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Use of Biogenic Silica in Porous Alginate Matrices for Sustainable Fertilization with Tailored Nutrient Delivery
- Source :
- ACS SUSTAINABLE CHEMISTRY AND ENGINEERING. 6(2):2716-2723
- Publication Year :
- 2018
-
Abstract
- Population growth coupled with significant pressure for clean agricultural practices puts a heavy burden on conventional crop treatments that target high yields with minimal cropland expansion. Optimization of fertilization systems is required as part of the solutions to current megatrends. Herein, we present a sustainable strategy to achieve controlled release formulations for nitrogen fertilization. Specifically, we used interfacial engineering to design alginate-based matrices that incorporated biogenic silica particles to achieve increased interfacial area for dynamic entrapment and release of ammonium nitrate. The incorporation of biogenic silica in the alginate matrix provided a porous architecture spanning length scales from the micro- (within particles) to the macrosize (within the polymeric matrix) levels, leading to tunable patterns of nitrogen release. Alginate–biogenic silica granules approached the European requirements of “slow-release” compositions. At optimized silica content, 15% of the n...
- Subjects :
- Slow-release
Nitrogen
General Chemical Engineering
Ammonium nitrate
chemistry.chemical_element
02 engineering and technology
Biogenic silica
010402 general chemistry
01 natural sciences
chemistry.chemical_compound
Nutrient
Human fertilization
Environmental Chemistry
Porosity
ta216
2. Zero hunger
Renewable Energy, Sustainability and the Environment
General Chemistry
15. Life on land
021001 nanoscience & nanotechnology
0104 chemical sciences
chemistry
Chemical engineering
Controlled-Release Formulations
Cellulose nanofibrils
0210 nano-technology
Sodium alginate
Interfacial engineering
Subjects
Details
- Language :
- English
- ISSN :
- 21680485
- Volume :
- 6
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- ACS SUSTAINABLE CHEMISTRY AND ENGINEERING
- Accession number :
- edsair.doi.dedup.....5986fe95249dc5f761a7cc68b9863baf