Efficient degradation of an antibiotic norfloxacin in aqueous solution via a simulated solar-light-mediated Bi 2WO 6 process

Meijuan Chen, Wei Chu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

57 Citations (Scopus)

Abstract

A simulated solar-light-mediated bismuth tungstate process (SSL/Bi 2WO 6) was employed to degrade norfloxacin photocatalytically. The effects of environmental parameters, including catalyst dosage, probe concentration, and solution pH, on the process performance were investigated systematically. Under weak alkaline conditions, an optimal decay performance that can be attributed to the beneficial effect of hydroxyl ions was obtained. The reaction rationale and related constants were determined by the Langmuir-Hinshelwood (LH) model, combined with the experimental results. Our results showed that the adsorption of norfloxacin onto Bi 2WO 6 benefited the SSL/Bi 2WO 6 process, and the Bi 2WO 6 maximum adsorption capacity was 3.20× 10 -3 mmol/g. In the SSL/Bi 2WO 6 process, the degradation of norfloxacin was accompanied by the decomposition of germicidal group and benzene ring, as well as gradual generation of inorganic ions of NH 4+ and F -. Furthermore, the toxicity of initial norfloxacin solution was efficiently eliminated by this SSL/Bi 2WO 6 process.
Original languageEnglish
Pages (from-to)4887-4893
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume51
Issue number13
DOIs
Publication statusPublished - 4 Apr 2012

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

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