Journal article
A fed-batch design approach of struvite system in controlled supersaturation
Chemical Engineering Science, Vol.61(12), pp.3951-3961
2006
Abstract
This paper focuses on struvite (MgNH4PO4.6H2O) crystallization in controlled supersaturation. Struvite can be used as a slow-release fertilizer. Crystallization experiments were conducted using supersaturated solutions. The secondary focus of this paper is the design of a struvite recovery system in fed-batch-controlled supersaturation mode. The design and commissioning of fed-batch struvite crystallization included the determination of operating supersaturation of struvite crystallization, suitable seed materials and the composition of feed solution. Determination of operating supersaturation of struvite crystallization was conducted by two steps including thermodynamic simulation using gPROMS2 (process simulation software) along with a set of batch experiments. Investigation of suitable seed materials was also conducted using set of batch experiments. Two types of seed materials including quartz sand and struvite seeds were used in the investigation of seed materials. Composition of feed solution included the investigation of struvite solution chemistry using PHREEQC3 thermodynamic modeling package. Based on the previously investigated design approach, struvite crystallization in fed-batch system was conducted using a 44-L of reactor with 15-L of initial reactant volume.
Details
- Title
- A fed-batch design approach of struvite system in controlled supersaturation
- Authors/Creators
- MD.I. Ali (Author/Creator) - James Cook UniversityP.A. Schneider (Author/Creator) - James Cook University
- Publication Details
- Chemical Engineering Science, Vol.61(12), pp.3951-3961
- Publisher
- Pergamon Press
- Identifiers
- 991005542961607891
- Copyright
- © 2006 Elsevier Ltd.
- 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
- ESI research areas
- Chemistry