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Author:

Li, Yaohong (Li, Yaohong.) | Yan, Zihao (Yan, Zihao.) | Sun, Zhirong (Sun, Zhirong.) (Scholars:孙治荣)

Indexed by:

EI Scopus SCIE

Abstract:

In this study, CuAl-LDH precursor was loaded on heat-treated graphite felt (HGF) to obtain CuAl-LDH/HGF. Then, the CuAl-LDO/HGF composite electrode was synthesized by calcination under a high-temperature nitrogen atmosphere. CuAl-LDO/HGF composite electrodes were used to remove sulfamethoxazole (SMX) in a heterogeneous electro-Fenton (hetero-EF) system. Both the hydrophilicity and redox capacity of CuAl-LDO/HGF composite cathode were significantly improved, and the SMX removal effect of CuAl-LDO/HGF in the hetero-EF system was superior to that of HGF. After the preparation conditions and reaction factors were optimized, SMX was completely eliminated within 60 min using the hetero-EF system under nearly-neutral conditions. 69.33% of the total organic carbon (TOC) was removed from the solution after 6 h of reaction. The SMX removal efficiency approached 94.4% after eight reuse cycles. Radical quenching experiments showed that surface hydroxyl radicals (& BULL;OH) were crucial to the degradation of SMX in this hetero-EF system. The biological toxicity of SMX and the products generated during its degradation were assessed, and the probable SMX degradation mechanism was also discussed. This work provides a feasible new insight for hetero-EF systems to remove antibiotics from wastewater.

Keyword:

Heterogeneous electro-Fenton Sulfamethoxazole Graphite felt Layered bimetallic oxides Degradation mechanism

Author Community:

  • [ 1 ] [Li, Yaohong]Beijing Univ Technol, Fac Environm & Life, Dept Environm Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Yan, Zihao]Beijing Univ Technol, Fac Environm & Life, Dept Environm Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Sun, Zhirong]Beijing Univ Technol, Fac Environm & Life, Dept Environm Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Yaohong]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 5 ] [Yan, Zihao]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 6 ] [Sun, Zhirong]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China

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Source :

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

ISSN: 2213-2929

Year: 2023

Issue: 3

Volume: 11

7 . 7 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 11

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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