ENHANCING FERTILIZER FORMULATION USING MINING WASTE: SUBSTITUTION OF PHOSPHORIC ACID WITH SLIMES AND CHARACTERIZATION OF RESULTING FERTILIZERS

https://doi.org/10.5281/zenodo.13310232

Authors

  • Ahmed Osman Department of Water, Energy, and Environmental Processes, School of Engineering, University of Cairo, Egypt
  • Mustafa Ibrahim Department of Soil Science, National School of Agriculture, Alexandria, Egypt.
  • Youssef Hassan Department of Soil Science, National School of Agriculture, Alexandria, Egypt.
  • Khaled Mahmoud Department of Water, Energy, and Environmental Processes, School of Engineering, University of Cairo, Egypt.

Keywords:

Slimes, phosphoric acid, fertilizers, formulation.

Abstract

This study aims to valorize the slimes (<40 µm and rich in P2O5) generated during the processing of phosphate ore from Taiba by formulating complex compound fertilizers using these wastes as a source of P2O5 through the progressive substitution of phosphoric acid. Following a complete characterization of the raw material using atomic absorption spectrophotometry and X-ray fluorescence, NPK complex fertilizers of formulas 6-20-10, 15-10-10 and 15-15-15 were produced for local use. To obtain these fertilizers, different sources of fertilizer were used, such as urea containing 46% N, potassium sulfate with 51% K2O, phosphoric acid with 52% and slimes with 24% P2O5. The primary objective was to develop calculation methods to control the concentrations, while the secondary objective was to produce fertilizers assimilable by plants. The analyses yielded highly satisfactory results for the 3 formulas, with differences of -2% for the 6-20-10 and 15-10-10 formulas and slightly +2% for the 15-15-15. The values of total P2O5 and that assimilable by plants were very close, with a difference of -1%, highlighting the quality of the fertilizer produced, as also indicated by the ratio C/N<10. Moisture content between 4 and 15% are indicative of granulation, but does not affect quality of the fertilizer. In 95% of cases, the organic matter (OM) content far exceeds the required value of 0.5% for optimum plant development

Published

2024-07-19

How to Cite

Osman, A., Mustafa , I., Youssef , H., & Khaled , M. (2024). ENHANCING FERTILIZER FORMULATION USING MINING WASTE: SUBSTITUTION OF PHOSPHORIC ACID WITH SLIMES AND CHARACTERIZATION OF RESULTING FERTILIZERS. Interdisciplinary Journal of Agriculture and Environmental Sciences (IJAES), 11(4), 7–19. https://doi.org/10.5281/zenodo.13310232

Issue

Vol. 11 No. 4 (2024): October-December

Section

Original Peer Reviewed Articles
Copyright & Licensing

Copyright (c) 2024 Interdisciplinary Journal of Agriculture and Environmental Sciences (IJAES)

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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