Abstract
A new coated slow-release triple superphosphate (TSP) fertilizer was developed using formulations based on lignin (L) derived from olive pomace (OP) and a κ-carrageenan (C) biopolymer, and differen...
Highlights
Phosphorus (P) is an essential macroelement required for plant nutrition
This work reports the valorization of lignin derived from olive pomace biomass (OP)
OP-lignin was used with κ-carrageenan polymers as coating formulations for mineral triple superphosphate (TSP) granules
Summary
Phosphorus (P) is an essential macroelement required for plant nutrition. It is usually the primary limiting factor because the P in soils is in chemical forms that are unavailable to plants.[1,2] Due to the continuous increase in the world population, the use of P fertilizers has become increasingly important to satisfy the global food demand. Lignin (L) is an abundantly available biopolymer derived from wood pulping processes, with a global annual production of approximately 100 million tons.[4] In addition, it is renewable, biodegradable, relatively hydrophobic and rich in carbon.[5] Commercial lignin has been studied as a potential coating agent for mineral fertilizers and showed promoting results in term of nutrients control release.[5,6,7] κ-carrageenan (C) is a promoting biopolymer for fertilizer coating It is extracted from red seaweeds and characterized by high water absorption capacity and film forming property[8,9]. The impact of plasticizer addition on P release from different coating formulations was evaluated
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