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Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway

文献类型：期刊论文

作者Li, Haonan1,2,3; Liao, Xiaoyong1,2; Li, You1,2; Liu, Qiongzhi1,2,3; Luo, Junpeng1,2,3
刊名FRONTIERS IN ENVIRONMENTAL SCIENCE
出版日期2022-12-07
卷号10页码:10
关键词humic acid (HA) persulfate activation fluorene free radicals degradation mechanism
DOI10.3389/fenvs.2022.1083616
通讯作者Li, You(liyou@igsnrr.ac.cn)
英文摘要This study evaluated the performance of humic acid (HA)/ferrous ion (Fe (II)) activating persulfate (PS) for fluorene (FLU) degradation. Results showed that HA/Fe(II)/PS system exhibited the best performance for PS activation to eliminate FLU. Compared to the non-activated case, the degradation efficiency of FLU had increased by 37%-43% in HA activated PS system. HA had significant synergistic effects on Fe (II) activated PS process, but ferric ion (Fe(III)) inhibited the degradation. We confirmed that semiquinone radical (SQmiddot-) acted as the dominant activating group by quenching and electron spin resonance (ESR) experiments, which promoted more radicals generated. The proportion of benzoquinone (BQ) and Fe(II) wielded a considerable influence on FLU degradation, and the optimal concentration ratio was 1:1. Four possible degradation pathways of FLU were deduced, involving ring-opening of the aromatic ring, decarboxylation, oxidative dehydrogenation and hydroxylation.
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; ORGANIC-MATTER ; ENHANCED DEGRADATION ; CONTAMINATED SOIL ; HUMIC-ACID ; OXIDATION ; PAHS ; CARBON ; QUINONES ; CHLORIDE
资助项目National Nature Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; [42007129] ; [42225707] ; [XDA23010400]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者FRONTIERS MEDIA SA
WOS记录号WOS:000899899800001
资助机构National Nature Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/188166]  
专题中国科学院地理科学与资源研究所
通讯作者Li, You
作者单位1.Beijing Key Lab Environm Damage Assessment & Remed, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Li, Haonan,Liao, Xiaoyong,Li, You,et al. Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway[J]. FRONTIERS IN ENVIRONMENTAL SCIENCE,2022,10:10.
APA Li, Haonan,Liao, Xiaoyong,Li, You,Liu, Qiongzhi,&Luo, Junpeng.(2022).Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway.FRONTIERS IN ENVIRONMENTAL SCIENCE,10,10.
MLA Li, Haonan,et al."Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway".FRONTIERS IN ENVIRONMENTAL SCIENCE 10(2022):10.

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来源：地理科学与资源研究所

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