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作者:

Yuan, Xuehong (Yuan, Xuehong.) | Yu, Shuntao (Yu, Shuntao.) | Liu, Yiwei (Liu, Yiwei.) | Zhang, Xinfei (Zhang, Xinfei.) | Zhang, Sai (Zhang, Sai.) | Xue, Nandong (Xue, Nandong.) | Hu, Xiaojun (Hu, Xiaojun.)

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摘要:

Tetrabromobisphenol A (TBBPA) that widely exists in soil and poses a potential threat to ecological environment urgently needs economically efficient remediation techniques. This study utilized both homogeneous Fe2+ solution and heterogeneous iron -based nanomaterials (chemically synthesized nano zero -valence iron (nZVI) and green -synthesized iron nanoparticles (G -Fe NPs)) to activate persulfate (PS) and assess their efficacy in degrading TBBPA in soil. The results demonstrate the superior performance of heterogeneous catalytic systems (WG-Fe NPs/PS (82.07%) and WnZVI/PS (78.32%)) over homogeneous catalytic system (WFe /PS (71.69%)), In addition, G -Fe NPs 2+ and nZVI effectively controlled the slow release of Fe2+. The optimization analysis using response surface methodology (RSM) reveal the remarkable significance of the experimental model based on the box-behnken design. RSM show that G -Fe NPs/PS exhibited optimal process parameters and predicted the maximum soil TBBPA degradation efficiency reaching 98.77%. The results of density functional theory calculations suggest that C-Br are the primary targets for electrophilic substitution reactions. Based on the f0 value and oG, the degradation pathway of TBBPA is inferred to involve a sequential debromination process, followed by the cleavage of intermediate carbon -carbon bonds and subsequent oxidation reactions. Hence, G -Fe NPs/PS not only facilitate waste resource utilization but also hold significant application potential.

关键词:

Density functional theory (DFT) Iron nanoparticles Green synthesis Persulfate (PS) Tetrabromobisphenol A (TBBPA) Response surface methodology (RSM)

作者机构:

  • [ 1 ] [Yuan, Xuehong]Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China
  • [ 2 ] [Liu, Yiwei]Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China
  • [ 3 ] [Hu, Xiaojun]Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China
  • [ 4 ] [Yu, Shuntao]Minist Ecol & Environm, Tech Ctr Soil Agr & Rural Ecol & Environm, Beijing 100012, Peoples R China
  • [ 5 ] [Xue, Nandong]Minist Ecol & Environm, Tech Ctr Soil Agr & Rural Ecol & Environm, Beijing 100012, Peoples R China
  • [ 6 ] [Zhang, Xinfei]Guangdong Univ Technol, Sch Ecol Environm & Resources, Guangdong Prov Key Lab Water Qual Improvement & Ec, Guangzhou 510006, Peoples R China
  • [ 7 ] [Zhang, Sai]Beijing Univ Technol, Fac Environm & Life, Beijing 100124, Peoples R China

通讯作者信息:

  • [Hu, Xiaojun]Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China;;[Xue, Nandong]Minist Ecol & Environm, Tech Ctr Soil Agr & Rural Ecol & Environm, Beijing 100012, Peoples R China

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来源 :

JOURNAL OF ENVIRONMENTAL MANAGEMENT

ISSN: 0301-4797

年份: 2024

卷: 354

8 . 7 0 0

JCR@2022

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