Immobilized carbon filter media for general purpose carbon adsorption applications
Why go bulk powdered activated carbon (PAC) when you can go with Seitz AKS4 Activated Carbon Sheets? Developed to satisfy general purpose carbon adsorption applications in the food and beverage industry, the AKS4 Sheets include activated carbon within a cellulosic fibers matrix. Carbon-impregnated media with a homogeneous and consistent matrix means you can eliminate concerns over cleaning the process equipment and time and costs associated with carbon removal. Available in rectangular sheets. Other formats are available on request.
High adsorption efficiency reduces overall processing time
Paper layer eliminates the requirement for downstream trap filtration
Good permeability with excellent filtrate quality
High economic efficiency and long service life
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Correction of off-color, flavor and odors in distilled spirits
Decolorization of sweetener and sugar syrups
Color correction in juice and beer applications
Gelatin decolorization and deodorization
Specifications
Food Contact Compliance
Please refer to the Pall website for a Declaration of Compliance to specific National Legislation and/or Regional Regulatory requirements for food contact use.
At an optimized flow rate, the probability of contact between the impurities and carbon particles is greater in carbon-impregnated sheets. This is due to process fluids more efficiently contacting carbon particles immobilized into a sheet matrix. Because of the sheet's depth (thickness), it is possible to consider the structure as being made up of a series of layers containing PAC. Having a depth of PAC and passing the fluid at an optimal flow rate through that depth enables maximum utilization of the carbon. Macro- and mesopores can generally be regarded as the highways into the carbon particle and are crucial for adsorption kinetics. Macropores are used for transport, and adsorption occurs in the meso- and micropores. Small molecules, such as methylene blue, which has a molecular weight of 319.86 Dalton, are mainly captured in micropores. Typically, over 20 g/m2 methylene blue is adsorbed.
Characterization
Sheet with Protection Paper
Mass per Unit Area g/m2
Thickness mm
Ash %
Water Permeability1 l/m2/min (gal/ft2/min)
No
1050
3.8
13
291 (7.2)
Yes
1050
3.8
13
100 (2.5)
These figures have been determined in accordance with in-house test methods and the methods of the Technical / Analytical Work Group within the European Depth Filtration Association.
Regeneration
Depending upon the application and the adsorbed contaminants' nature, AKS series filter sheets may be regenerated by rinsing with clean water in the forward direction. However, the achievable regeneration efficiency must be determined by monitoring filtrate quality.
Sterilization and Sanitization
Method
Temperature °C (°F)
Maximum Differential Pressure Bar (psi)
Time2 Cycle min
Steam
125 (257)
0.5 (7.2)
20
Hot Water
90 (194)
1 (14.5)
30
1The permeability was measured under test conditions with clean water at 20 °C (68 °F) and a Δp of 1 bar (14.5 psi).
2The actual time required may vary as a function of the process conditions.
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