锰渣/H2O2非均相Fenton体系催化降解亚甲基蓝的研究

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中文摘要：采用锰渣和H2O2构成的非均相Fenton体系降解亚甲基蓝,研究了初始pH值、H2O2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/H2O2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、H2O2浓度 10 mmol/L、初始pH值 2.5、锰渣加入量 2g/L条件下反应 120 min,锰渣/H2O2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/H2O2非均相Fenton体系中,·OH对亚甲基蓝的降解起主导作用.

外文标题：Degradation of Methylene Blue by Manganese Residue/H2O2 Heterogeneous Fenton Catalyst

外文摘要：Methylene blue was degraded by adopting a heterogeneous Fenton system composed of manganese residue and H2O2,and the effects of initial pH value,H2O2 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/H2O2 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,H2O2 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/H2O2 heterogeneous Fenton system,·OH plays a leading role in the degradation of methylene blue.

外文关键词：

manganese residuehydrogen peroxidemethylene blueFenton oxidationheterogeneous Fentoncatalytic degradationtreatment of organic industrial wastewater

作者：

郑国庆、易允龙、薛兴勇、苏俏俏、韩要丛、蓝丽红、陈贞南

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作者单位：

广西民族大学化学化工学院,广西南宁 530006

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

吉利百矿集团有限公司,广西百色 533000

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

基金：

广西民族大学科研项目引进人才科研启动基金崇左市科技计划广西壮族自治区高等学校中青年教师科研基础能力提升项目(2022)广西自然科学基金

项目编号：

2020KJQD15崇科2023ZY05022022KY01602021GXNSFBA196065

出版年：

2024

DOI：

10.3969/j.issn.0253-6099.2024.02.028

矿冶工程

长沙矿冶研究院有限责任公司中国金属学会

矿冶工程

CSTPCD北大核心

影响因子：1.137

ISSN：0253-6099

年,卷(期)：2024.44(2)

参考文献量12