Sterlitech Starts Offering Direct Contact Membrane Distillation Cell and Membrane Filters

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Sterlitech expands its Membrane and Process Development product line to include a bench-scale cross/tangential flow test cell for Direct Contact Membrane Distillation (DCMD).

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For more information about Sterlitech's DCMD Cell, please visit http://www.sterlitech.com/membrane-distillation.html

"Adding the DCMD test cell to the Membrane and Process Development product line complements this line of product by offering researchers a bench-scale test cell for evaluating Temperature-Driven membrane separation processes."

Sterlitech’s “plug and play” DCMD test cell is the 1st commercially available bench-scale cross/tangential flow test cells that mimics conditions representative of large-scale DCMD systems with minimal amounts of membrane or product, offering researchers fast and accurate performance data to easily evaluate the performance of membranes or membrane separation processes.

Membrane Distillation (MD) is widely employed in desalination, concentration in food industries, acid manufacturing, removing organic and heavy metals, and in treating radioactive waste. The MD process offers advantages such as:

  •     Low operating temperatures
  •     Low hydrostatic pressures
  •     Less susceptibility to fouling
  •     Ability to use renewable energy or waste heat

All of these translate into lower energy requirements, compared to high pressure or high temperature processes.

Sterlitech pioneers bench-scale cross/tangential flow test cells for Pressure-Driven and Osmotically-Driven membrane separation processes. “Adding the DCMD test cell to the Membrane and Process Development product line complements this line of product by offering researchers a bench-scale test cell for evaluating Temperature-Driven membrane separation processes,” said Sepideh Jankhah, Product Manager at Sterlitech Corporation.

The driving force in the MD process is the partial pressure difference between each side of the membrane. Under these conditions, volatile molecules evaporate at the hot liquid-vapor interface, flow through the membrane pores, and condense in the cold liquid-vapor interface.

The liquid to be treated is circulated in direct contact with the feed side of the membrane in the Sterlitech’s DCMD cell. A cold liquid solution is circulated in direct contact with the permeate side of the membrane. Both the feed and the cooling solution are circulated tangentially to the membrane surface using pumps at low or no hydrostatic pressures.

Hydrophobic flat sheet membranes, such as polytetrafluoroethylene (PTFE), polypropylene (PP) or polyvinylidene fluoride (PVDF), can be used in Sterlitech’s DCMD cell. The pore size for membranes used in the DCMD process generally ranges around 10nm to 1 um.

To obtain more information about Sterlitech’s DCMD cell or MD membranes, contact a Membrane and Process Development expert at Sterlitech at 1-877-544-4420 or sales(at)sterlitech.com.

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Mark Spatz
@sterlitech
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