3D Printed Membranes for Water Osmosis
Researchers at Singapore University of Technology and Design and Nanyang Technological University have been investigating methods to print microfiltration membranes and spacers using a variety of AM and hybrid 3D printing process.
By: IRIS 3D Solutions
The membranes and membrane spacers are used extensively in water treatment processes such as microfiltration / nanofiltration, reverse osmosis and membrane distillation.
Membrane spacers are traditionally made by extrusion and welding of low-density polypropylene filaments into a mesh. This separates the membranes, which themselves are normally manufactured from porous ceramics, or polymers.
Ceramic membranes have a high cost due to the high temperature requirements of the manufacturing process. Polymer membrane manufacture is so complex it requires accurate control and monitoring of process parameters that it similarly adds to the costs.
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