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NanoWet continues the study of aerosol emissions from the incineration of wastes containing nanomaterials and their treatment

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After the success of the NanoFlueGas programme, Mines Nantes through its joint research centre with ARMINES Energy Systems and Environment – the GEPEA laboratory (UMR 6144), INERIS, and TREDI are entering a new phase in the study of nanowaste incineration. Jointly funded by the ADEME (French Environment and Energy Management Agency), the NanoWet programme is interested in the treatment of nanowastes in what is known as High Temperature Incineration (1100°C). As well as looking at the effects of high temperatures on aerosol emmissions, it will look at potential interactions between the nanowastes and organohalogen wastes and sulphurs assigned to treatment facilities.

Nanoparticles or nanomaterials, with different shapes and features, are used in most sectors of activity : the food industry, building and construction, the chemical and agrochemical industries, cosmetics, electronics, materials, health, textiles, and even transport. In 2013, the Wilson Centre compiled a list of 1628 nanoproducts or nanotechnology-based consumer products, which showed an increase of 24 % since the last update in 2010. Today France produces 274 667 tonnes of substances containing nanoparticles and imports 122 464 tonnes of them.

 

Better assessment, management and safety of waste containing nanoparticles

 

« Although the figures are steadily increasing, studies of consumer products at the end of their life cycle are rare, as is research into the behaviour of nanoparticulate fraction from incinerators. » explains Laurence Le Coq, head of research. In fact there are no current regulations on incinerator emissions, either French or European, which deal specifically with the management of nanoparticle waste in manufacturing, usage, or end of life. » The École des Mines de Nantes GEPEA laboratory, in association with INERIS and TREDI (a division of the Séché Environment group), decided to move forward with the work carried out in 2011 as part of the NanoFlueGas project and an ADEME thesis, in order to complete the initial results which showed that variations in the incineration temperature and the airflow can modify the particle emissions, in particular the nanoparticles at the furnace exit.

 

NanoWet will study the interaction of nanoparticles with other industrial waste

 

«The NanoWet project is looking at the treatment of nanowaste in « High Temperature Incineration » used for disposing of organohalogen compounds and sulphur contaminated wastes. The objective is to understand the effect of high temperatures (1100°C) at the afterburner stage, on the releasing of nanoparticles contained in the nanowaste, and on their behaviour in flue gas containing halogen or sulphuric acids», highlights Aurélie Joubert, lecturer in the Energy Systems and Environmental Engineering Department.

The work will also focus on measuring the effectiveness of equipment used in wet flue gas treatment to remove nanoparticles, and to draw up recommendations for nanowaste treatment by incineration, in order to reduce the risks for health and for the environment.

NanoFlueGas programme

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