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Photo-Fenton degradation of resorcinol mediated by catalysts based on iron species supported on polymers

Paper ID Volume ID Publish Year Pages File Format Full-Text
27573 44030 2011 6 PDF Available
Title
Photo-Fenton degradation of resorcinol mediated by catalysts based on iron species supported on polymers
Abstract

Novel Fe supported catalysts were prepared by immobilizing iron species on commercial polyethylene via three different methods: (1) acidic pre-treatment of the polyethylene followed by impregnation in aqueous Fe(NO3)3, (2) TiO2 photo-catalytic pre-treatment of the polyethylene followed by forced hydrolysis of Fe(NO3)3, and (3) direct photo-Fenton attack with concomitant iron deposition on the polyethylene surface. The last method required soft conditions and led to the most photo-active Fe–polyethylene film. With this material, at a non-adjusted initial pH of 5.6 in the presence of H2O2, total degradation and 50% of resorcinol mineralization were observed in 40 and 60 min, respectively. Photo-Fenton functionalization/Fe-deposition process was also applied to polypropylene, high-impact polystyrene, and polymethylmethacrylate films. The efficiencies of all the prepared heterogeneous photo-catalysts were similar to that of an homogeneous photo-Fenton system containing the same amount of Fe3+/2+ that leached during “heterogeneous” processes. That demonstrated than in our systems mainly homogeneous photo-Fenton reactions were responsible for the resorcinol degradation. The photo-catalytic activity observed for the Fe/polymer was a function of the specific polymer capacity to release the initially deposited iron into the solution.

Keywords
Heterogeneous photo-catalysis; Photo-Fenton; Wastewater treatment; Iron-immobilized polymer
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Photo-Fenton degradation of resorcinol mediated by catalysts based on iron species supported on polymers
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 217, Issue 1, 1 January 2011, Pages 201–206
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
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