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Synthesis of a slow-release fertilizer composite derived from waste straw that improves water retention and agricultural yield.
- Source :
-
Science of the Total Environment . May2021, Vol. 768, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- To enhance waste straw utilization and improve fertilizer efficiency, a novel semi-interpenetrating polymer network fertilizer (CMCK-g-PAA/PDMUP) was prepared from straw cellulose and linear polymer by solution polymerization. Polydihydroxymethyl-urea potassium phosphate (PDMUP) was included to supply nitrogen, phosphorus, and potassium nutrients. Characterization of CMCK-g-PAA/PDMUP with FTIR, XPS, XRD, and SEM techniques provided evidence for semi-interpenetrating polymer networks (semi-IPNs) and component interactions. The prepared product exhibited excellent water absorbency (681.3 g/g) and enhanced the soil's water-retention capacity. Cumulative release of N, P, and K was 56.1%, 64.3%, and 74.1%, respectively, after 40 days–meeting a Committee of European Normalization (CEN) standard. Agricultural application of CMCK-g-PAA/PDMUP promoted wheat growth. Desirable water retention, slow-release properties, and wheat growth effects highlight the product's potential for improving agriculture. Unlabelled Image • Application of the polymer (CMCK-g-PAA/PDMUP) could achieve utilization of waste straw. • The CMCK-g-PAA/PDMUP is derived from waste straw and rich in fertilizers (N, P and K). • The product had excellent water retention and slow-release properties. • The product prepared by waste straw can reduces production cost and promote plant growth. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00489697
- Volume :
- 768
- Database :
- Academic Search Index
- Journal :
- Science of the Total Environment
- Publication Type :
- Academic Journal
- Accession number :
- 149015600
- Full Text :
- https://doi.org/10.1016/j.scitotenv.2021.144978