摘要
黄铁矿(FeS_(2))是一种价格低廉,来源广泛的天然硫化铁矿物,在有机污染物降解方面展现出巨大潜力。然而,其易氧化特性导致形成的氧化黄铁矿的催化活性有待深入探索。研究了黄铁矿在非均相芬顿体系中催化降解水中罗丹明B(RhB)的性能,考察了催化剂用量、H_(2)O_(2)浓度、pH值、阴离子和腐殖酸对RhB降解率的影响。结果表明,在催化剂投加量0.5 g·L^(-1),H_(2)O_(2)浓度4.0 mmol·L^(-1)及反应温度25℃的条件下,20 min内对RhB溶液的降解率为96.5%。在较宽pH值(3~9)范围内具有适应性,且能有效抵抗水体中无机阴离子和腐殖酸的影响。
Pyrite(FeS_(2))is an inexpensive and widely available natural iron sulfide mineral that shows great potential for organic pollutant degradation.However,its easily oxidizable nature leads to the formation of oxidized pyrite whose catalytic activity is to be explored deeply.In this study,we explored the perf-ormance of pyrite in the catalytic degradation of Rhodamine B(RhB)in water in a heterogeneous Fenton system.The effects of catalyst dosage,H_(2)O_(2)concentration,pH value,anion and humic acid on the degradation of RhB were investigated.The results showed that the degradation of RhB solution was 96.5%in 20 min under the conditions of catalyst dosage of 0.5 g·L^(-1),H_(2)O_(2)concentration of 4.0 mmol·L^(-1)and reaction temperature of 25℃.It was adaptable in a wide pH value of 3~9 and effectively resisted the effects of inorganic anions and humic acids in the water column.
作者
蔡文韬
周贺鹏
马梦霞
刘征煌
唐学昆
CAI Wentao;ZHOU Hepeng;MA Mengxia;LIU Zhenghuang;TANG Xuekun(School of Sources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Yichun Lithium New Energy Industry Research Institute,Yichun 336000,Jiangxi,China)
出处
《工业催化》
2025年第5期80-87,共8页
Industrial Catalysis
基金
江西省教育厅科学技术研究项目(GJJ2200823)
江西理工大学博士科研启动基金项目(205200100645)。
关键词
三废处理与综合利用
黄铁矿
芬顿法
罗丹明B
降解
three waste treatment and comprehensive utilization
pyrite
Fenton process
Rhodamine B
degradation
