Photocatalytic Destruction of Fulvic Acids by Various Oxidants in a Reactor with Immobilized TiO2


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Abstract

Comparison of the efficiency of photocatalytic oxidation of aqueous solution of fulvic acids (TOC0—15.9–17.1 mg/dm3, pH0 6 ± 0.1) by oxygen of the air, hydrogen peroxide and ozone in a reactor containing a wide-porous ceramic block with immobilized TiO2 with the variation of the concentration of H2O2, feed rate of O3 and temperature showed advantages of photocatalytic ozonization and expediency of its use for deep destruction of natural organic substances in water. The maximum degree of destruction in photocatalytic systems O2/TiO2/UV, H2O2/TiO2/UV and O3/TiO2/UV constituted respectively 41, 73 and 90% for TOC for 5, 4 and 3 h.

About the authors

V. V. Goncharuk

Dumanskii Institute of Colloid and Water Chemistry

Email: vakulvera@ukr.net
Ukraine, Kiev

V. F. Vakulenko

Dumanskii Institute of Colloid and Water Chemistry

Author for correspondence.
Email: vakulvera@ukr.net
Ukraine, Kiev

Yu. O. Shvadchina

Dumanskii Institute of Colloid and Water Chemistry

Email: vakulvera@ukr.net
Ukraine, Kiev

A. N. Sova

Dumanskii Institute of Colloid and Water Chemistry

Email: vakulvera@ukr.net
Ukraine, Kiev

R. V. Prihod’ko

Dumanskii Institute of Colloid and Water Chemistry

Email: vakulvera@ukr.net
Ukraine, Kiev

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