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The argan tree continues to surprise with its ability to reinvent itself beyond its traditional uses. At the 8th International Argan Tree Congress, held in Essaouira this week from May 8 to 10, a scientific breakthrough drew strong attention.
Young Moroccan researchers presented high-performance thermal and acoustic insulation panels made entirely from tree residues. The innovation is based on a unique combination of crushed shells and argan press cake, turning what was once considered a by-product of oil extraction into a strategic resource for the sustainable construction sector.
Bio-based chemistry
The real technological achievement lies in the combined use of shells and press cake (the solid residue left after pressing the kernels). While the shell provides rigidity and structure, the press cake—thanks to its density and fibrous properties—acts as a natural binder and an exceptional sound insulator.
By mixing these two elements, researchers developed composites with high thermal inertia capable of naturally regulating building temperatures. For Economic Interest Groups (GIEs), this solution offers a “zero-waste” valorization opportunity: press cake, once limited to cosmetics or animal feed, now becomes a structural component capable of long-term carbon storage within building walls.
Full valorization
This use in construction completes an already highly diversified valorization cycle. Argan press cake also retains its status as a high-value product in the cosmetics industry, where its exfoliating properties and richness in saponins make it a key ingredient in natural scrubs.
The fleshy pulp surrounding the nut remains an important part of local livestock farming as an energy-rich feed, while unprocessed shells continue to be used as eco-friendly fuel with high calorific value in traditional ovens. This multidimensional approach ensures the optimal use of every part of the fruit, leaving no waste behind in a true circular economy model.
A solidarity-driven lever
The industrialization of these insulation panels represents a major socio-economic turning point for cooperatives and rural communities. By diversifying outlets, women in the argan-producing regions and GIEs strengthen their resilience against fluctuations in harvests.
The creation of this new “green building” sector generates stable additional income and extends the value of shelling and pressing work beyond the oil market alone. By transforming the argan tree into a true source of materials for cosmetics, energy, and construction, Morocco reinforces an inclusive development model that protects the environment while ensuring sustainable prosperity for the guardians of this world heritage.
