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Remediation of pharmaceutical wastewater by sequential adsorption-Catalytic wet air oxidation on activated carbons

Delmas, Henri and Jauregui-Haza, Ulises J. and Julcour-Lebigue, Carine and Quesada-Peñate, Isariebel and Wilhelm, Anne-Marie Remediation of pharmaceutical wastewater by sequential adsorption-Catalytic wet air oxidation on activated carbons. (2009) In: 2nd International Congress on Green Process Engineering,2nd European Process Intensification Conference, 14-17 June 2009, Venise, Italie .

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Abstract

Abstract. The catalytic wet air oxidation (CWAO) of paracetamol on activated carbon was investigated both in an autoclave reactor and in a fixed bed column as a regenerative treatment of carbon after adsorption (sequential adsorption-oxidation process ADOX). Three activated carbons (ACs) from different source materials were used as catalysts: two microporous basic ACs (S23 and C1) and a meso- and micro-porous acidic one (L27). During the first CWAO experiment the adsorption capacity and catalytic performance of fresh S23 and C1 were higher than those of fresh L27 despite its higher surface area. This situation changed after AC reuse, as finally L27 gave the best results after five CWAO cycles. L27 also showed better oxidation performances and regeneration efficiency in the ADOX process, which could be explained by its physico-chemical properties. Finally, respirometry tests with activated sludge revealed that in the studied conditions the use of CWAO enhanced the aerobic biodegradability of reaction effluent.

Item Type:Conference or Workshop Item (Speech)
Additional Information:This article is available on the CDrom: Proceedings 14-17 June 2009, Venice-Italy.
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Instituto Superior de Tecnologias y Ciencias Aplicadas - InSTEC (CUBA)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS)
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Deposited By: Guylène Abadie

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