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Sorbent Containment

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Sorbent Containment Systems

  • Treatment vessels
  • Carbon-holding baskets
  • Activated carbon packs

Sorbent-Holding Baskets are made in two styles: the RS, for recirculating systems, which passes liquid (horizontally) through a shallow bed (approximately 2-1/2 inches deep); the SP, for single-pass systems, has a deep (vertical) bed (approximately 29 inches deep).

Baskets are made entirely of 304 stainless steel, and are of high quality construction. Turning the large lifting handle opens a cover so that they can be emptied. They are easily refilled with materials such as activated carbon. The particles are retained by 100-mesh wire screening.

These baskets can also be filled with adsorbtive materials other than activated carbon. Other processing media might include resin beads, silica gels, alumina, green sand, and odorizing agents.

Replacement Activated Carbon Packs are pre- measured amounts of 20 x 50-mesh-size activated carbon, packaged to protect against moisture. A universal grade of carbon is used, offering good flow rates.

The RS and SP baskets fit into standard Rosedale strainer/filter vessels, available in carbon steel, and 304 or 316 series stainless steel.  Single basket models are pressure rated to 500 psi, with pipe connections from 3/4" to 4" NPT or ANSI flange.  Multi-basket models can hold from 2 to 23 baskets and are pressure rated  at 150 psi.  Pipe sizes are from 2" to 12" ANSI flange.

Designing an Optimum System

While carbon granules can act as a filtering media to remove solid particulate from a liquid, it is far more economical to pre-filter liquids entering a carbon adsorption vessel to avoid impeding the adsorption process. It is also recommended that a second filter be placed downstream of the carbon unit to catch any carbon particles that might be flushed out by the fluid stream. Rosedale bag filters are excellent in these roles.

A combination carbon adsorption and downstream filtering unit can be ordered. Available in the larger single-basket and all multi-basket vessels, it positions the carbon-holding basket inside a filter bag-holding basket. A variety of filter bag media is offered. See our inner basket section for 2 stage filtering in a single vessel. 

RS Style for Recirculating Systems

Flow enters from the top into a perforated cylinder around, which is packed activated carbon. Flow moves radially through the carbon and exits through the side wall, which is perforated and lined with 100-mesh screen.

Recirculating Systems Features

  • Spin-on cover, a solid plate with central opening
  • Perforated and (mesh-lined) column
  • Sorbent or other processing media
  • Perforated (and mesh-lined) outer cylinder
  • Solid plate bottom

SP Style for Single-Pass (One-Time) Processing

Flow enters from the top through a perforated cover and into the activated carbon bed. Flow moves down through the carbon and exits through the bottom plate, which is perforated and lined with 100-mesh screen.

​​Single-Pass Processing Features

  • Spin-on cover
  • Perforated plate
  • Sorbent or other processing media
  • Solid outer cylinder
  • Perforated (and mesh lined) bottom

Activated carbon is a "black magic" material that removes molecules of organic pollutants from various liquids by physical adsorption. (It does not act by chemical bonding.) It is a surface attraction, and the fine porous carbon particles have an incredibly large surface area. (Used carbon can be reactivated by oxidizing the adsorbed contaminant.)

Uses of carbon absorption include:

  • Purification of sugar syrups, liqueurs, glycerin, pharmaceuticals, etc.
  • Treatment of water to remove chlorine and odor, and improve color and taste.
  • Purification of process effluents, per EPA requirements.
  • Drying, degumming, and decolorization of fuel and lubricants, organic solvents, vegetable oil, and animal fats.