Comparing the effects of types of electrode on the removal of multiple pharmaceuticals from water by electrochemical methods

Yu Jung Liu, Yung Ling Huang, Shang Lien Lo, Ching Yao Hu

研究成果: 雜誌貢獻文章同行評審

1 引文 斯高帕斯(Scopus)

摘要

Considering the lack of information on simultaneously removing multiple pharmaceuticals from water or wastewater by electrochemical methods, this study aimed to investigate the removal of multiple pharmaceuticals by electro-coagulation and electro-oxidation based on two types of electrodes (aluminum and graphite). The synthetic wastewater contained a nonsteroidal anti-inflammatory drug (diclofenac), a sulfonamide antibiotic (sulfamethoxazole) and a ß-blocker (atenolol). The pharmaceutical removal with electro-oxidation was much higher than those with the electro-coagulation process, which was obtained from a five-cell graphite electrode system, while the removal of pharmaceuticals with aluminum electrodes was about 20% (20 μM). In the electro-coagulation system, pharmaceutical removal was mainly influenced by the solubility or hydrophilicity of the compound. In the electro-oxidation system, the removal mechanism was influenced by the dissociation status of the compounds, which are attracted to the anode due to electrostatic forces and have a higher mass transformation rate with the electro-oxidation process. Therefore, atenolol, which was undissociated, cannot adequately be eliminated by electro-oxidation, unless the electrode's surface is large enough to increase the mass diffusion rate.

原文英語
文章編號3425
期刊Water (Switzerland)
12
發行號9
DOIs
出版狀態已發佈 - 九月 2020

ASJC Scopus subject areas

  • 生物化學
  • 地理、規劃與發展
  • 海洋科學
  • 水科學與技術

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