Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles

When pristine urea particles are subjected to spray coating in a fluidized bed, the frequency of substrate particles to come across the spray zone changes due to various hydrodynamic factors of the fluidized bed giving rise to preferential coating. The heterogeneity of coating film on the surface of...

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Main Authors: Azeem, B., KuShaari, K., Man, Z., Irfan, S.A., Trinh, T.H.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.19322 /
Published: Elsevier B.V. 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026851129&doi=10.1016%2fj.powtec.2017.07.095&partnerID=40&md5=71c0dbd58536b2d732922054f068c249
http://eprints.utp.edu.my/19322/
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spelling utp-eprints.193222018-05-03T02:12:07Z Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles Azeem, B. KuShaari, K. Man, Z. Irfan, S.A. Trinh, T.H. When pristine urea particles are subjected to spray coating in a fluidized bed, the frequency of substrate particles to come across the spray zone changes due to various hydrodynamic factors of the fluidized bed giving rise to preferential coating. The heterogeneity of coating film on the surface of urea particles results in poor coating quality which ultimately affects the controlled-release properties of the coated product. In this study, the effect of tumbling fluidized bed process parameters is studied on coating quality and the Response Surface Methodology is employed for the optimization of process parameters for better results. In case of coating uniformity w.r.t. coefficient of variance (CV) of coating thickness, atomizing air pressure appears as the most influential parameter. The best coating uniformity in this case is achieved at 2.25 bar of atomizing pressure. The lowest and highest values of atomizing pressure resulted in higher CV of coating thickness. In case of coating uniformity w.r.t. change in coating mass, coating time appears the most influential parameter. Coating mass increases linearly with coating time. For coating uniformity in terms of CV of size distribution, atomizing pressure and fluidizing gas temperature are the most influential parameters. The best coating uniformity is witnessed at 85 °C and 1.90 bar. The optimum values of process parameters and response objectives can be used to scale-up the unit used. © 2017 Elsevier B.V. Elsevier B.V. 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026851129&doi=10.1016%2fj.powtec.2017.07.095&partnerID=40&md5=71c0dbd58536b2d732922054f068c249 Azeem, B. and KuShaari, K. and Man, Z. and Irfan, S.A. and Trinh, T.H. (2017) Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles. Powder Technology, 320 . pp. 714-725. http://eprints.utp.edu.my/19322/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description When pristine urea particles are subjected to spray coating in a fluidized bed, the frequency of substrate particles to come across the spray zone changes due to various hydrodynamic factors of the fluidized bed giving rise to preferential coating. The heterogeneity of coating film on the surface of urea particles results in poor coating quality which ultimately affects the controlled-release properties of the coated product. In this study, the effect of tumbling fluidized bed process parameters is studied on coating quality and the Response Surface Methodology is employed for the optimization of process parameters for better results. In case of coating uniformity w.r.t. coefficient of variance (CV) of coating thickness, atomizing air pressure appears as the most influential parameter. The best coating uniformity in this case is achieved at 2.25 bar of atomizing pressure. The lowest and highest values of atomizing pressure resulted in higher CV of coating thickness. In case of coating uniformity w.r.t. change in coating mass, coating time appears the most influential parameter. Coating mass increases linearly with coating time. For coating uniformity in terms of CV of size distribution, atomizing pressure and fluidizing gas temperature are the most influential parameters. The best coating uniformity is witnessed at 85 °C and 1.90 bar. The optimum values of process parameters and response objectives can be used to scale-up the unit used. © 2017 Elsevier B.V.
format Article
author Azeem, B.
KuShaari, K.
Man, Z.
Irfan, S.A.
Trinh, T.H.
spellingShingle Azeem, B.
KuShaari, K.
Man, Z.
Irfan, S.A.
Trinh, T.H.
Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles
author_sort Azeem, B.
title Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles
title_short Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles
title_full Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles
title_fullStr Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles
title_full_unstemmed Tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles
title_sort tumbling fluidized-bed process parameters affecting quality of biopolymer coating on surface of pristine urea particles
publisher Elsevier B.V.
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026851129&doi=10.1016%2fj.powtec.2017.07.095&partnerID=40&md5=71c0dbd58536b2d732922054f068c249
http://eprints.utp.edu.my/19322/
_version_ 1741196188401532928
score 11.62408

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