Removal of organic contaminants in paper pulp treatment effluents by TiO<inf>2</inf> photocatalyzed oxidation

Montserrat Pérez; Francesc Torrades; José A. García-Hortal; Xavier Domènech; José Peral

doi:10.1016/S1010-6030(97)00146-9

Removal of organic contaminants in paper pulp treatment effluents by TiO<inf>2</inf> photocatalyzed oxidation

Montserrat Pérez, Francesc Torrades, José A. García-Hortal, Xavier Domènech, José Peral

Department of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

40 Citations (Scopus)

Abstract

TiO2 slurries under UV light irradiation were used for the oxidation and removal of the organic load of effluent from the bleaching of paper pulp. TOC was the main analytical parameter used to characterize the reaction progress, although COD, AOX and color also received periodic attention. Conditions such as the catalyst load, light intensity, pH, temperature, and concentration of O2 and organic matter were changed through several series of experiments in order to determine their effect. A zero order kinetics accounts for the observed variation of TOC with time during most of the reaction, the rate constant being 0.25-0.40 ppm min-1 at 25 °C. This behavior is explained in terms of a Langmuir-Hinshelwood rate equation in a highly substrate concentrated system.

Original language	English
Pages (from-to)	281-286
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	109
Issue number	3
DOIs	https://doi.org/10.1016/S1010-6030(97)00146-9
Publication status	Published - 30 Sep 1997

Keywords

Organic contaminants
Paper pulp

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title = "Removal of organic contaminants in paper pulp treatment effluents by TiO2 photocatalyzed oxidation",

abstract = "TiO2 slurries under UV light irradiation were used for the oxidation and removal of the organic load of effluent from the bleaching of paper pulp. TOC was the main analytical parameter used to characterize the reaction progress, although COD, AOX and color also received periodic attention. Conditions such as the catalyst load, light intensity, pH, temperature, and concentration of O2 and organic matter were changed through several series of experiments in order to determine their effect. A zero order kinetics accounts for the observed variation of TOC with time during most of the reaction, the rate constant being 0.25-0.40 ppm min-1 at 25 °C. This behavior is explained in terms of a Langmuir-Hinshelwood rate equation in a highly substrate concentrated system.",

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Removal of organic contaminants in paper pulp treatment effluents by TiO<inf>2</inf> photocatalyzed oxidation. / Pérez, Montserrat; Torrades, Francesc; García-Hortal, José A.; Domènech, Xavier ; Peral, José.

In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 109, No. 3, 30.09.1997, p. 281-286.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Removal of organic contaminants in paper pulp treatment effluents by TiO2 photocatalyzed oxidation

AU - Pérez, Montserrat

AU - Torrades, Francesc

AU - García-Hortal, José A.

AU - Domènech, Xavier

AU - Peral, José

PY - 1997/9/30

Y1 - 1997/9/30

N2 - TiO2 slurries under UV light irradiation were used for the oxidation and removal of the organic load of effluent from the bleaching of paper pulp. TOC was the main analytical parameter used to characterize the reaction progress, although COD, AOX and color also received periodic attention. Conditions such as the catalyst load, light intensity, pH, temperature, and concentration of O2 and organic matter were changed through several series of experiments in order to determine their effect. A zero order kinetics accounts for the observed variation of TOC with time during most of the reaction, the rate constant being 0.25-0.40 ppm min-1 at 25 °C. This behavior is explained in terms of a Langmuir-Hinshelwood rate equation in a highly substrate concentrated system.

AB - TiO2 slurries under UV light irradiation were used for the oxidation and removal of the organic load of effluent from the bleaching of paper pulp. TOC was the main analytical parameter used to characterize the reaction progress, although COD, AOX and color also received periodic attention. Conditions such as the catalyst load, light intensity, pH, temperature, and concentration of O2 and organic matter were changed through several series of experiments in order to determine their effect. A zero order kinetics accounts for the observed variation of TOC with time during most of the reaction, the rate constant being 0.25-0.40 ppm min-1 at 25 °C. This behavior is explained in terms of a Langmuir-Hinshelwood rate equation in a highly substrate concentrated system.

KW - Organic contaminants

KW - Paper pulp

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DO - 10.1016/S1010-6030(97)00146-9

M3 - Article

VL - 109

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EP - 286

JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

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