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Content archived on 2024-05-24

Development of a new wastes inerting technique for landfilling or valorisation


Storing dangerous wastes, both organic and heavy metals ones in landfills is the most current elimination method used in European Union but is very expensive for companies. The current waste storage technique consists in their incorporation in cement matrix : wastes are confined by a binder and then, removed to a landfill.. Many years later, a stabilisation problem unfortunately may occur for some wastes and the risk of releasing hazardous elements increase. To overcome this problem, only a weak incorporation ratio of wastes in chosen, leading to a dramatic increase the actual storage costs This project deals with the development of a new binder, which based on combination of hydrated calcium trisulfo aluminate and hydrated ferritic to replace current binders based mainly on C3S-CSH systems. This new binder will improve the stabilisation of all types of wastes. The 2 main effects will be:
- A reduction of storage costs by increasing incorporation ratio of wastes in cemented matrix or by storing some of stabilised dangerous wastes in a non-toxic landfill with less important taxes;
- A valorisation of wastes, which are currently stored in landfills, into products of our everyday life.

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7,Rue Condorcet 7

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