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...
| Main Authors: | , , |
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| Format: | Article |
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Chemical Industry & Chemical Engineering Quarterly
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34232/ |
| _version_ | 1848847713089617920 |
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| author | Mahdavi, Fariba Abdul Rashid, Suraya Yusop, Mohd. Khanif |
| author_facet | Mahdavi, Fariba Abdul Rashid, Suraya Yusop, Mohd. Khanif |
| author_sort | Mahdavi, Fariba |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T09:22:58Z |
| format | Article |
| id | upm-34232 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T09:22:58Z |
| publishDate | 2014 |
| publisher | Chemical Industry & Chemical Engineering Quarterly |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| spellingShingle | Mahdavi, Fariba Abdul Rashid, Suraya Yusop, Mohd. Khanif Intercalation of urea into kaolinite for preparation of controlled realease fertilizer |
| title | 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_short | Intercalation of urea into kaolinite for preparation of controlled realease fertilizer |
| title_sort | intercalation of urea into kaolinite for preparation of controlled realease fertilizer |
| url | http://psasir.upm.edu.my/id/eprint/34232/ http://psasir.upm.edu.my/id/eprint/34232/ http://psasir.upm.edu.my/id/eprint/34232/ |