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Accueil > Séminaires et conférences > Séminaires, soutenances de thèses et HDR précédents > 2017 > Séminaires 2017 > Le mercredi 5 Avril à 10h30

Le mercredi 5 Avril à 10h30

Chedly Tizaoui, College of Engineering, Bay Campus, Swansea University, Swansea SA1 8EN, United Kingdom

Titre/title : Advanced Oxidation Processes and Non-Thermal Plasma for Water Treatment
Quand/When : Mercredi 5 Avril à 10h30
Lieu/Where : Salle de conférence CPHT ex-LIX

Résumé :
In recent years concerns have grown over the occurrence in water bodies of trace contaminants which have endocrine disrupting properties. Endocrine disruption occurs when there is an interaction of endocrine disruptors with hormone receptors causing a change in natural patterns of response of the endocrine system. Wastewater effluent is one of the major sources of EDCs in the natural water ; this is because conventional wastewater treatment plants were not designed to specifically remove substances that cause endocrine disruption. Other sources of estrogens include for example run off from livestock farmlands, septic tank systems, industrial discharges, and firefighting runoffs. Albeit being found at low concentrations, estrogens have been detected in spring water from some aquifers indirectly recharged with wastewater through irrigation practices or animal husbandry. The presence of EDCs in treated wastewater is of great concern due to the potential harmful environmental and human health effects EDCs cause. Their removal from wastewater is hence very important in order to recover and reuse the wastewater in applications such as irrigation, aquifer recharge or safe release into surface waters.

Advanced Oxidation Processes (AOPs) are gaining significant interest from the research community and industry as successful treatment technologies with merit to address the EDCs issue. AOPs are those processes that produce hydroxyl radicals in significant amounts that affect water treatment and in this context they refer to a specific subset of processes based on ozone, hydrogen peroxide or UV. The hydroxyl radicals produced by AOPs react with and destroy a wide range of organic and inorganic contaminants even those which are difficult to degrade biologically. This seminar will summarise research carried out by our group in the removal of EDCs using AOPs and discusses the application of non-thermal plasma in this area. Particular focus will be given to the degradation rates of the studied substances and the effect of the operating conditions on their removal. Data presented will be useful to evaluate the proposed treatment techniques as means to treat wastewater in a sustainable fashion.

Biography

Dr Chedly Tizaoui is an Associate Professor of Chemical Engineering at Swansea University, United Kingdom. He has a wide research interest in the area of Advanced Oxidation Processes including ozonation, UV radiation, non-thermal plasma, photocatalysis, and other catalytic processes as means to eradicate contaminants in water and wastewater treatment. His research also spans over a range of physical treatment processes including membranes and filtration and he has recently been working on the development of novel non-thermal plasma reactors for water treatment and hybrid AOPs/membrane systems. Over the past six years, he has been the Director of the Chemical and Environmental Engineering programmes at Swansea University, he is a Fellow of the UK Institution of Chemical Engineers (FIChemE) and is a Fellow of the UK Higher Education Academy (FHEA).


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Tutelles : CNRS Ecole Polytechnique Sorbonne Université Université Paris Sud Observatoire de Paris Convention : CEA
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Hébergeur : Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Directeur de la publication : Pascal Chabert (Directeur)