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Thermodynamics and solution chemistry of struvite

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Ali, M.I., Schneider, P.A. and Hudson, N. (2005) Thermodynamics and solution chemistry of struvite. Journal of the Indian Institute of Science, 85 (3). pp. 141-149. ISSN 0019-4964

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Article Link: https://journal.iisc.ac.in/index.php/iisc/article/...

Abstract

The key feature of this paper is the combined removal of magnesium, ammonium and phosphate from a representative synthetic solution of piggery effluent. The byproduct of this recovery process is struvite, commercially used as slow-release fertiliser. A thermodynamic model was developed relating to all the complexes of magnesium, ammonium and phosphate using gPROMS process software. A laboratory-based batch experiment confirmed 80% recovery of phosphate using this crystallization technique. The batch experiment was conducted at constant pH using synthetic solution made up of analytical-grade MgCl2 and NH4H2PO4. Borosilicate glass grindings of 5 g were used as seeds in this batch experiment. Basic solution characteristics of piggery effluent are reported in this paper.

Item Type:Article
Keywords:Struvite; solution chemistry; piggery effluent; thermodynamic model
Subjects:Science > Biology > Biochemistry
Live Archive:06 Feb 2024 06:00
Last Modified:06 Feb 2024 06:00

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