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Intercalation of urea into kaolinite for preparation of controlled realease fertilizer

Urea was intercalated between layers of kaolinite by dry grinding technique to be used for preparation of controlled release fertilizer. X-ray powder diffraction (XRPD)patterns confirmed the intercalation of urea into kaolinite by the significant expansion of the basal spacing of kaolinite layers fr...

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Main Authors: Mahdavi, Fariba, Abdul Rashid, Suraya, Yusop, Mohd. Khanif
Format: Article
Published: Chemical Industry & Chemical Engineering Quarterly 2014
Online Access:http://psasir.upm.edu.my/id/eprint/34232/
http://www.doiserbia.nb.rs/issue.aspx?issueid=2229
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spelling my.upm.eprints.342322015-12-09T09:05:19Z http://psasir.upm.edu.my/id/eprint/34232/ Intercalation of urea into kaolinite for preparation of controlled realease fertilizer Mahdavi, Fariba Abdul Rashid, Suraya Yusop, Mohd. Khanif Urea was intercalated between layers of kaolinite by dry grinding technique to be used for preparation of controlled release fertilizer. X-ray powder diffraction (XRPD)patterns confirmed the intercalation of urea into kaolinite by the significant expansion of the basal spacing of kaolinite layers from 0.710 to 1.090 nm. Fourier transform infrared spectroscopy (FT-IR) also confirmed the hydrogen bonding between urea and kaolinite. Based on CHNS elemental analysis, 20 wt.% urea was intercalated between kaolinite layers. The urea-inter-calated kaolinite was mixed with hydroxypropyl methylcellulose (HPMC) binder and was granulated to prepare the nitrogen-based controlled release fertilizer. To study the nitrogen release behavior of granules, ultraviolet/visible (UV-Vis) spectroscopy was used through the diacetyl monoxime (DAM) colorimetric method. The result of UV-Vis spectroscopy showed that intercalation of urea into kaolinite decreased the nitrogen release from 25.50 to 13.66% after 24 h and from 98.15 to 70.01% after 30 days of incubation in water. According to the results, the prepared controlled release fertilizer (CRF) behaved according to the standard for CRFs. Chemical Industry & Chemical Engineering Quarterly 2014 Article PeerReviewed Mahdavi, Fariba and Abdul Rashid, Suraya and Yusop, Mohd. Khanif (2014) Intercalation of urea into kaolinite for preparation of controlled realease fertilizer. Chemical Industry and Chemical Engineering Quarterly, 20 (2). pp. 207-213. ISSN 1451-9372; ESSN: 2217-7434 http://www.doiserbia.nb.rs/issue.aspx?issueid=2229 10.2298/CICEQ121004001M
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Urea was intercalated between layers of kaolinite by dry grinding technique to be used for preparation of controlled release fertilizer. X-ray powder diffraction (XRPD)patterns confirmed the intercalation of urea into kaolinite by the significant expansion of the basal spacing of kaolinite layers from 0.710 to 1.090 nm. Fourier transform infrared spectroscopy (FT-IR) also confirmed the hydrogen bonding between urea and kaolinite. Based on CHNS elemental analysis, 20 wt.% urea was intercalated between kaolinite layers. The urea-inter-calated kaolinite was mixed with hydroxypropyl methylcellulose (HPMC) binder and was granulated to prepare the nitrogen-based controlled release fertilizer. To study the nitrogen release behavior of granules, ultraviolet/visible (UV-Vis) spectroscopy was used through the diacetyl monoxime (DAM) colorimetric method. The result of UV-Vis spectroscopy showed that intercalation of urea into kaolinite decreased the nitrogen release from 25.50 to 13.66% after 24 h and from 98.15 to 70.01% after 30 days of incubation in water. According to the results, the prepared controlled release fertilizer (CRF) behaved according to the standard for CRFs.
format Article
author Mahdavi, Fariba
Abdul Rashid, Suraya
Yusop, Mohd. Khanif
spellingShingle Mahdavi, Fariba
Abdul Rashid, Suraya
Yusop, Mohd. Khanif
Intercalation of urea into kaolinite for preparation of controlled realease fertilizer
author_facet Mahdavi, Fariba
Abdul Rashid, Suraya
Yusop, Mohd. Khanif
author_sort Mahdavi, Fariba
title Intercalation of urea into kaolinite for preparation of controlled realease fertilizer
title_short Intercalation of urea into kaolinite for preparation of controlled realease fertilizer
title_full Intercalation of urea into kaolinite for preparation of controlled realease fertilizer
title_fullStr Intercalation of urea into kaolinite for preparation of controlled realease fertilizer
title_full_unstemmed Intercalation of urea into kaolinite for preparation of controlled realease fertilizer
title_sort intercalation of urea into kaolinite for preparation of controlled realease fertilizer
publisher Chemical Industry & Chemical Engineering Quarterly
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/34232/
http://www.doiserbia.nb.rs/issue.aspx?issueid=2229
_version_ 1643831091886292992
score 13.211869

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