Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/124261
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Type: | Journal article |
Title: | Engineered phosphate fertilisers with dual-release properties |
Author: | Kabiri, S. Andelkovic, I. Coqui da Silva, R. Degryse, J. Baird, R. Tavakkoli, E. Losic, D. McLaughlin, M. |
Citation: | Industrial and Engineering Chemistry Research, 2020; 59(13):5512-5524 |
Publisher: | American Chemical Society |
Issue Date: | 2020 |
ISSN: | 0888-5885 1520-5045 |
Statement of Responsibility: | Shervin Kabiri, Ivan B. Andelkovic, Rodrigo C. da Silva, Fien Degryse, Roslyn Baird, Ehsan Tavakkoli, Dusan Losic, and Michael J. McLaughlin |
Abstract: | A new strategy to produce phosphate (P) fertilizers with both fast and slowly soluble P by the compaction method to produce composite products is presented. This unique composition is created by combining monoammonium phosphate (MAP) as a highly soluble P nutrient source, with a commercially available slow-release P such as struvite (Str) or P-loaded graphene oxide (GO). Graphene oxide-loaded P was synthesized by in situ oxidation of GO and ferrous ion (GO-Fe) mixtures with hydrogen peroxide and further loading of P onto the GO-Fe composite. The nutrient release in water was studied for dual-release MAP-Str and MAP-GO-Fe-P and compared to their corresponding slow- and fast-release sources. Column perfusion experiments showed a biphasic dissolution behavior with no significant difference between MAP-GO-Fe-P and MAP-Str. Visualization of P diffusion and chemical analysis of the soil after diffusion were used to assess the diffusion of P from different P fertilizers in various types of soil. Runoff and leaching simulations were performed to investigate the effects of the prepared fertilizer formulations on the environment. Overall, the diffusion of the dual-release fertilizers and the P loss in runoff and leaching experiments were less than for MAP. The better environmental performance of the dual-release fertilizers compared to MAP was related to the specific properties of the GO-based materials such as their two-dimensional structure and to the low solubility of the Str in the case of Str-based fertilizers. |
Rights: | © 2020 American Chemical Society |
DOI: | 10.1021/acs.iecr.0c00403 |
Grant ID: | http://purl.org/au-research/grants/arc/DP1501001760 http://purl.org/au-research/grants/arc/150100003 |
Published version: | http://dx.doi.org/10.1021/acs.iecr.0c00403 |
Appears in Collections: | ARC Research Hub for Graphene Enabled Industry Transformation publications Aurora harvest 8 Chemical Engineering publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_124261.pdf | Accepted version | 969.84 kB | Adobe PDF | View/Open |
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