Artículos de revistas
Reaction Of Dissolved Ozone In Hydrogen Peroxide Produced During Ozonization Of An Alkaline Medium In A Bubble Column [avaliação Do Efeito Da Reação De Ozônio Dissolvido Com Peróxido De Hidrogênio Gerado Durante A Ozonização De Meio Alcalino Em Uma Coluna De Borbulhamento]
Registro en:
Acta Scientiarum - Technology. , v. 36, n. 1, p. 81 - 85, 2014.
18062563
10.4025/actascitechnol.v36i1.11834
2-s2.0-84891336548
Autor
Cremasco M.A.
Mochi V.T.
Institución
Resumen
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. 36 1 81 85 Bin, A.K., Duczmal, B., Machniewski, P., Hydrodynamics and ozone mass transfer in a tall bubble column (2001) Chemical Engineering Science, 56 (21-22), pp. 6233-6240 Cheng, J., Yang, Z.R., Chen, H.Q., Kuo, C.H., Zappi, M.E., Simultaneous prediction of chemical mass transfer coefficients and rates for removal of organic pollutants in ozone absorption in an agitated semi-batch reactor (2003) Separation and Purification Technology, 31 (1), pp. 97-104 Glaze, W.H., Reaction products of ozone: A review (1986) Environmental Health Perspectives, 69, pp. 151-157 Kunz, A., Zamora, P.P., Moraes, S.G., Durán, N., Novas tendências no tratamento de efluentes têxteis (2002) Química Nova, 25 (1), pp. 78-82 Langlais, B., Reckhow, D.A., Brink, D.R., (1991) Ozone in water treatment: Application and engineering, , Chelsea: Lewis Publishers Inc Legrini, O., Oliveros, E., Braun, A.M., Photochemical processes for water treatment (1993) Chemical Reviews, 93 (2), pp. 671-678 Lin, S.H., Yeh, K., L. Looking to treat wastewater? Try ozone (1993) Chemical Engineering Science, 100 (5), pp. 112-116 Lucas, M.S., Peres, J.A., Lan, B.Y., Li Puma, G., Ozonation kinetics of winery wastewater in a pilot-scale Hubble column reactor (2009) Water Research, 43 (46), pp. 1523-1532 Von Gunten, U., Ozonation of drinking water: Part I. Oxidation kinetics and product formation (2003) Water Research, 37 (7), pp. 1443-1467