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Homogeneous photocatalytic mineralization of acetic acid in an aqueous solution of iron ion

Paper ID Volume ID Publish Year Pages File Format Full-Text
47297 46466 2010 7 PDF Available
Title
Homogeneous photocatalytic mineralization of acetic acid in an aqueous solution of iron ion
Abstract

Homogeneous photocatalytic mineralization (decomposition to carbon dioxide (CO2)) of acetic acid in dilute aqueous solutions of various metal ions was examined at room temperature under irradiation of UV light in the presence of oxygen (O2). Iron ion exhibited a much higher level of activity among the metal ions studied for mineralization of acetic acid. The rate of CO2 formation was proportional to first-order partial pressure of O2 and concentrations of iron ion and acetic acid, whereas the rate was in inverse proportional to first-order proton concentration. The rate equation, r = k  PO2PO2 [[FeIII(H2O)6]3+] [AcOH] [H+]−1, in overall photocatalytic mineralization of acetic acid was derived from these results. The mechanism of the photocatalytic mineralization of acetic acid in an aqueous solution of ion was proposed.

Keywords
Photocatalyst; Mineralization; Acetic acid; Iron ion
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Homogeneous photocatalytic mineralization of acetic acid in an aqueous solution of iron ion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 97, Issues 1–2, 9 June 2010, Pages 213–219
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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