Incorporation of biochars into the biological treatment cascade (anaerobic/aerobic) of biowaste: assessment of development potential for this solution.
Context
The transition towards increased use of biomass within a bioeconomy framework is a significant challenge, to which the use of biowaste through anaerobic digestion and composting can contribute. Its use must be optimal and not create additional environmental impacts. Recent scientific literature converges on the positive effect of adding biochar produced via pyro-gasification of biomass in composting and anaerobic digestion. Specifically, biochar reduces nitrogen losses during composting and enhances biogas production in anaerobic digestion. However, studies are primarily empirical, using poorly characterised biochars. Consequently, key mechanisms leading to these improvements remain hypothetical. It is essential to enhance understanding of the links between biochar’s physicochemical characteristics and anaerobic/aerobic digestion processes, to elucidate the mechanisms involved and optimise their characteristics and operating conditions. Additionally, better control over pyro-gasification conditions is necessary to produce functionalised biochars.
Objectives
This project aims to optimise the Pyro-gasification–Anaerobic Digestion–Composting triad by addressing scientific, environmental, and technological challenges to assess the potential of this value chain.
Expected results
The project aims to produce a richer compost, generate increased methane, and optimise the use of lignocellulosic residues. In the short term, optimised processes will be proposed to industrial stakeholders. In the medium term, integrating biochar could enhance the profitability and efficiency of installations. In the long term, the project may lead to the establishment of integrated biorefineries combining composting, anaerobic digestion, and pyro-gasification. This innovative model will support the circular economy and contribute to the energy transition.
Target markets
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Composting, anaerobic digestion, pyro-gasification / biochar application, integrated biorefineries
Type of transfert planned
Licensing on 3 technologies and research collaboration with private partners : industrials in organic waste transformation
Involved components
- UR 0050 LBE
- UR 1466 OPAALE
- ENSCR-ISCR
- UMR 5302 RAPSODEE
Full cost
0
k€
Launch year
0
Month
0
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