Spout Fluidized Bed Assisted Preparation of Poly(tannic acid)-Coated Urea Fertilizer
Yu Wang, Heling Guo, Xiaolin Wang, Zhiyuan Ma, Xie Li, Rui Li, Qian Li, Rongjie Wang, Xin Jia
Abstract
. The coated urea release behavior was systematically studied in water and soil. In both water and soil, the release rate of nitrogen from coated urea is much slower than that from raw urea. Raw urea was completely dissolved within 30 min, while 27% of urea was released from coated urea. The pot experiments indicated that coated urea has a positive effect on the plant growth as well. Our results provide an effective method to prepare environment-friendly SRFs, indicating a promising application in sustainable agriculture.
Topics & Concepts
Tannic acidUreaCoated ureaCoatingFertilizerRaw materialChemistryFluidized bedMaterials scienceNitrogenChemical engineeringPulp and paper industryOrganic chemistryEngineeringPolymer-Based Agricultural EnhancementsPesticide and Herbicide Environmental StudiesPolymer Surface Interaction Studies