Acetaminophen degradation by electro-Fenton and photoelectro-Fenton using a double cathode electrochemical cell

doi:10.1016/j.jhazmat.2012.03.018

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標題:	Acetaminophen degradation by electro-Fenton and photoelectro-Fenton using a double cathode electrochemical cell
作者:	de Luna, Mark Daniel G. Veciana, Mersabel L. Su, Chia-Chi Lu, Ming-Chun
貢獻者:	環境工程與科學系
關鍵字:	Acetaminophen Electro-Fenton Process Photoelectro-Fenton Process Degradation
日期:	2012-05-30
上傳時間:	2014-03-21 16:16:23 (UTC+8)
出版者:	Elsevier Science Bv
摘要:	Acetaminophen is a widely used drug worldwide and is one of the most frequently detected in bodies of water making it a high priority trace pollutant. This study investigated the applicability of the electro-Fenton and photoelectro-Fenton processes using a double cathode electrochemical cell in the treatment of acetaminophen containing wastewater. The Box-Behnken design was used to determine the effects of initial Fe2+ and H2O2 concentrations and applied current density. Results showed that all parameters positively affected the degradation efficiency of acetaminophen with the initial Fe2+ concentration being the most significant parameter for both processes. The acetaminophen removal efficiency for electro-Fenton was 98% and chemical oxygen demand (COD) removal of 43% while a 97% acetaminophen removal and 42% COD removal were observed for the photoelectro-Fenton method operated at optimum conditions. The electro-Fenton process was only able to obtain 19% total organic carbon (TOC) removal while the photoelectro-Fenton process obtained 20%. Due to negligible difference between the treatment efficiencies of the two processes, the electro-Fenton method was proven to be more economically advantageous. The models obtained from the study were applicable to a wide range of acetaminophen concentrations and can be used in scale-ups. Thirteen different types of intermediates were identified and a degradation pathway was proposed. (C) 2012 Elsevier B.V. All rights reserved.
關聯:	Journal of Hazardous Materials, 217-218, 200-207
显示于类别:	[環境工程與科學系(所)] 期刊論文

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