Mass Transfer Model for Coated Urea Particle in Controlling-Release Process

Shi Xiong Hao; Xing Yong Liu; Zu Xiao Yu

doi:10.4028/www.scientific.net/AMR.560-561.1119

Paper Titles

Simulation of the Mixing in a Novel Fully Wiped Co-Rotating Non-Twin Screws
p.1091

3-D Coupled Thermo-Mechanical FE Modelling and Simulation of Combined Ring Rolling
p.1097

Modeling and Calculation of Initial Ignition Gas Pressure Flow through the Rigid Porous Media in 100 mm Ignition Simulator
p.1103

Molecular Dynamics Simulation of the Mechanical Properties of NR/TPI
p.1114

Mass Transfer Model for Coated Urea Particle in Controlling-Release Process
p.1119

The Chemical Kinetic Numerical Computation and Kinetic Model Parameters Estimating of Parallel Reactions with Different Reaction Orders
p.1126

Multiscale Computational Model of Nitride Semiconductor Nanostructures
p.1133

Molecular Dynamic Simulation for Co Cluster Deposition on Si Substrate
p.1138

Heat Transfer of Bottom Tubes in Delayed Coking Furnace: Simulation and Measurement
p.1146

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 560-561Mass Transfer Model for Coated Urea Particle in...

Mass Transfer Model for Coated Urea Particle in Controlling-Release Process

Abstract:

Based on mass conservation and Fick’s diffusion law, a model for describing the nutrient release from coated urea particles was proposed. This model was verified by the release data of three novel paraffin- rosin coated urea in distilled water. The results indicate that the model is effective in describing and predicting the delivery behaviors for a diffusion-controlled coated- urea and their correlation coefficients R2 are 0.9976, 0.9973 and 0.9984, respectively. The model shows that the nutrient release rate for coated urea is direct proportion to effective diffusion coefficient Deff, inverse proportion to diameter’s square of urea granule and inverse proportion to the coating thickness.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 560-561)

Pages:

1119-1125

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.560-561.1119

Citation:

Cite this paper

Online since:

August 2012

Authors:

Shi Xiong Hao, Xing Yong Liu, Zu Xiao Yu

Keywords:

Coated-Urea, Controlled-Release, Mass Transfer Model

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] S.M.Al-Zahrani, Utilization of Polyethylene and Paraffin Waxes as Controlled Delivery Systems for Different Fertilizers, Ind.Eng.Chem.Res. 39 (2000) 367-371.

DOI: 10.1021/ie980683f

Google Scholar

[2] Ma C. Gareia, J. A. Diez, A.Vallejo, etc, Use of Kraft Pine Lignin in Controlled-ReleaseFertilizer, Ind. Eng. Chem. Res. 35 (1996) 245-249.

Google Scholar

[3] Byung-Su Ko, Young-Sang Cho and Hyun-Ku Rhee, Controlled Release of Urea from Rosin- Coated Fertilizer Particles, Ind. Eng. Chem. Res. 35 (1996) 250-257.

DOI: 10.1021/ie950162h

Google Scholar

[4] Avi Shaviv, Smadar Raban and Elina Zaidel, Modeling Controlled Nutrient Release from Polymer Coated Fertilizers: Diffusion Release from Single Granules, Environ. Sci. Technol. 37(2003) 2251-2256.

DOI: 10.1021/es011462v

Google Scholar

[5] Hao Shixiong, Chen Hong, and Yu Zuxiao, Determination of Controlled-release Rate for Coated Fertilizer, Chemical Industry and Engineering Progress, 24 (2005) 1278-1281.

Google Scholar

[6] Xu H.C, Huang P.C, Wu G.Y. , Determination of controlled release rate of membrane coating fertilizer, Journal of Beijing Institute of Chemical Technology (Natural Science), 21(1994) 33-37.

Google Scholar

[7] Chemical engineering design institute of China petrochemical industry department, Handbook for nitrogenous fertilizer design, Petrochemical industry press, Beijing, 1977, pp.234-236.

Google Scholar