Abstract
The dry based coating of core particles with soluble powder dispersed inside an impermeable layer of biodegradable wax was performed to control the release rate of core material. The mathematical model was developed to describe the release profiles by diffusion of core material through the percolation paths formed with soluble powder inside the coating layer. Then, the effective diffusivity was estimated by a random walk model. The experimental release profiles for the urea core particles coated with urea powder dispersed inside a lauric acid layer were quantitatively compared with simulated ones for different volume fractions of soluble powder and thickness of the coating layer. As a result, the low release rate of core material was proven to be obtained with low volume fraction of soluble powder dispersed in the thick coating layer.
| Original language | English |
|---|---|
| Pages (from-to) | 40-45 |
| Number of pages | 6 |
| Journal | Journal of Chemical Engineering of Japan |
| Volume | 35 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2002 |
| Externally published | Yes |
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Keywords
- Agglomerate
- Coating
- Controlled release
- Mathematical model
- Urea fertilizer
ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
Controlled release of core particle coated with soluble particles in impermeable layer. / Ito, Ryusei; Golman, Boris; Shinohara, Kunio.
In: Journal of Chemical Engineering of Japan, Vol. 35, No. 1, 01.2002, p. 40-45.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Controlled release of core particle coated with soluble particles in impermeable layer
AU - Ito, Ryusei
AU - Golman, Boris
AU - Shinohara, Kunio
PY - 2002/1
Y1 - 2002/1
N2 - The dry based coating of core particles with soluble powder dispersed inside an impermeable layer of biodegradable wax was performed to control the release rate of core material. The mathematical model was developed to describe the release profiles by diffusion of core material through the percolation paths formed with soluble powder inside the coating layer. Then, the effective diffusivity was estimated by a random walk model. The experimental release profiles for the urea core particles coated with urea powder dispersed inside a lauric acid layer were quantitatively compared with simulated ones for different volume fractions of soluble powder and thickness of the coating layer. As a result, the low release rate of core material was proven to be obtained with low volume fraction of soluble powder dispersed in the thick coating layer.
AB - The dry based coating of core particles with soluble powder dispersed inside an impermeable layer of biodegradable wax was performed to control the release rate of core material. The mathematical model was developed to describe the release profiles by diffusion of core material through the percolation paths formed with soluble powder inside the coating layer. Then, the effective diffusivity was estimated by a random walk model. The experimental release profiles for the urea core particles coated with urea powder dispersed inside a lauric acid layer were quantitatively compared with simulated ones for different volume fractions of soluble powder and thickness of the coating layer. As a result, the low release rate of core material was proven to be obtained with low volume fraction of soluble powder dispersed in the thick coating layer.
KW - Agglomerate
KW - Coating
KW - Controlled release
KW - Mathematical model
KW - Urea fertilizer
UR - http://www.scopus.com/inward/record.url?scp=0036190421&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036190421&partnerID=8YFLogxK
U2 - 10.1252/jcej.35.40
DO - 10.1252/jcej.35.40
M3 - Article
AN - SCOPUS:0036190421
VL - 35
SP - 40
EP - 45
JO - Journal of Chemical Engineering of Japan
JF - Journal of Chemical Engineering of Japan
SN - 0021-9592
IS - 1
ER -