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Optimization of the Fenton treatment of 1,4-dioxane and on-line FTIR monitoring of the reaction

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Merayo Cuevas, Noemí and Hermosilla Redondo, Daphne and Cortijo, Luis and Blanco Suárez, Ángeles (2014) Optimization of the Fenton treatment of 1,4-dioxane and on-line FTIR monitoring of the reaction. Journal of Hazardous Materials, 268 . pp. 102-109. ISSN 0304-3894

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Official URL: http://www.sciencedirect.com/science/article/pii/S0304389414000211



Abstract

1,4-dioxane is a non-biodegradable, toxic, hazardous, and priority pollutant widely used in the chemical industry as a solvent; as well as it is a resulting by-product of many industrial processes. The optimization of the Fenton treatment of 1,4-dioxane, and the on-line FTIR monitoring of its degradation route, including the assessment of the enhancement of the 6 biodegradability of the solution along treatment are herein addressed. Besides the full removal of 1,4-dioxane, an 80% reduction of the chemical oxygen demand (COD) was achieved at the best tested treatment conditions. Whether the used concentration of H2O2 was expectedly addressed as the reaction factor most influencing the achieved COD removal at the end of the process; the performance of the treatment under acid pH conditions showed to have just a slight influence, thus supporting this process may suitably be performed at neutral pH value. On-line FTIR monitoring of the process novelly provided the degradation route of 1,4-dioxane along its oxidation treatment, as well as a comprehensive optimization of the Fenton process based on the increase of the biodegradability of the solution and the reduction of the consumption of reagents.


Item Type:Article
Uncontrolled Keywords:Advanced oxidation processes; Fenton method; FTIR; on-line reaction monitorization; 1,4-dioxane oxidation.
Subjects:Sciences > Chemistry > Water
Sciences > Chemistry > Chemical engineering
ID Code:29266
Deposited On:23 Mar 2015 12:51
Last Modified:15 Mar 2016 00:01

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