Kinetics of filtration of model crud with ion exchange resin bed
A simple mathematical model is presented to depict the filtration mechanism of crud or colloidal particles in the ion exchange resin bed. In this model the filtration process is classified into four stages, corresponding to the increase in the deposited amounts of the particles on the surfaces of the resins during the filtration process. In the first stage, it is assumed that the adhesion of crud particles is mainly controlled by the electrokinetic interaction between the particle and the virgin surfaces of the resins, while in the third stage the crud particles interact with the particles already adsorbed in the resins. The second stage is a transient period between the first and third stages. In the final stage, the clogging effect becomes significant. At the first stage of filtration, the model explains the rapid decrease of filtration efficiency, which is a matter of great concern from the practical point of view. A comparison is made between the model and laboratory experiments, using monodispersed ..cap alpha..-Fe/sub 2/O/sub 3/ particles as model crud, and it is found that the proposed mechanism of filtration process seems quite reasonable.
- Research Organization:
- Univ. of Tokyo, Faculty of Engineering, Dept. of Nuclear Engineering, Tokyo (JP)
- OSTI ID:
- 6779687
- Journal Information:
- Nucl. Sci. Eng.; (United States), Vol. 97:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ION EXCHANGE MATERIALS
FILTRATION
RESINS
SURFACE PROPERTIES
CHEMICAL REACTION KINETICS
COLLOIDS
DEPOSITION
ELECTROCHEMICAL COATING
EXPERIMENTAL DATA
ION EXCHANGE
IRON OXIDES
LABORATORIES
MATHEMATICAL MODELS
PARTICLES
CHALCOGENIDES
CHEMICAL COATING
DATA
DISPERSIONS
INFORMATION
IRON COMPOUNDS
KINETICS
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
REACTION KINETICS
SEPARATION PROCESSES
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
400105* - Separation Procedures