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Effect of pre-coat solution temperature on fluidized bed urea coatings

In this study, coating properties of the native cassava starch were improved by reacting it with urea and di-sodium tetraborate. The FTIR spectroscopy was used to study the possible reaction mechanism of the coating formulation. The prepared starch dispersions were used to coat 3·45 mm urea granule...

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Main Authors: Naz, M.Y., Sulaiman, S.A., Ariwahjoedi, B., Shaari, K.Z.K.
Format: Article
Published: Maney Publishing 2015
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938912636&doi=10.1179%2f1743294414Y.0000000381&partnerID=40&md5=1dd08ba3149c4f55aa3a88dc66f8bdfa
http://eprints.utp.edu.my/31421/
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spelling my.utp.eprints.314212022-03-26T03:19:18Z Effect of pre-coat solution temperature on fluidized bed urea coatings Naz, M.Y. Sulaiman, S.A. Ariwahjoedi, B. Shaari, K.Z.K. In this study, coating properties of the native cassava starch were improved by reacting it with urea and di-sodium tetraborate. The FTIR spectroscopy was used to study the possible reaction mechanism of the coating formulation. The prepared starch dispersions were used to coat 3·45 mm urea granules in a swirling fluidised bed reactor. An in-house built fluidised bed with an intermittent top spraying facility was used to coat the urea beds fluidised above their minimum level of fluidisation. The pre-coat solution temperature was varied from 50 to 80°C and the corresponding coated urea samples were further characterised for their surface morphology, coating hardness and nitrogen release time. The SEM images revealed that the surface of the coated urea was harder, denser and smoother as compared to the uncoated urea. Significant improvements in mechanical parameters of coated urea were seen with an increase in solution temperature and mass of the di-sodium tetraborate. The overall nutrients release time of the coated urea in water was increased from 63·33 to 209 s. The surface hardness and coating thickness of coated urea was also increased with an increase in pre-coat solution temperature and di-sodium tetraborate mass in the coating composition. © 2015 Institute of Materials, Minerals and Mining. Maney Publishing 2015 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938912636&doi=10.1179%2f1743294414Y.0000000381&partnerID=40&md5=1dd08ba3149c4f55aa3a88dc66f8bdfa Naz, M.Y. and Sulaiman, S.A. and Ariwahjoedi, B. and Shaari, K.Z.K. (2015) Effect of pre-coat solution temperature on fluidized bed urea coatings. Surface Engineering, 31 (7). pp. 486-491. http://eprints.utp.edu.my/31421/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description In this study, coating properties of the native cassava starch were improved by reacting it with urea and di-sodium tetraborate. The FTIR spectroscopy was used to study the possible reaction mechanism of the coating formulation. The prepared starch dispersions were used to coat 3·45 mm urea granules in a swirling fluidised bed reactor. An in-house built fluidised bed with an intermittent top spraying facility was used to coat the urea beds fluidised above their minimum level of fluidisation. The pre-coat solution temperature was varied from 50 to 80°C and the corresponding coated urea samples were further characterised for their surface morphology, coating hardness and nitrogen release time. The SEM images revealed that the surface of the coated urea was harder, denser and smoother as compared to the uncoated urea. Significant improvements in mechanical parameters of coated urea were seen with an increase in solution temperature and mass of the di-sodium tetraborate. The overall nutrients release time of the coated urea in water was increased from 63·33 to 209 s. The surface hardness and coating thickness of coated urea was also increased with an increase in pre-coat solution temperature and di-sodium tetraborate mass in the coating composition. © 2015 Institute of Materials, Minerals and Mining.
format Article
author Naz, M.Y.
Sulaiman, S.A.
Ariwahjoedi, B.
Shaari, K.Z.K.
spellingShingle Naz, M.Y.
Sulaiman, S.A.
Ariwahjoedi, B.
Shaari, K.Z.K.
Effect of pre-coat solution temperature on fluidized bed urea coatings
author_facet Naz, M.Y.
Sulaiman, S.A.
Ariwahjoedi, B.
Shaari, K.Z.K.
author_sort Naz, M.Y.
title Effect of pre-coat solution temperature on fluidized bed urea coatings
title_short Effect of pre-coat solution temperature on fluidized bed urea coatings
title_full Effect of pre-coat solution temperature on fluidized bed urea coatings
title_fullStr Effect of pre-coat solution temperature on fluidized bed urea coatings
title_full_unstemmed Effect of pre-coat solution temperature on fluidized bed urea coatings
title_sort effect of pre-coat solution temperature on fluidized bed urea coatings
publisher Maney Publishing
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938912636&doi=10.1179%2f1743294414Y.0000000381&partnerID=40&md5=1dd08ba3149c4f55aa3a88dc66f8bdfa
http://eprints.utp.edu.my/31421/
_version_ 1738657245266182144
score 13.211869

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