Pregledni rad
A comprehensive computational approach to identify the effect of ligands on struvite crystalliza
Md Imtiaj Ali
; li School of Engineering, James Cook University, Townsville, QLD 4811, Queensland, AUSTR
Sažetak
This paper primarily focused on the struvite process design based on solution by thermodynamics and kinetics. Struvite is a crystal and its chemical composition is MgNH4PO4·6H2O. The predominant parameters involved in thermodynamic are thermodynamic equilibria and pH value. The main solution involved in chemistry are the complex formations between Mg, NH4 and PO4, which include Mg2+, MgOH, MgH2PO4 +, MgHPO4, MgPO4, H3PO4, H2PO4 , PO4 3, MgHPO4, MgPO4 , NH3. The kinetics parameters involved in this modelling are the mass deposition, size of the growing crystal etc. The modelling approach was conducted in fed-batch condition. This paper then focused on the inclusion of thermodynamic equilibria to identify the effect of ligand on struvite growth kinetics as well as solution chemistry. This modelling approach included citrate as a ligand. The simulation approach was conducted using gPROMS process simulation pack.
Ključne riječi
struvite, process, modelling, simulation, fed-batch, lig
Hrčak ID:
313937
URI
Datum izdavanja:
19.12.2004.
Posjeta: 232 *