02-06-2014, 11:03 AM
Membrane separation
Membrane separation.ppt (Size: 115 KB / Downloads: 35)
Membrane separation processes: Introduction
Definition: A membrane is a thin barrier which allows selective passage of different species through it.
This selectivity is utilized for separation.
The selectivity is due to:
Size
Shape
Electrostatic charge
Diffusivity
Physicochemical interactions
Volatility
Polarity/solubility
Polymer casting
Precipitation from vapour phase
Precipitation by evaporation
Immersion precipitation
Thermal precipitation
Other methods
Stretching
Sintering
Slip casting
Leaching
Track etching
Driving force in membrane processes
Transmembrane pressure (TMP)
Concentration gradient
Chemical potential
Osmotic pressure
Electric field
Magnetic field
Partial pressure
pH gradient
Membrane separation.ppt (Size: 115 KB / Downloads: 35)
Membrane separation processes: Introduction
Definition: A membrane is a thin barrier which allows selective passage of different species through it.
This selectivity is utilized for separation.
The selectivity is due to:
Size
Shape
Electrostatic charge
Diffusivity
Physicochemical interactions
Volatility
Polarity/solubility
Polymer casting
Precipitation from vapour phase
Precipitation by evaporation
Immersion precipitation
Thermal precipitation
Other methods
Stretching
Sintering
Slip casting
Leaching
Track etching
Driving force in membrane processes
Transmembrane pressure (TMP)
Concentration gradient
Chemical potential
Osmotic pressure
Electric field
Magnetic field
Partial pressure
pH gradient