Reaction of dissolved ozone in hydrogen peroxide produced during ozonization of an alkaline medium in a bubble column - doi: 10.4025/actascitechnol.v36i1.11834

Marco Aurélio Cremasco; Vanessa Trevizan Mochi

doi:10.4025/actascitechnol.v36i1.11834

Reaction of dissolved ozone in hydrogen peroxide produced during ozonization of an alkaline medium in a bubble column - doi: 10.4025/actascitechnol.v36i1.11834

Authors

Marco Aurélio Cremasco Universidade Estadual de Campinas
Vanessa Trevizan Mochi Universidade Estadual de Campinas

DOI:

https://doi.org/10.4025/actascitechnol.v36i1.11834

Keywords:

ozone, bubbling column, hydrogen peroxide

Abstract

The effect of a reaction of dissolved ozone in an alkaline water solution with hydrogen peroxide was evaluated. Assays were conducted in a bubble column with a gaseous ozone concentration (mixed with oxygen) at 21 and 27 g m^-3. Concentration curve of dissolved ozone in the liquid revealed an ozone concentration peak in the liquid phase, subsequent decreasing concentration and constant maintenance in the stationary phase. Highest concentration was not detected for the lowest ozone concentration in the gaseous phase. Peak was due to the self-decomposition of ozone in the liquid phase and the production of hydrogen peroxide. The latter reacted with molecular dissolved ozone and decreased ozone concentration after maximum concentration.

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Author Biography

Marco Aurélio Cremasco, Universidade Estadual de Campinas

Possui graduação em Engenharia Quimica pela Universidade Estadual de Maringá (1984), mestrado em Engenharia Química pela Universidade Federal do Rio de Janeiro (1986), doutorado em Engenharia Mecânica pela Universidade Estadual de Campinas (1994), pós-doutorado em Engenharia Química (Purdue University-EUA). Livre-docente, é professor associado da Faculdade de Engenharia Química, Universidade Estadual de Campinas. Possui os livros "Fundamentos de transferência de massa" (Editora da Unicamp),"Vale a pena estudar engenharia química" (Editora Edgard Blí¼cher), bem como cerca de cem artigos completos publicados e cinco solicitações de patentes. Tem experiência em campos de Engenharia Química, com ênfase em Transferencia de Massa e Sistemas Particulados. Atua nas seguintes áreas: ensino; adsorção; secagem; tratamento de efluentes por ozonização; leitos fixo, de jorro, fluidizado, circulante; fluidodinâmica em riser e downer para aplicações em processos catalíticos.

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Published

2014-01-07

How to Cite

Cremasco, M. A., & Mochi, V. T. (2014). Reaction of dissolved ozone in hydrogen peroxide produced during ozonization of an alkaline medium in a bubble column - doi: 10.4025/actascitechnol.v36i1.11834. Acta Scientiarum. Technology, 36(1), 81–85. https://doi.org/10.4025/actascitechnol.v36i1.11834

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Issue

Vol. 36 No. 1 (2014)

Section

Chemical Engineering

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