Project: Distillateur solaire 3D et pyrolyse flash pour le recyclage des eaux usées issues de la transformation des olives en eau d'irrigation et en biochars

Acronym	3D-STELLAR
Duration	01/10/2024 - 01/10/2027
Project Topic	The countries of the Mediterranean basin produce about 97% of the world's olives, which represents to up to 3 million tons of olive oil per year. The various processes of olive oil extraction generate huge amounts of solid and liquid waste. It is estimated that the processing of 1 ton of olives would generate on average 1 m3 of Olive Mill Waste Water (OMWW). The 3D-STELLAR project aims to treat and valorize the toxic OMWW according to the principles of green and sustainable chemistry for a circular economy. Current regulations only authorize the direct spreading of these materials in a small proportion of the volumes generated, and industrialists are looking for other ways to manage this toxic liquid waste. The 3D-STELLAR consortium will explore the possibilities of treating these effluents and proposes to study the means of accelerating their evaporation/drying in order to better transform and valorize them. 3D-STELLAR project is based on two main technologies: 3D-Solar Distillers, which have the advantage of having a low environmental impact to clean water and, flash pyrolysis with thermal shock that does not generate by-products and is very fast. A mobile prototype (semi-pilot) capable of treating the equivalent of a 1 m3 tank will be built and installed in the field to validate the concept described in the 3D-STELLAR project. Our proposal addresses section 2.2 “Farming systems”, A step toward carbon-neutral farms: coupling renewable energy sources with circular farming systems. This project proposes a circular, low-carbon approach to olive oil processing. With the implementation of 3D STELLAR, water will be recycled and harvested using solar energy and the concentrated sludge will be converted into nutritious/value-added products. Thus, Mediterranean farms will benefit from the water for irrigation/reuse, while the remaining sludge will be used directly as fertilizer and/or will be transformed into biochars to amend the soil.
Network	PRIMA
Call	Section 2 – Multi-topic 2023

Project partner

Number	Name	Role	Country
111	Institut Jean Lamour	Coordinator	France
112	Institut national de recherche pour l'agriculture, l'alimentation et l'environnement	Partner	France
113	Laboratoire Génie des Matériaux pour Environnement et Valorisation	Partner	Morocco
114	Laboratory of Water, Energy and Environment (LR99ES35)	Partner	Tunisia