Effect of UV light on pentachlorophenol removal in the electro- Fenton process
Journal Title: UNKNOWN - Year 2017, Vol 4, Issue 4
Abstract
Background: This research studied the effect of UV light on pentachlorophenol (PCP) removal in the electro-Fenton (EF) process. Methods: PCP was used as the pollutant in this study. The effects of Fenton’s reagent, i.e. hydrogen peroxide concentration, solution pH, and treatment time by EF (EF) and photoelectro-Fenton (PEF) processes, were studied to determine rates of PCP removal. The results showed that a better performance and a high removal efficiency were achieved by coupling UV radiation and the EF process. Results: EF processes required more time to remove PCP, while after a reaction time of 10 minutes, the PEF achieved a removal efficiency of 90.4%; this value is higher than the maximum efficiency of the EF process (83.44% after 40 minutes). The kinetic mechanisms of both processes were examined and compared. The rate constants at optimum conditions were 0.0455 and 0.0579 min−1 for EF and PEF processes, respectively. Conclusion: Removal efficiency was obtained in the order of PEF > EF.
Authors and Affiliations
Nematollah Jaafarzadeh
Keywords
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- EP ID EP283491
- DOI 10.15171/EHEM.2017.28
- Views 129
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