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Desorption experiments and modeling of micropollutants on activated carbon in water phase: application to transient concentrations mitigation

Bourneuf, Séda and Jacob, Matthieu and Albasi, Claire and Sochard, Sabine and Richard, Romain and Manero, Marie-Hélène Desorption experiments and modeling of micropollutants on activated carbon in water phase: application to transient concentrations mitigation. (2016) International Journal of Environmental Science and Technology, vol.13 (n°1). pp.1-10. ISSN 1735-1472

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Official URL: http://dx.doi.org/10.1007/s13762-015-0834-x

Abstract

Experimental studies and numerical modeling were conducted to assess the feasibility of a granular activated carbon column to buffer load variations of contaminants before wastewater treatment devices. Studies of cycles of adsorption, and more especially desorption, of methyldiethanolamine (MDEA) and 2,4-dimethylphenol (2,4-DMP) have been carried out on granular activated carbon (GAC). Dynamic variations of contaminants concentrations were run at several conditions of duration (peaks). GAC fixed-bed exhibited a stable adsorption/desorption capacity after undergoing two conditioning cycles. The study of pollution peaks revealed that attenuation is largely dependent on the targeted pollutant: 2.4 ± 0.5 % attenuation/cm of bed for MDEA and 6.0 ± 1.2 % attenuation/cm of bed for 2,4-DMP. Mass balances calculated from both injected and recovered pollutant during peaks were respected. Finally, a coupling of the linear driving force model and isotherms models was used to fit experimental data for both adsorption breakthrough curves and desorption curves. The model was used to predict adsorption and desorption behaviors of following cycles. Good agreement with experimental values was obtained.

Item Type:Article
Additional Information:Thanks to Springer editor. The definitive version is available at http://www.springer.com The original PDF of the article can be found at the International Journal of Environmental Science and Technology website : http://link.springer.com/journal/13762
HAL Id:hal-01264371
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Total (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
Laboratory name:
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Deposited By: Romain RICHARD
Deposited On:13 Jan 2016 09:41

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