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Granular carbon bed

The choice of the rotor design depends on the type of adsorbent employed. Rotor adsorbers accommodating pellets or granular carbon beds come as wheel type baskets divided into segments to separate the adsorption zone from the regeneration zone. Alternatively, they may be equipped with a structured carrier (e.g., ceramics, cellulose) coated with or incorporating different adsorbents such as... [Pg.1521]

In the countercurrent continuous method, which is very commonly used in many sugar processing plants, the sugar solution to be decolorized flows upward through the granular carbon bed that continuously moves downward in the adsorption column. The flow rate of the solution is so chosen that it expands the bed of the adsorbent... [Pg.249]

Illustration 6,4 Adsorption of Benzene from Water in a Granular Carbon Bed... [Pg.205]

Pulsed beds of ac tivated carbon are used in water and wastewater treatment systems. The adsorber tank is usually a vertical cylindrical pressure vessel, with fluid distributors at top and bottom, similar to the arrangement of an ion exchanger. The column is filled with granular carbon. Fluid flow is upward, and carbon is intermittently dis-... [Pg.1554]

The application of activated carbons in adsorption heat pumps and refrigerators is discussed in Chapter 10. Such arrangements offer the potential for increased efficiency because they utilize a primary fuel source for heat, rather than use electricity, which must first be generated and transmitted to a device to provide mechanical energy. The basic adsorption cycle is analyzed and reviewed, and the choice of refrigerant-adsorbent pairs discussed. Potential improvements in cost effectiveness are detailed, including the use of improved adsorbent carbons, advanced cycles, and improved heat transfer in the granular adsorbent carbon beds. [Pg.20]

If the liquor is not to be enzyme-converted, it is pumped to mud centrifuges and rotary drum filters which remove the suspended fats and insoluble impurities from the filtrate. Amino acids and peptides which may react with carbohydrates are also removed. Then the filtrate is passed through pulsed beds of activated carbon for clarification and bleaching. The temperature in the carbon column is maintained at 150-170°F (69-77°C) with a typical contact time of 90-120 minutes for optimum removal of impurities. Usually these columns contain packed granular carbon, although powdered carbon may also be used. [Pg.805]

Carbon adsorbents have traditionally been used for removal of coloration in the clarified effluent liquor. The general carbon adsorbents, which may be bone char, granular carbon, or powdered carbon products, are used in either a fixed-bed operation or a moving-bed process. These carbons are regenerated at intervals to maintain their effectiveness. [Pg.183]

FIG. 10 Butane breakthrough curves for activated carbon beds (a) fiber composite (b) granular (20 ppm butane in nitrogen). [Pg.18]


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Adsorption of Benzene from Water in a Granular Carbon Bed

Carbon beds

Carbon granular

Granular bed

Granular carbonization

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