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Published on August 24, 2023
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  • Optimization of recycling unit operations to recover high added value components originated from printed electronics end of life - Internship M2 - 5-6 months Adobe PDF Document Electronics printed on flexible media are omnipresent in our connected world. Very often, electronics are printed on plastic, which makes its recycling difficult or even impossible. In 2019, 53.6 Mt of electronic and electrical waste were produced worldwide and only 17.4 % of this waste was properly collected and recycled . From this electronic and electrical waste, printed circuits boards (PCBs) concentrate the majority of precious metals (Au, Ag, Pd, Cu, etc…). However, the epoxy resin-based support largely used makes the recycling and extraction of these metals difficult. In this context, the European CircEL-Paper project arose. The resin-based support is replaced by a paper support. Therefore, the objective is to adapt the recycling lines currently used for paper to electronics printed on paper substrates in order to maximize the recovery of cellulosic fibers (accepts fractions) and conductive inks (rejects fraction).
  • Eco-responsible building materials - Internship - M2 - 5-6 months - LGP2 / ENSAG Adobe PDF Document In France, the building sector is responsible for more than 25% of the production of greenhouse gases, the majority being related to the production of building materials. It is also responsible for 70% of national waste production, consisting of 80% of excavated inert waste (earth, rubble, concrete). The extraction of sand and gravel in the quarry also generates a large amount of waste: washing sludge (FAC). Faced with the climate emergency, it is imperative to begin major transitions by exploring the possibilities of exploiting these resources. The virtues of raw earth materials, known for millennia, and the fact of being low carbon and reversible has given it a new boom in recent years. The combination of raw earth and plant fibres has repeatedly demonstrated an increase in mechanical strength, a decrease in the density and thermal conductivity of these materials (compressed earth blocks, mortars, extruded earth, etc.). Cellulosic fibers are an abundant resource since they can come from biomass (virgin fibers) but also from recycling (recycled fibers).

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Date of update August 24, 2023

French
LGP2 Laboratoire Génie des Procédés Papetiers
Laboratory of Process Engineering for Biorefinery,
Bio-based Materials and Functional Printing

461 rue de la Papeterie - Domaine universitaire - CS 10065
38402 Saint Martin d’Hères Cedex - France
Tél. +33 (0)4 76 82 69 00
 
 
République Française        

 
Université Grenoble Alpes