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Photodegradation of novel brominated flame retardants (NBFRs) in a liquid system: Kinetics and photoproducts
Ling, Siyuan1; Huang, Kai1; Tariq, Muhammad1; Wang, Yawen1; Chen, Xiao1; Zhang, Wei1,2; Lin, Kuangfei1; Zhou, Bingsheng3
2019-04-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume362Issue:1Pages:938-946
AbstractThe photolysis of four typical NBFRs decabromodiphenyl ethane (DBDPE), bis(2-ethylhexyl) tetrabromophthalate (TBPH), pentabromotoluene (PBT) and hexabromobenzene (HBB) were first explored under different sources of light, two temperatures, organic solvents and the presence of humic substance (HS). Degradation could be described by pseudo-first-order kinetic model. Under different irradiation sources, the degradation rates were in order of UVC (0.0616-0.137 min(-1)) > UVB (0.0348-0.0810 min(-1)) > sunlight (0.0102-0.0370 min(-1)) > UVA (almost no degradation). Under UVB irradiation, the half-life of NBFRs was the lowest in tetrahydrofuran (6.16-22.77 min), and the longest (93.42- > 120 min) in acetone, indicating that organic solvents greatly affected the degradation kinetics. HS could influence the degradation, and DBDPE or TBPH respectively declined 13.92-30.68% and 12.17-59.41% at 240 min, while the degradation of PBT and HBB were highly inhibited. TBPH photolysis was affected by humic acid (HA) or fulvic acid (FA) concentration, but DBDPE degradation barely showed significant difference (p < 0.05) in the presence of 1 and 10 mg L-1 of HA. Photolytic products of the four NBFRs were identified by GC-NCI/EI-MS, indicating that the photodegradation process was mainly stepwise debromination from high-down to low-bromine-substituted NBFRs. 2,4,6-triBT and 2,4,5-triBT were identified as products of PBT. PBB, 1,2,4,5-tetraBB, 1,2,4-triBB, 1,3,5-triBB and 1,3/1,2-diBB were identified as products of HBB. Our observations could provide a few insights into the removal of NBFRs in a liquid environment.
SubtypeArticle
KeywordNovel Brominated Flame Retardant Photolysis Kinetics Rate Coefficient Degradation Pathway
DOI10.1016/j.cej.2019.01.103
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China(21737005 ; Science and Technology Committee Research Program of Shanghai(17DZ1202304) ; 41877124) ; National Natural Science Foundation of China(21737005 ; Science and Technology Committee Research Program of Shanghai(17DZ1202304) ; 41877124)
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS KeywordPOLYBROMINATED DIPHENYL ETHERS ; PHOTOCHEMICAL DEGRADATION ; BIOACCUMULATION ; DECOMPOSITION ; CONGENERS
WOS IDWOS:000457863500094
Funding OrganizationNational Natural Science Foundation of China(21737005 ; Science and Technology Committee Research Program of Shanghai(17DZ1202304) ; 41877124) ; National Natural Science Foundation of China(21737005 ; Science and Technology Committee Research Program of Shanghai(17DZ1202304) ; 41877124)
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/72390
Collection水环境工程研究中心
Affiliation1.East China Univ Sci & Technol, Sch Resource & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China
2.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Ling, Siyuan,Huang, Kai,Tariq, Muhammad,et al. Photodegradation of novel brominated flame retardants (NBFRs) in a liquid system: Kinetics and photoproducts[J]. CHEMICAL ENGINEERING JOURNAL,2019,362(1):938-946.
APA Ling, Siyuan.,Huang, Kai.,Tariq, Muhammad.,Wang, Yawen.,Chen, Xiao.,...&Zhou, Bingsheng.(2019).Photodegradation of novel brominated flame retardants (NBFRs) in a liquid system: Kinetics and photoproducts.CHEMICAL ENGINEERING JOURNAL,362(1),938-946.
MLA Ling, Siyuan,et al."Photodegradation of novel brominated flame retardants (NBFRs) in a liquid system: Kinetics and photoproducts".CHEMICAL ENGINEERING JOURNAL 362.1(2019):938-946.
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