Liquid Filtration -- Using thin (~50 μm) micro-porous metal and ceramic membranes
1. Solvent Filtration
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Provide particulate-free solvent to equipment or process usage, such as, HPLC solvent elution, solvent cleaning system, etc.
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Recovery of nano- and micro-sized catalysts, adsorbents, or products from reacted solvents
2. Water Filtration
- Remove micro-organisms, bacteria, viruses, and particulates from process water, tapwater, seawater in one pass.
3. Performance Attributes
4. Membrane filter size:
| Filter shape |
Disk cell |
Rectangular cell |
Large Module |
| Membrane working area |
3.0 cm2 |
40 cm2 |
Stack of 60 membrane sheets, up to 4 m2 |
5. Example 1. Filtration of Carbon Black N110 in 99% Isopropyl Alcohol (IPA) solution
| N110 particle size |
Membrane area |
Feed turbidity |
Permeate turbidity |
Filtration efficiency |
| 15-18 nm |
40 cm2 |
18.28 NTU |
0.00 |
> 90% |
Example 2. Filtration of cleaning solutions down to turbidity =0.00 for re-usage
De-ionized water and 70 wt.% isopropanol/water in two respective cleaning baths at 50oC working temperature are reused after filtration, resulting substantial reduction to generation of waste solutions.
Gas Filtration -- Using thin (~50μm) micro-porous metal and ceramic membranes
1. Uniform pore size
Nickel alloy membrane: adjustable between 20 nm to 1 μm
Coated-zirconia membrane with smaller pores than Nickel alloy membrane
2. Performance Attributes
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Filtration of particulates > 20 nm over a broad range of concentrations, particulate matters (inorganic, organic, micro-organism, viruses), and temperatures (cold, hot)
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Applicable to various gases, air, oxygen, nitrogen, hydrogen, steam, oil vapor, or hydrocarbons
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High permeance
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Cleanable for repeated usage
3. Example: Complete filtration of wood smoke (PM2.5 = 62,000 μm/m3)
bio-equip.cn Molecule Works Inc. (MWI) is a US-based technology company, registered in the State of Washington, and established in 2015 to pursue commercialization of three fundamental inventions licensed from Pacific Northwest National Laboratory (PNNL): thin porous metal sheet, thin-sheet zeolite membrane, and cassette-type membrane module. Since then, MWI has successfully demonstrated scale-up of all the critical membrane preparation steps and established its proprietary pilot manufacturing capabilities for production of thin porous metal and zeolite membrane sheets. The pilot-scale manufacturing capabilities enable production of a large number of 20cm x 20cm membrane sheets for application prototype development and customer sampling.
MWI has developed several innovative manufacturing methods and processes for production of the porous metal sheet-based membrane products at low cost. MWI has also made a series of new inventions for applications of its membrane products.
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