NDLI: Photoelectro-Fenton mineralization of phenol through optimization of ferrous regeneration

Content Provider	Springer Nature Link
Author	Shih, Yu Jen Su, Hsiao Ting Huang, Yao Hui
Copyright Year	2013
Abstract	The degradation of phenol in acidic solution at pH 3 has been investigated under various photo- and electrochemical conditions. A laboratory-scale reactor on which were mounted net electrodes (RuO$_{2}$/IrO$_{2}$-coated Ti anodes (DSA) and stainless steel cathodes) and 254 nm UV lamps was established to effectively reduce ferric reagents. The experimental results of the photoelectron-chemical reaction suggested that the current efficiency of reducing ferric ion was improved by increasing the number of electrodes used, and the UV lamps were important to inducing the reduction of ferric carboxylates, which were the major intermediates that were formed upon a particular degree of phenol oxidation. Accordingly, the addition of an initial concentration of 400 ppm ferrous salt and 10,200 ppm hydrogen peroxide (in a continuous mode) resulted in the removal of over 92 % of TOC (initial phenol = 2,000 ppm, TOC = 1,532 ppm) by 4 h of the photoelectro-Fenton and the sequential 2 h of the photo-Fenton processes. HPLC was utilized to monitor the formation of aromatic and carboxylate byproducts, and revealed that the aid of photo irradiation eliminated most of the oxalate residue from the final solution, which would have contributed to the 25 % of the TOC that was inactive in the electrolytic system.
Starting Page	6184
Ending Page	6190
Page Count	7
File Format	PDF
ISSN	09441344
Journal	Environmental Science and Pollution Research
Volume Number	20
Issue Number	9
e-ISSN	16147499
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-04-16
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	RuO$_{2}$/IrO$_{2}$ 254 nm UV Ferric carboxylate Intermediate Environment Environmental Chemistry Ecotoxicology Environmental Health Atmospheric Protection/Air Quality Control/Air Pollution Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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