摘要
为考察高锰酸钾(KMnO_(4))对于染料亚甲基蓝(MB)的降解效能,研究KMnO_(4)投加量、温度、水体pH、阴离子(SO_(4)^(2-)、Cl^(-)、NO^(-)_(3))浓度、腐植酸(HA)浓度对KMnO_(4)氧化降解MB的影响。结果表明,KMnO_(4)投加量对MB具有显著降解效果,KMnO_(4)投加量从5μmol/L增加到15μmol/L,MB降解率从30%提高到98%。提高反应温度或者降低反应体系pH能促进MB氧化降解反应,且在pH值为4~5的环境下,会出现提高反应效率的自催化现象。水体中背景成分SO_(4)^(2-)、Cl^(-)、NO^(-)_(3)和HA对MB的降解均具有一定的抑制作用。实际水体中KMnO_(4)对氧化降解MB也具有一定的降解效果。
To investigate the effect of potassium permanganate(KMnO_(4))on methylene blue(MB),influences of experimental conditions such as permanganate dosage,temperature,solution pH value,anions concentration(SO_(4)^(2-),Cl^(-),NO^(-)_(3)),and humic acid(HA)were analyzed.Results indicated that KMnO_(4)had a positive effect on MB degradation.With the dosage of KMnO_(4)increased from 5μmol/L to 15μmol/L,the degradation efficiency of MB could be increased from 30%to 98%.The increase of temperature or decrease of solution pH value could promote the degradation of MB,and there were autocatalysis under acidic condition(pH value=4~5).The presence of SO_(4)^(2-),Cl^(-),NO^(-)_(3)and HA had significant inhibitory effect on the degradation of MB by KMnO_(4).In real waters KMnO_(4)also had a certain degradation effect on the degradation of MB.
作者
张福苗
武道吉
卢楠
郝玉友
谭凤训
罗从伟
成小翔
王士顺
周加彦
高翠玲
ZHANG Fumiao;WU Daoji;LU Nan;HAO Yuyou;TAN Fengxun;LUO Congwei;CHENG Xiaoxiang;WANG Shishun;ZHOU Jiayan;GAO Cuiling(School of Municipal and Environmental Engineering,Shandong Jianzhu University,Jinan 250101,China;Affiliated Cancer Hospital of Shandong First Medical University,Jinan 250117,China;Juxian Urban and Rural Construction Service Center,Rizhao 276500,China;Shandong Institute for Product Quality Inspection,Jinan 250102,China)
出处
《净水技术》
CAS
2021年第8期74-80,共7页
Water Purification Technology
基金
国家重点研发计划(2017YFF0209903)
山东省重点研发计划(重大科技创新工程)(2020CXGC011203)
国家自然科学基金(51908335)
山东省自然科学基金(ZR2018BEE036)
中国博士后基金(2020M672085)
山东省博士后创新项目(202002023)
山东建筑大学博士研究基金(XNBS1822)
关键词
高锰酸钾
亚甲基蓝
氧化降解
potassium permanganate(KMnO_(4))
methylene blue(MB)
oxidative degradation
