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Study on ozonation mechanism of azo dyes pdf

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At 3 The ozonation of cationic red X-GRL azo dye was carried out in a 5 L semi sequencing batch reactor Qualitative analysis by GC / MS and GC half
The order and concentration change of the intermediates in the process of ozonation were determined by quantitative analysis, and the stoichiometry of the reaction between ozone and dye was carried out
The ratio, the decrease of pH and NO3
-The mechanism of the ozonation of dyes can be divided into three stages, namely, the shedding of the auxiliary color group, the most important stage
Large absorption peak purple shift stage; The decomposition of chromogenic groups and decolorization of dyes were carried out; The colorless intermediates were further degraded into organic acids, aldehydes, ketones and alkanes
Paragraph The conversion paths of six nitrogen atoms in dye molecules were determined, that is, four nitrogen atoms were converted into two molecules of N2, and the other two nitrogen atoms were converted into 1 minute
Organic nitrogen compounds and 1 molecule no-
3 . The ozone oxidation of dyes is mainly direct oxidation
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Mechanism of ozonation of azo dyes
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