Ozonation of pentylacetate contaminated waters from textile care industry
DOI:
https://doi.org/10.4067/S0718-28132013000100004Keywords:
ozone, pentylacetate, reaction kinetics, wastewater treatmentAbstract
In this article the use of ozone for the treatment of pentylacetate contaminated waters is evaluated. Pentylacetate has started to be used in the drycleaning process as a new solvent due to its economic benefits. However, in the technical literature experimental data involving pentylacetate ozonation has not yet been reported. This article presents experimental results on the effect ofpH on the rate ofpentyalcetate removal by ozonation of contaminated waters. At acid pH, pentylacetate is removed by a combination of single sparging and direct ozone reaction. As pH increases, the rate of pentylacetate removal also increases, showing the importance of free radical mechanism. The constant of indirect reaction rate for pentylacetate removal due to radicals is 2.6 x 109 M-1s-1.
References
Arslan, I., Akmehmet, I.B. and Bahnemann, D.W. (2002). Advanced oxidation of a reactive dyebath effluent: comparison of O3, H2O2/UV-C and TiO2/UV-A processes. Water Research 36, 1143-1154. https://doi.org/10.1016/S0043-1354(01)00335-9
DBU Deutschen Bundesstiftung Umwelt (2003). Projekt: Entwicklung eines Verfahrens und einer Reinungsmaschine zur Nassreinigung und Trocknung von Textilien.
EPA (1998). Cleaner technologies substitutes' assessment: professional fabricare processes. Design for the environment U.S. Environmental Protection Agency Ed. EPA 744-B-98-001.
Kurz, J., Gosolits, B. and Tagge, J. (2001). In ATV-Handbuch Industrieabwasser. Dienstleistungs- und Veredelungsindustrie. Chapter 13. Ernst & Sohn.
Hoigné, J. (1998). In Hrubec (ed.), The Handbook of Environmental Chemistry. Vol. 5. Part C. Quality and Treatment of Drinking Water II. Berlin: Springer-Verlag.
Hoigné, J. (1997). Inter-calibration of OH radical sources and water quality parameters. Water Science and Technology 35, 1-8. https://doi.org/10.1016/S0273-1223(97)00002-4
Sánchez-Polo, M., Rivera-Utrilla, J., Mondaca, M.A. and Zaror. C.A. (2002). Effect of ozone and ozone/activated carbon treatments on genotoxic activity of naphtalenesulfonic acids. Journal of Chemical Technology & Biotechnology 77, 883-890. https://doi.org/10.1002/jctb.655
Seo, G.T., Lee, T.S., Moon, B.H. and Lim. J.H. (2001). Ultrafiltration combined with ozone for domestic laundry wastewater reclamation and reuse. Water Science and Technology: Water Supply 1, 387-392. https://doi.org/10.2166/ws.2001.0138
Valdés, H., Zaror, C.A. and Jekel, M. (2003). Kinetic study of reactions between ozone and benzothiazole in water. Water Science and Technology 48, 505-510. https://doi.org/10.2166/wst.2004.0900
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