Opuntia Ficus Indica based green composites for NPK fertilizer controlled release produced by compression molding and fused deposition modeling.
Keywords Green composites, 3D printing, Sustainable agriculture, Biopolymers, Circular economy, Waste valorization Research areas Material Sciences, Environmental Sciences, Agriculture, Plant Sciences, Environmental Engineering References Release data were fitted according to Peppas-Korsmeyer model to understand the release mechanism. The porous structure of FDM samples promote the water transport across the devices allowing the release of the NPK also from the more inner layer. Release tests of devices reveal the ability of all the composites to slow the release rate of NPK (up to 30 days), which proved to be tunable by modifying formulation, flours granulometry and production techniques.
Both filler and fertilizer displayed good dispersion in the composites, excellent adhesion with the matrix and effectively acted as reinforcement. The devices were successfully fabricated both for compression molding and FDM using all the formulations. To solve this problem and promote agriculture sustainability, an innovative green composite for controlled release fertilizers (CRF) was produced by adding NPK fertilizer flour to a biodegradable polymer (Mater-Bi®) with or without Opuntia Ficus Indica (OFI) particles. Poster summary Excessive fertilization causes ecological problems. Polymers, Health and Sustainability (MoDeSt Society),
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