黄铁矿活化单过硫酸盐降解亚甲基蓝的研究  

Study on Degradation Performance for Methylene Blue by Pyrite Activated Peroxymonosulfate

作　　者：左霜霜 苏妮 李斯淇 杨敬 黄阳[1,2,3] ZUO Shuang-shuang;SU Ni;LI Si-qi;YANG Jing;HUANG Yang(School of Environment and Resource,Southwest University of Science and Technology,Sichuan Mianyang 621010;Key Laboratory of Solid Waste Treatment and Recycling,Ministry of Education,Sichuan Mianyang 621010;Sichuan Engineering Lab of Non-metallic Mineral Powder Modification and High-value Utilization,Southwest University of Science and Technology,Sichuan Mianyang 621010,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]固体废物处理与资源化教育部重点实验室,四川绵阳621010 [3]四川省非金属矿粉体改性与高质化利用技术工程实验室,四川绵阳621010

出　　处：《广州化工》2023年第14期91-94,共4页GuangZhou Chemical Industry

基　　金：西南科技大学大学生创新基金项目(No:CX21-084);2021年大学生创新创业训练计划项目(No:S202110619033)。

摘　　要：在对比不同天然含铁矿物活化单过硫酸盐(PMS)降解亚甲基蓝(MB)效果的基础上,研究初始p H值、亚甲基蓝浓度、PMS浓度和活化方式等条件对黄铁矿活化PMS降解亚甲基蓝的影响。结果表明,与磁铁矿、赤铁矿和黄铜矿相比,黄铁矿活化PMS降解MB的效果最佳。酸性体系更有利于自由基产生,降解效果更好。在MB浓度40 mg/L,PMS浓度0.1 mmol/L,pH=7,有光辅助60 min时对MB降解率可达86.02%。SO_(4)^(-)·、·OH、H^(+)、O_(2)·^(-)等自由基在黄铁矿活化PMS降解亚甲基蓝过程中均起作用。Methylene blue(MB)degradation by mono-persulfate(PMS)activated with four different natural iron-bearing minerals were investigated firstly.And then the effect of initial pH,MB concentration PMS concentration and activate way on pyrite activated PMS degradation of MB were investigated.The results showed that pyrite activated PMS had the best degradation effect on MB compared with magnetite,hematite and chalcopyrite.The acid system was more conducive to the generation of free radicals and higher degradation efficiency.Degradation efficiency reached 86.02% at 40 mg/L MB,0.5 g/L dosages,0.1 mmol/L PMS,pH2 and simulated sunlight.SO_(4)^(-)·,·OH,H^(+)and O_(2)·^(-) involved and played a role in the degradation of methylene blue by pyrite activated PMS.

关 键 词：黄铁矿 单过硫酸盐 亚甲基蓝 降解 

分 类 号：X703.1[环境科学与工程—环境工程]