Encapsulated Urea-Kaolinite Nanocomposite for Controlled Release Fertilizer Formulations
Joint Authors
Sempeho, Siafu Ibahati
Kim, Hee Taik
Mubofu, Egid
Pogrebnoi, Alexander
Shao, Godlisten
Hilonga, Askwar
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-06-11
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Urea controlled release fertilizer (CRF) was prepared via kaolinite intercalation followed by gum arabic encapsulation in an attempt to reduce its severe losses associated with dissolution, hydrolysis, and diffusion.
Following the beneficiation, the nonkaolinite fraction decreased from 39.58% to 0.36% whereas the kaolinite fraction increased from 60.42% to 99.64%.
The X-ray diffractions showed that kaolinite was a major phase with FCC Bravais crystal lattice with particle sizes ranging between 14.6 nm and 92.5 nm.
The particle size varied with intercalation ratios with methanol intercalated kaolinite > DMSO-kaolinite > urea-kaolinite (KPDMU).
Following intercalation, SEM analysis revealed a change of order from thick compact overlapping euhedral pseudohexagonal platelets to irregular booklets which later transformed to vermiform morphology and dispersed euhedral pseudohexagonal platelets.
Besides, dispersed euhedral pseudohexagonal platelets were seen to coexist with blocky-vermicular booklets.
In addition, a unique brain-form agglomeration which transformed into roundish particles mart was observed after encapsulation.
The nanocomposites decomposed between 48 and 600°C.
Release profiles showed that 100% of urea was released in 97 hours from KPDMU while 87% was released in 150 hours from the encapsulated nanocomposite.
The findings established that it is possible to use Pugu kaolinite and gum arabic biopolymer to prepare urea CRF formulations.
American Psychological Association (APA)
Sempeho, Siafu Ibahati& Kim, Hee Taik& Mubofu, Egid& Pogrebnoi, Alexander& Shao, Godlisten& Hilonga, Askwar. 2015. Encapsulated Urea-Kaolinite Nanocomposite for Controlled Release Fertilizer Formulations. Journal of Chemistry،Vol. 2015, no. 2015, pp.1-17.
https://search.emarefa.net/detail/BIM-1067359
Modern Language Association (MLA)
Sempeho, Siafu Ibahati…[et al.]. Encapsulated Urea-Kaolinite Nanocomposite for Controlled Release Fertilizer Formulations. Journal of Chemistry No. 2015 (2015), pp.1-17.
https://search.emarefa.net/detail/BIM-1067359
American Medical Association (AMA)
Sempeho, Siafu Ibahati& Kim, Hee Taik& Mubofu, Egid& Pogrebnoi, Alexander& Shao, Godlisten& Hilonga, Askwar. Encapsulated Urea-Kaolinite Nanocomposite for Controlled Release Fertilizer Formulations. Journal of Chemistry. 2015. Vol. 2015, no. 2015, pp.1-17.
https://search.emarefa.net/detail/BIM-1067359
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1067359