Summary of the technology
The technology offer relates to hydrophilically coated meshes and their use for separating mixtures of water and a hydrophobic liquid such as oil. The meshes allow water to pass through while the hydrophobic liquid is held back, effectively separating the two phases.
These meshes are lightweight, mobile, flexible, resistant to fouling and offer versatile application possibilities (horizontally, vertically, in cascades, different geometries etc.). Mesh and separated liquids can be recycled (benefit to e.g. oil sorption materials). No chemicals such as de-oilers are needed or used.
Potential application fields:
Industrial waste/process water, crude oil production, oil-spill accidents.
Description of the technology
The meshes for oil-water separation are weaves with < 100 µm pore size and defined geometries. The meshes can be e.g. made of metal such as steel, stainless steel, bronze, brass, or aluminum. The mesh surface is coated with a thin hydrophilic film such as hydrated aluminum oxide (Boehmite). The robust coating can be applied from the gas phase or from solution in a roll-to roll suitable process.
The coated mesh surface shows super hydrophilic characteristics with a contact angle for water of less than 10°.
Fast and efficient separation of oil-water mixtures is possible: < 5 ppm residual oil in the water phase can be achieved.
Current development status
Laboratory prototypes are available. TRL-4
Desired business relationship
- Technology selling
- Patent licensing
Intellectual property status
Patent already applied for