SUPRAdisc SD AKS 4 300XAK4C419SPW
SUPRAdisc SD AKS 4 300XAK4C215SPW
SUPRAdisc AKS 4 modules were developed to satisfy general purpose carbon adsorption applications in the food and beverage industry.
Powdered activated carbon (PAC) is widely used in the food and beverage industry for adsorption applications. The use of bulk PAC has significant drawbacks relating to the handling of bulk carbon powder, cleaning of the process equipment, as well as time and costs associated with carbon removal from the process.
SUPRAdisc AKS 4 Modules alleviate these concerns by incorporating activated carbon within a matrix of cellulosic fibers. This immobilized carbon media is coupled with a downstream protective filter paper to prevent any possible carbon particle shedding downstream of the filter. Additionally, the adsorption efficiency of Seitz AKS immobilized carbon filter media is greater than an equivalent amount of bulk powdered activated carbon (PAC), reducing overall process time and increasing product yield. An internal comparative study using the same carbon grade showed up to 150 % better color removal efficiency when compared to bulk PAC.
|Carbon-impregnated media with a homogeneous and consistent matrix||
High adsorption efficiency as compared to PAC
|General-duty media targeted to food and beverage industry needs||
|Sheet with Protection Paper||Mass per Unit Area g/m2||Thickness mm||Ash %||Water Permeability1 L/m2/min (gal/ft2/min)|
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.
1The permeability was measured under test conditions with clean water at 20 °C (68 °F) and a Δp of 1 bar (14.5 psi).
Depending upon the application and the nature of the adsorbed contaminants, AKS series filter sheets may be regenerated by means of rinsing with clean water in the forward direction. However, the achievable regeneration efficiency must be determined by monitoring filtrate quality.
Maximum backpressure during all operations is 0 bar. Any backpressure will cause damages to the sheet media.
|Method||Temperature °C (°F)||Maximum Differential Pressure bar (psi)||Time3/Cycle min|
|Steam2||125 (257)||0.5 (7.2)||20|
|Hot Water||90 (194)||1 (14.5)||30|
2Max. 2 steam cycles
3The actual time required may vary as a function of the process conditions.
In order to maximize the required adsorption of impurities, particle filtration must occur upstream of carbon-impregnated filter sheets.
Typical flux rates used on food and beverage fluids are 150-250 L/m2/h (3.7-6.2 gal/ft2/h).
Higher fluxes may be possible according to the application. Due to the various factors, which may affect the adsorption process, Pall recommends an initial scaled-down testing as a reliable method of qualifying filter performance.
For additional operating guidelines, including rinsing of sheets prior to use, please refer to instructions provided by Pall.
12" diameter (284 mm), 15 cells, 1.7m² area
16" diameter (410 mm), 19 cells, 4.5 m² area
Please refer to the Pall website www.pall.com/foodandbev for a Declaration of Compliance to specific National Legislation and/or Regional Regulatory requirements for food contact use.
Cellulose, powdered activated carbon, diatomaceous earth (DE, Kieselguhr)
At an optimized flow rate, the probability of contact between the impurities and carbon particles is greater in carbonimpregnated sheets. This is due to process fluids more efficiently contacting carbon particles immobilized into a sheet matrix. Because of the depth (thickness) of the sheet, 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 the 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.