Journal article
Modelling and simulation of inorganic precipitation with nucleation, crystal growth and aggregation: A new approach to an old method
Chemical Engineering Journal, Vol.240, pp.124-132
2014
Abstract
A process model is developed to simulate the recovery of inorganic mineral phosphates through precipitation, incorporating nucleation, crystal growth and aggregation mechanisms. The model includes a detailed description of solution thermodynamics, nucleation, growth and aggregation kinetics, a population balance and dynamic mass conservation. A discretised population balance (DPB) is used to describe changes to the particle size distribution (PSD) caused by nucleation, growth and aggregation. A sigmoid function is incorporated into the DPB to produce a better description of small-particle dynamics. The model is applied in the context of nutrient removal and recovery, with specific focus on a recovery pathway for phosphorus based on chemical precipitation. The model is used here to simulate a mixed suspension, mixed product removal (MSMPR) reactor and explore the relationship between operating conditions and thermodynamics. A validation for the solution thermodynamics portion of the model is also performed and the model is found to successfully predict solution pH.
Details
- Title
- Modelling and simulation of inorganic precipitation with nucleation, crystal growth and aggregation: A new approach to an old method
- Authors/Creators
- S.C. Galbraith (Author/Creator)P.A. Schneider (Author/Creator)
- Publication Details
- Chemical Engineering Journal, Vol.240, pp.124-132
- Publisher
- Elsevier
- Identifiers
- 991005540782007891
- Copyright
- © 2013 Elsevier B.V.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.83 Bioengineering
- 3.83.2268 Struvite
- Web Of Science research areas
- Engineering, Chemical
- Engineering, Environmental
- ESI research areas
- Engineering