Agglomeration of struvite crystals

Le Corre, Kristell S., Valsami-Jones, Eugenia, Hobbs, Phil, Jefferson, Bruce and Parsons, Simon A. (2007) Agglomeration of struvite crystals. Water Research, 41 2: 419-425. doi:10.1016/j.watres.2006.10.025

Author Le Corre, Kristell S.
Valsami-Jones, Eugenia
Hobbs, Phil
Jefferson, Bruce
Parsons, Simon A.
Title Agglomeration of struvite crystals
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 2007-01
Year available 2006
Sub-type Article (original research)
DOI 10.1016/j.watres.2006.10.025
Volume 41
Issue 2
Start page 419
End page 425
Total pages 7
Place of publication London, United Kingdom
Publisher IWA Publishing
Language eng
Formatted abstract
Struvite crystallisation is widely studied as a way to remove phosphorus from wastewater effluents and simultaneously generates a valuable product for the fertiliser industry. However, to date, some crystallisation processes experimented at either pilot/or full scale face problems linked to the formation of fines. This paper presents results on the investigation of struvite agglomerative properties and the possible application of coagulants and/or flocculants to remove fines. Coagulants investigated were hydrolysing metals salts (Al3+ and Fe3+), calcium compounds and a cationic polymer, polydiallyldimethylammoniumchloride (polyDADMAC). The effects of a natural flocculant (alginate) have also been tested. Results demonstrated that destabilisation of struvite particles by chemical addition was feasible and identified polyDADMAC as a good option for the agglomeration of struvite particles. However, optimisation of its dosage under typical pH conditions for struvite formation showed floc formation to be very pH sensitive.
Keyword Struvite
Particle size
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Available online 30 November 2006

Document type: Journal Article
Sub-type: Article (original research)
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