锰渣/H_(2)O_(2)非均相Fenton体系催化降解亚甲基蓝的研究  

Degradation of Methylene Blue by Manganese Residue/H_(2)O_(2)Heterogeneous Fenton Catalyst

作　　者：郑国庆 易允龙 薛兴勇 苏俏俏 韩要丛 蓝丽红 陈贞南 ZHENG Guoqing;YI Yunlong;XUE Xingyong;SU Qiaoqiao;HAN Yaocong;LAN Lihong;CHEN Zhennan(School of Chemistry and Chemical Engineering,Guangxi Minzu University,Nanning 530006,Guangxi,China;Guangxi Higher Education Institutes Key Laboratory for New Chemical and Biological Transformation Process Technology,Nanning 530006,Guangxi,China;Geely Baikuang Group Co Ltd,Baise 533000,Guangxi,China)

机构地区：[1]广西民族大学化学化工学院,广西南宁530006 [2]广西高校化学与生物转化过程新技术重点实验室,广西南宁530006 [3]吉利百矿集团有限公司,广西百色533000

出　　处：《矿冶工程》2024年第2期119-123,共5页Mining and Metallurgical Engineering

基　　金：广西民族大学科研基金(引进人才科研启动项目,2020KJQD15);崇左市科技计划项目(崇科2023ZY0502);2022年度广西高校中青年教师科研基础能力提升项目(2022KY0160);广西自然科学基金(2021GXNSFBA196065)。

摘　　要：采用锰渣和H_(2)O_(2)构成的非均相Fenton体系降解亚甲基蓝,研究了初始pH值、H_(2)O_(2)浓度、锰渣加入量及反应温度对降解性能的影响,考察了锰渣的循环稳定性能,探讨了锰渣/H_(2)O_(2)体系去除亚甲基蓝的机理。结果表明,反应温度25℃、亚甲基蓝浓度20 mg/L、H_(2)O_(2)浓度10 mmol/L、初始pH值2.5、锰渣加入量2 g/L条件下反应120 min,锰渣/H_(2)O_(2)体系对亚甲基蓝的去除率超过98.1%;锰渣循环使用5次后,反应300 min时对亚甲基蓝的去除率仍可达95.5%。在锰渣/H_(2)O_(2)非均相Fenton体系中,·OH对亚甲基蓝的降解起主导作用。Methylene blue was degraded by adopting a heterogeneous Fenton system composed of manganese residue and H_(2)O_(2),and the effects of initial pH value,H_(2)O_(2)concentration,dosage of manganese residue and reaction temperature on the degradation performance were studied.The reusability of manganese residue was investigated,and the removal mechanism of methylene blue in the manganese residue/H_(2)O_(2)system was also discussed.The results show that the removal rate of methylene blue can exceed 98.1%after 120 min reaction at temperature of 25℃,with methylene blue concentration of 20 mg/L,H_(2)O_(2)concentration of 10 mmol/L,manganese residue dosage of 2 g/L,and initial pH value of 2.5.After the manganese residue is recycled for 5 times,the removal rate of methylene blue can be still up to 95.5%by 300 min reaction.In the manganese residue/H_(2)O_(2)heterogeneous Fenton system,·OH plays a leading role in the degradation of methylene blue.

关 键 词：锰渣 双氧水 亚甲基蓝 FENTON氧化 非均相FENTON 催化降解 有机工业废水处理 

分 类 号：X703[环境科学与工程—环境工程]