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Effect of pH and temperature on degradation of dilute dihydroxybenzene, in aqueous titanium dioxide suspension irradiated by UV light

Paper ID Volume ID Publish Year Pages File Format Full-Text
29017 44112 2008 5 PDF Available
Title
Effect of pH and temperature on degradation of dilute dihydroxybenzene, in aqueous titanium dioxide suspension irradiated by UV light
Abstract

The degradation of p-dihydroxybenzene in a batch photocatalytic reactor, irradiated by a high intensity UV lamp, was investigated. In this experimental work, commercial anatase titanium dioxide (degussa P 25) was used as a catalyst. Various operating conditions such as initial concentration, pH of the solution, temperature, addition of H2O2, bubbling of oxygen, and catalyst loading were examined. A pseudo-first-order kinetics was observed with a rate constant ranging between 17.1 × 10−3 and 5.6 × 10−3 min−1 which was decreasing with increasing initial concentration. H2O2 enhanced the degradation significantly. For the experimental conditions, there was no significant effect for the added catalyst dosage. The degradation rate of p-dihydroxybenzene increased to a certain amount with increasing temperature then decreased. Further experimentation is needed to verify this observation.

Keywords
Hydroquinone; Photocatalytic; Anatase; Oxidation; Wastewater
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Effect of pH and temperature on degradation of dilute dihydroxybenzene, in aqueous titanium dioxide suspension irradiated by UV light
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 200, Issues 2–3, 15 December 2008, Pages 421–425
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
You save - $31
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