Thermodynamic and solution chemistry of struvite

Ali, MD Imtiaj, Schneider, Philip A., and Hudson, Neale (2005) Thermodynamic and solution chemistry of struvite. Journal of the Indian Institute of Science, 85 (3). pp. 141-149.

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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 ID: 3484
Item Type: Article (Refereed Research - C1)
Keywords: struvite; solution chemistry; piggery effluent; thermodynamic model
ISSN: 0970-4140
Date Deposited: 19 Jun 2009 03:48
FoR Codes: 03 CHEMICAL SCIENCES > 0307 Theoretical and Computational Chemistry > 030799 Theoretical and Computational Chemistry not elsewhere classified @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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