1. Degradation of Crystal Violet Dye by Fenton and Photo-Fenton Oxidation Processes.
- Author
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Rehman, Faiza, Sayed, Murtaza, Khan, Javed Ali, Shah, Luqman Ali, Shah, Noor S., Khan, Hasan M., and Khattak, Rozina
- Subjects
GENTIAN violet ,OXIDATION ,WATER purification - Abstract
The oxidative degradation of CV dye in aqueous media has been evaluated using Fenton (Fe
2+ /H2 O2 ) and photo-Fenton (Fe2+ /H2 O2 /UV) processes. Various operational parameters like H2 O2 dosages, Fe2+ dosages and [CV]0 were optimized of both Fenton and photo-Fenton processes for the removal of CV dye from aqueous media. Kinetic results indicated that photo-Fenton process (kobs =0.0097 min−1 , t1/2 =71.45 min) is more effective than Fenton process (kobs =0.0074 min−1 , t1/2 =93.66 min). Second order rate constant of ˙OH radical with CV dye was calculated to be 3.96×109 M−1 s−1 . De-methylated organic intermediates of CV dye detected by LC-MS and some other intermediates like CH3 COO− , HCOO− , NH4 + and Cl− were identified by ion-chromatography. [ABSTRACT FROM AUTHOR]- Published
- 2018
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