DocumentCode
2021590
Title
Notice of Retraction
Study on photochemical degradation of oxytetracycline with UV-H2 O2 process
Author
Shaohua Lin ; Wei Chen ; Cheng Liu
Author_Institution
Coll. of Environ. Sci. & Eng., Hohai Univ., Nanjing, China
Volume
3
fYear
2010
fDate
17-18 July 2010
Firstpage
24
Lastpage
27
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
The photooxidation of oxytetracycline (OTC) was carried out in the presence of H2O2 using UV254. The effects of H2O2 dosage, initial OTC concentration, UV light power, pH have been studied. These parameters strongly influenced the degradation. The degradation of OTC in UV-H2O2 process was the combined effect of direct photolysis and the reaction of hydroxyl radicals. The kinetics of degradation followed pseudo-first order kinetics, and the increase of initial OTC concentration from 2.2 to 7.7 mg/l decreased removal rate. The optimal H2O2 concentration was 10 mg/l, and increase of UV power from 12 to 48 W increased the degradation reaction rate. The process was more efficient in acid (pH 5.5) and near neutral medium (pH 7.3) than in alkaline medium (pH 8.4).
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
The photooxidation of oxytetracycline (OTC) was carried out in the presence of H2O2 using UV254. The effects of H2O2 dosage, initial OTC concentration, UV light power, pH have been studied. These parameters strongly influenced the degradation. The degradation of OTC in UV-H2O2 process was the combined effect of direct photolysis and the reaction of hydroxyl radicals. The kinetics of degradation followed pseudo-first order kinetics, and the increase of initial OTC concentration from 2.2 to 7.7 mg/l decreased removal rate. The optimal H2O2 concentration was 10 mg/l, and increase of UV power from 12 to 48 W increased the degradation reaction rate. The process was more efficient in acid (pH 5.5) and near neutral medium (pH 7.3) than in alkaline medium (pH 8.4).
Keywords
environmental degradation; oxidation; photochemistry; water pollution; water treatment; H2O2; UV- process; degradation kinetics; hydroxyl radicals; oxytetracycline; photochemical degradation; photolysis; photooxidation; water pollution; Artificial neural networks; Biology; H2 O2 ; UV-radiation; oxytetracycline; photochemical oxidation;
fLanguage
English
Publisher
ieee
Conference_Titel
Environmental Science and Information Application Technology (ESIAT), 2010 International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-7387-8
Type
conf
DOI
10.1109/ESIAT.2010.5568939
Filename
5568939
Link To Document