Degradation of florfenicol in water by UV/Na2S2O8 process

Yu qiong Gao, Nai yun Gao, Yang Deng, Da qiang Yin, Yan sen Zhang

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

UV irradiation-activated sodium persulfate (UV/PS) was studied to degrade florfenicol (FLO), a phenicol antibiotic commonly used in aquaculture, in water. Compared with UV/H2O2 process, UV/PS process achieves a higher FLO degradation efficiency, greater mineralization, and less cost. The quantum yield for direct photolysis of FLO and the second-order rate constant of FLO with sulfate radicals were determined. The effects of various factors, namely PS concentration, anions (NO3 , Cl, and HCO3 ), ferrous ion, and humic acid (HA), on FLO degradation were investigated. The results showed that the pseudo-first-order rate constant increased linearly with increased PS concentration. The tested anions all adversely affected FLO degradation performance with the order of HCO3 > Cl > NO3 . Coexisting ferrous ions enhanced FLO degradation at a Fe2+/PS molar ratio under 1:1. HA significantly inhibited FLO degradation due to radical scavenging and light-screening effect. Toxicity assessment showed that it is capable of controlling the toxicity for FLO degradation. These findings indicated that UV/PS is a promising technology for water polluted by antibiotics, and the treatment is optimized only after the impacts of water characteristics are carefully considered.

Original languageEnglish
Pages (from-to)8693-8701
Number of pages9
JournalEnvironmental Science and Pollution Research
Volume22
Issue number11
DOIs
StatePublished - 26 Jun 2015

Fingerprint

Degradation
degradation
Water
Antibiotics
antibiotics
water
humic acid
Toxicity
Humic Substances
anion
Rate constants
Negative ions
toxicity
Aquaculture
Anions
ion
Scavenging
Photolysis
Ions
Quantum yield

Keywords

  • Degradation
  • Florfenicol
  • Influence factor
  • Toxicity
  • UV/PS process

Cite this

Gao, Yu qiong ; Gao, Nai yun ; Deng, Yang ; Yin, Da qiang ; Zhang, Yan sen. / Degradation of florfenicol in water by UV/Na2S2O8 process. In: Environmental Science and Pollution Research. 2015 ; Vol. 22, No. 11. pp. 8693-8701.
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Degradation of florfenicol in water by UV/Na2S2O8 process. / Gao, Yu qiong; Gao, Nai yun; Deng, Yang; Yin, Da qiang; Zhang, Yan sen.

In: Environmental Science and Pollution Research, Vol. 22, No. 11, 26.06.2015, p. 8693-8701.

Research output: Contribution to journalArticle

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