Effect of factors on decolorization of azo dye methyl orange by oxone/natural sunlight in aqueous solution |
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| Authors: | Qun Liu Zheng Zheng Xiaoying Yang Xingzhang Luo Jibiao Zhang Binguo Zheng |
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| Institution: | (1) State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, People’s Republic of China;(2) Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai, 200433, People’s Republic of China |
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| Abstract: | Purpose The oxone process for azo dye decolorization has drawbacks such as difficulties with reuse, risks of secondary pollution,
and high costs associated with UV irradiation. This study aims to explore the use of oxone for decolorization in the absence
of catalyst and under natural sunlight conditions (i.e., oxone/natural sunlight system) and evaluate the impacts of operating
parameters (reagent dosage, initial methyl orange (MO) concentration, and initial pH) and coexisting substances (humic acid,
NO3−, metal ions) on the system’s decolorization efficiency. |
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