Aminated Lignin-Reinforced Biopolymer Hydrogels for Sustained Phosphate Delivery via Struvite Encapsulation in Acidic Environments.

ABSTRACT: The escalating global demand for food production, coupled with excessive fertilizer use and freshwater depletion, necessitates sustainable solutions in agriculture. The excessive utilization of fertilizers to enhance crop productivity reflects a variety of negative impacts, including environmental and economic challenges. In this study, a biodegradable, dual crosslinked hydrogel composed of polyvinyl alcohol (P), chitosan (Chi), and aminated lignin (AL) is developed to encapsulate struvite (MgNH₄PO₄·6H₂O), a slow-release phosphate fertilizer. AL is synthesized via Mannich reaction using polyethyleneimine to enhance nitrogen content and functionality. The structural and functional characterization of the hydrogels is carried out using FTIR, SEM, XRD, and TGA

SUBMITTER: Khan AA 

PROVIDER: S-EPMC12519428 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature