NDLI: Comparison on mineralization of 2,4,6-tribromophenol by UV-based advanced oxidation processes: UV/Na$_{2}$S$_{2}$O$_{8}$ and UV/H$_{2}$O$

Content Provider	Springer Nature Link
Author	Gu, Yong Chen, Ying Sun, Xianbo Liu, Yongdi
Copyright Year	2016
Abstract	Mineralization of 2,4,6-tribromophenol (TBP) in water by UV-based oxidation processes (AOPs) including UV/H$_{2}$O$_{2}$ and UV/Na$_{2}$S$_{2}$O$_{8}$ (UV/PS) was explored in this work. There was firstly systematically and comparatively an investigation of these two AOPs on the mineralization of TBP for toxicity change, mineralization efficiency and economic cost. The effects of oxidant concentration, initial TBP concentration and pH on TOC removal were investigated. The results indicated both UV-based oxidation systems had optimum oxidant concentration when the [oxidant]/[TBP] molar ratio reached 15/1. As TBP can absorb UV-254 nm, the initial TBP concentration can influence oxidant decomposition, and their mutual effects decide TOC removal efficiency. Raising pH from 3 to 11 inhibited the mineralization of TBP slightly in the UV/PS process while the mineralization rate reach its highest at pH 9 and decreased dramatically at pH 11. The effect of three inorganic ions on the efficiency of these UV-based AOPs was investigated, and the results were in the order NO 3 − > HCO 3 − > Cl$^{−}$. Toxicity tests with activated sludge showed that oxidation processes can effectively reduce the toxicity of TBP. BOD measurements also revealed that biodegradability improved with both oxidation processes while UV/PS performed better. According to the calculation of the two UV-based AOPs, UV/PS is the much more effective and economic way. However, the formation of BrO 3 − in the UV/PS system will limit its application in treating wastewater containing brominated organic pollutants.
Starting Page	3095
Ending Page	3110
Page Count	16
File Format	PDF
ISSN	09226168
Journal	Research on Chemical Intermediates
Volume Number	43
Issue Number	5
e-ISSN	15685675
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-11-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	TBP UV-C Hydrogen peroxide Persulfate Advanced oxidation process Mineralization Catalysis Physical Chemistry Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry

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