的脱色为拟一级反应动力学过程,在不同的温度288,298,308,318,328和338K,脱色反应速率常数为0.00253,0.00352,0.00498,0.00609,0.00763和0.01033s^-1,脱色反应速率常数随温度升高而升高,升高反应温度有利于脱色反应的进行,反应活化能为21.61kJ/mol.HPLC-QTOF-MS检测脱色反应包括开环反应、氧化还原反应和聚合反应.电解时间效率曲线证明,电化学氧化脱色反应减少反应的电能消耗和处理时间.
In this paper the decolorization of Methylene Blue was performed by electrochemical oxidation,final products and decolorization rate were analyzed.The experiment results showed that the decolorization was pseudo-first-order reaction kinetics process.At the temperatures of 288,298,308,318,328 and 338K,the reaction rate constants were 0.00253,0.00352,0.00498,0.00609,0.00763 and 0.01033s^-1 separately.The decolorization rate increased with the temperature increasing.It was also found that the reaction activation energy was 21.61kJ/mol.According to HPLC-QTOF-MS,the final products included cracking reaction,redox reaction and polymerization.Potentiostatic electrolysis curve showed that electrochemical oxidation decolorization reaction greatly reduced electron energy consumption and processing time.
作者
王莉
王俊波
潘华
吴亚兵
费燕飞
WANG Li;WANG Junbo;PAN Hua;WU Yabing;FEI Yanfei(College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou Zhejiang 310015, China;Key Laboratory of Inorganic Functional Materials, School of Chemistry and Chemical Engineering,Huangshan University, Huangshan Anhui 245041, China)
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2020年第2期232-239,共8页
Journal of Fudan University：Natural Science
基金
浙江省自然科学基金(LY19E080023)
浙江树人大学生环学院2019环境工程卓越工程师学生课题
安徽省大学生创新创业训练项目(PX-59181840)。
关键词
亚甲基蓝
电化学脱色
反应动力学
高分辨飞行时间质谱
Methylene Blue
electrochemical degradation
reaction kinetics
high resolved time-of-flight mass spectrometry
