期刊
CHEMOSPHERE
卷 93, 期 11, 页码 2805-2813出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2013.09.056
关键词
Electro-Fenton; Alizarin Red S (ARS); Excitation-emission matrix (EEM); UV-vis adsorption
资金
- National Natural Science Foundation of China [21207094]
- China Postdoctoral Science Foundation Special Funded Project [2013T60854]
- Special S&T Project on Treatment and Control of Water Pollution [2012ZX07201-005]
- Open Project of State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology [QA201320]
- State Key Laboratory of Urban Water Resource and Environment (Harbin institute of Technology) [2012TS01]
Oxidative degradation of Alizarin Red S (ARS) in aqueous solutions by using electro-Fenton was studied. At first, effect of operating parameters such as current density, aeration rate and initial pH on the degradation of ARS were studied by using UV-vis spectrum, respectively. Then, under the optimal operating conditions (current density: 10.0 mA cm(-2), aeration rate: 1000 mL min(-1), initial pH: 2.8), the identification of degradation products of ARS was carried out by using GC-MS and HPLC, meanwhile its degradation pathway was proposed according to the intermediates. Considering the location, intensity and intensity ratio of fluorescence center peak of the ARS in aqueous solution, a convenient and quick monitoring method by using excitation-emission matrix fluorescence spectrum technology was developed to monitor the degradation degree of ARS through electro-Fenton process. Furthermore, it is suggested that the developed method would be promising for the quick analysis and evaluation of the degradation degree of the pollutants with pi-conjugated system. (C) 2013 Elsevier Ltd. All rights reserved.
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