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Application of response surface methodology for optimization of urea grafted multiwalled carbon nanotubes in enhancing nitrogen use efficiency and nitrogen uptake by paddy plants

Mohd Yatim, Norazlina and Shaaban, Azizah and Dimin, Mohd Fairuz and Yusof, Faridah and Abdul Razak, Jeefferie (2016) Application of response surface methodology for optimization of urea grafted multiwalled carbon nanotubes in enhancing nitrogen use efficiency and nitrogen uptake by paddy plants. Journal of Nanotechnology, 2016. pp. 1250739-1. ISSN 1687-9503

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Abstract

Efficient use of urea fertilizer (UF) as important nitrogen (N) source in the world's rice production has been a concern. Carbon-based materials developed to improve UF performance still represent a great challenge to be formulated for plant nutrition. Advanced N nanocarrier is developed based on functionalized multiwall carbon nanotubes (f-MWCNTs) grafted with UF to produce urea-multiwall carbon nanotubes (UF-MWCNTs) for enhancing the nitrogen uptake (NU) and use efficiency (NUE). The grafted N can be absorbed and utilized by rice efficiently to overcome the N loss from soil-plant systems. The individual and interaction effect between the specified factors of f-MWCNTs amount (0.10-0.60 wt%) and functionalization reflux time (12-24 hrs) with the corresponding responses (NUE, NU) were structured via the Response Surface Methodology (RSM) based on five-level CCD. The UF-MWCNTs with optimized 0.5 wt% f-MWCNTs treated at 21 hrs reflux time achieve tremendous NUE up to 96% and NU at 1180 mg/pot. Significant model terms (p value < 0.05) for NUE and NU responses were confirmed by the ANOVA. Homogeneous dispersion of UF-MWCNTs was observed via FESEM and TEM. The chemical changes were monitored by FT-IR and Raman spectroscopy. Hence, this UF-MWCNTs' approach provides a promising strategy in enhancing plant nutrition for rice.

Item Type: Article (Journal)
Additional Information: 4734/56292
Uncontrolled Keywords: Carbon nanotubes; Efficiency; Metabolism; Nanotubes; Nitrogen; Nitrogen fertilizers; Nutrition; Surface properties; Urea; Urea fertilizers; Yarn
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA164 Bioengineering
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User: DR FARIDAH YUSOF
Date Deposited: 03 Apr 2017 16:29
Last Modified: 21 Oct 2017 06:29
URI: http://irep.iium.edu.my/id/eprint/56292

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