NDLI: Degradation of Diuron by Electrochemically Activated Persulfate

Content Provider	Springer Nature Link
Author	Yu, Yanghai Zhou, Shiqing Bu, Lingjun Shi, Zhou Zhu, Shumin
Copyright Year	2016
Abstract	An electrochemically activated persulfate (EC/PS) system was proposed for the degradation of herbicide diuron in this study. In the EC/PS system, the ferrous ions (Fe$^{2+}$) produced from iron electrode can activate persulfate to generate sulfate radical (SO$_{4}$ $^{·-}$) as well as hydroxyl radical (OH$^{•}$). The results showed that the degradation of diuron was significantly enhanced in the EC/PS system, compared to electrocoagulation, persulfate, and Fe$^{2+}$/PS process. Both of SO$_{4}$ $^{·-}$ and OH$^{·}$ contributed to the degradation of diuron in the EC/PS system according to the radical scavenging studies. The pseudo first-order rate constants of diuron increased with increasing the applied currents and dosages of persulfate. pH affected the degradation of diuron indirectly through the speciation of iron and resulted in higher removal efficiency in acidic condition than in alkaline condition. Chloride, carbonate, and bicarbonate in real water inhibited the degradation of diuron dramatically through consuming SO$_{4}$ $^{·-}$ and OH$^{·}$ and abided by the order of CO$_{3}$ $^{2−}$>HCO$_{3}$ $^{−}$>Cl$^{−}$. This study demonstrates that the EC/PS system is a novel, efficient, promising, and environmental-friendly method to treat diuron contamination.
Starting Page	1
Ending Page	9
Page Count	9
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	227
Issue Number	8
e-ISSN	15732932
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-07-21
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Diuron Sulfate radical Electrochemistry Ferrous Environment Water Quality/Water Pollution Atmospheric Protection/Air Quality Control/Air Pollution Soil Science & Conservation Hydrogeology Climate Change/Climate Change Impacts
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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