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Collagen-Based Hydrogels Composites from Hide Waste to Produce Smart Fertilizers by Daniela Simina Stefan; Gabriel Zainescu; Ana-Maria Manea-Saghin; Irene-Eva Triantaphyllidou; Ioanna Tzoumani; Triantafyllos I. Tatoulis; George T. Syriopoulos; Aurelia Meghea is a Engineering article available to read on EtoBox.

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The study aims at reusing and recycling the protein hide waste from the leather industry in ecological conditions by elaborating an innovative procedure in order to obtain a collagen matrix functionalized with nitrogen, phosphorus, and potassium (NPK) nutrients to be used for preparing smart fertilizers. This is an interdisciplinary approach, as it starts from hide waste raw material as a critical industrial waste, which is then subjected to several technological steps by selection of optimal processing parameters, followed by product fabrication at the laboratory, and next scales to the industrial pilot plant to obtain novel agro-hydrogels. In this context, the technology scheme for collagen hydrolysate with encapsulated nutrients was proposed and the process parameters were optimized by functionalization of agro-hydrogels with various natural and synthetic polymers, such as polyacrylamide, poly(sodium 4-styrenesulfonate-co-glycidyl methacrylate) copolymer, starch or dolomite. Based on the laboratory experiments, a pilot plant was constructed and tested. Taking as reference the collagen hydrolysate with encapsulated nutrients, the new fertilizers were adequately characterized by c

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Author

Daniela Simina Stefan; Gabriel Zainescu; Ana-Maria Manea-Saghin; Irene-Eva Triantaphyllidou; Ioanna Tzoumani; Triantafyllos I. Tatoulis; George T. Syriopoulos; Aurelia Meghea

Publisher

MDPI AG

Published

2020

Language

EN

Field

Engineering (Physical Sciences)