Dynamic simulation of a struvite MSMPR crystalliser with crystal nucleation, growth and aggregation

Galbraith, Shaun C., and Schneider, Philip A. (2010) Dynamic simulation of a struvite MSMPR crystalliser with crystal nucleation, growth and aggregation. In: Proceedings of Chemeca 2010, pp. 1-11. From: Chemeca 2010 40th Annual Australasian Chemical and Process Engineering Conference, 26-29 September 2010, Adelaide, SA, Australia.

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Abstract

Magnesium ammonium phosphate (commonly known as struvite) crystallisation is an innovative means of recovering phosphorus from wastewater streams as depletion of non-renewable phosphorus becomes more prevalent. Process understanding is an integral requirement for reduced risk in process design, process control and process optimisation. This paper outlines the development of a struvite crystallisation model for a continuous mixed suspension mixed product removal crystalliser, incorporating solution thermodynamics, mass and population balances and kinetics for crystal nucleation, growth and aggregation processes. Dynamic simulations are performed to show the transient response of the system at varying initial conditions and operating conditions. The importance of modelling nonideal solution thermodynamic behaviour is demonstrated and a sensitivity analysis of key kinetic parameters investigated.

Item ID: 16128
Item Type: Conference Item (Refereed Research Paper - E1)
Keywords: struvite; phosphorus recovery; thermodynamics; kinetics; population balance; dynamic simulation
ISBN: 978-085-825-9713
Date Deposited: 31 May 2011 01:58
FoR Codes: 09 ENGINEERING > 0904 Chemical Engineering > 090407 Process Control and Simulation @ 50%
09 ENGINEERING > 0904 Chemical Engineering > 090409 Wastewater Treatment Processes @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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