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Photooxidation of phenol in aqueous nanodispersion of humic acid

Paper ID Volume ID Publish Year Pages File Format Full-Text
28903 44104 2007 8 PDF Available
Title
Photooxidation of phenol in aqueous nanodispersion of humic acid
Abstract

Photooxidation of phenol sensitized by Aldrich humic acid (AHA) has been studied in an aqueous solution at neutral and basic pH. Solutions containing phenol and AHA of various concentrations were irradiated with monochromatic light at 253.7 nm or with polychromatic light within the wavelength range of 310–420 nm. The quantum yields of phenol photodegradation under these conditions were determined. At the wavelength of 253.7 nm direct degradation of phenol was much more effective than that sensitized by AHA. With polychromatic light the photooxidation was found to be strongly dependent on pH of aqueous solution and independent on AHA concentration.

Keywords
Humic acids; Photooxidation; Singlet oxygen; PhenolAHA, Aldrich humic acid; HA, humic acid; HS, humic substances; PhOH, phenol; TMP, 2,4,6-trimethylphenol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 185, Issues 2–3, 25 January 2007, Pages 198–205
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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