NDLI: Optimal conditions for oxidative degradation of bisphenol A by Horseradish Peroxidase in aqueous phase

Content Provider	IEEE Xplore Digital Library
Author	Li Hongmei Nicell, J.A.
Copyright Year	2011
Description	Author affiliation: Department of Civil Engineering and Applied Mechanics, McGill University, 817 Sherbrooke Street West, Montreal, Quebec, H3A 2K6, Canada (Nicell, J.A.) \|\| School of Safety and Environment Engineering, Capital University of Economics and Business, Beijing, 100026, China (Li Hongmei)
Abstract	Conditions for Horseradish Peroxidase (HRP) catalyzed oxidative degradation of bisphenol A (BPA) in wastewater were investigated in this research. The optimal pH and temperature for the oxidation of BPA catalyzed by HRP were pH 9.0 and 25°C respectively. The actual stochiometry for the complete conversion of BPA was [H2O2]/[BPA] molar ratio of 1.5, higher than theoretic stochiometry of 0.5 for this reaction. The probable explanation for this was that the degradation products, such as 4-isopropenylphenol and dimmer formed during the oxidation of BPA, could be oxidized by H2O2, which contributed to the total consumption of H2O2 for oxidation of BPA. The excessive initial H2O2 made HRP inactivity, which decreased the oxidation rate of BPA. In the primary reaction period, about 3 hours, the reaction was very quick at the certain level of HRP in the mixture. Near 80% of BPA was degraded in 3 h reaction period. But only 13.1% of original activity of HRP was kept after 5h reaction. It is necessary that further research be conducted to explore the possible method to keep the activity of HRP after finishing catalytic action for certain reaction.
Starting Page	5442
Ending Page	5446
File Size	202058
Page Count	5
File Format	PDF
ISBN	9781612847719
e-ISBN	9781612847740
DOI	10.1109/ICMT.2011.6002753
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Degradation Bisphenol A Oxidative degradation Media Horseradish peroxidase Oxidation Biochemistry Water pollution Polymers Substrates Aqueous phase
Content Type	Text
Resource Type	Article

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