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Context

The France deindustrialization, that began in the 70s, has left indelible marks on our landscape. Brownfields constitute the past activities which representing the richness of our regions. The rehabilitation of these sites in urban areas is mainly based on engineering techniques (excavation, containment of contaminated soil) because of the presence of stable pollutants such as metal trace elements. The significant pressure on land due to urban environments justify the substantial investment in terms of human, economic and landscape resources represented by these techniques. When large polluted areas are located in low urbanization rate zones, this rehabilitation mode is rarely observed. It results in a substantial area of brownfields unusable for humans.


Industrial by-products and decontaminate soils are now struggling to find concrete valorisation sector, in the french administrative situation. These materials ( sludge from wastewater treatment plants or mills, ash, etc.) most of the time considered as garbage, can reduce competitiveness for local industries, forced to consider exepension evacuate solutions (incineration, landfill sites, etc.).

On the other hand, the world industrial interest metal demand is growing, supported by global booming predominantly Asian electronic and metallurgical industry. The expansion of underground mineral resources exploitation mining sites cannot satisfy world demand. Moreover, mining activity can generate environmental problems (eg metal accumulation in preserved ecosystems, acid mine drainage) and impact human health when food chain is contaminated by metals.

Furthermore, France is committed to the European Union to produce 23% of its energy from renewable resources by 2020. To achieve this ambitious goal, the development of biomass energy sector is inevitable. The contribution of dedicated crops is particularly assured of a bright future. Nevertheless, this development faced with food or energy production lands.

Finally, the fiber material market is growing as the need for replacement of non-renewable materials and appears today in many industrial applications (construction, transport, clothing).

LORVER project addresses these issues through innovative and practical action and research grounded in a logic of sustainable development at the regional level :
- reconstruction and improvement of soil fertility by promoting byproducts and abandoned materials,
- biomass production on sites where food purpose agriculture is excluded for the purpose of energy recovery on the one hand, and recovery in fiber materials on the other hand,
- exploring the possibilities of cadmium and zinc phytoextraction by a hyperaccumulator plant.