Optimization of the Process for Slow-Release Urea Fertilizer with Water Absorption Based on Response Surface Methodology
Source abstract
Abstract
Fertilizers that release nutrients slowly can provide crops with consistent nutrients, while soils with good water-holding capacity can alleviate the impact of droughts on crops. Sodium alginate/carboxymethyl starch sodium/polydopamine/urea (SCPU) is a new kind of slow-release fertilizer with water absorption property. In this study, the Box–Behnken response surface methodology (RSM) was used to reveal the effects of concentrations of sodium alginate, carboxymethyl starch sodium, urea, calcium chloride and dopamine on the encapsulation efficiency and water absorption of SCPU. The results show that the optimum preparation conditions to obtain the highest level of encapsulation efficiency (89.27%) and water absorption (167.05%) are 2.2% sodium alginate, 5% carboxymethyl starch sodium, 30% urea, 1.9% calcium chloride and 0.52% dopamine.
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Research context
OpenAlex topics: Polymer-Based Agricultural Enhancements · Pesticide and Herbicide Environmental Studies · Hydrogels: synthesis, properties, applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shaanxi Institute of Microbiology, Xi’an 710043, China
Bio-Agriculture Institute of Shaanxi, Xi’an 710043, China
Funding
Science and Technology Program of Shaanxi Academy of Science · Key Research and Development Program of Shaanxi Province · Science and Technology Program of Xi’an
References (55)
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