I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
Nanofiltration Toray Industries, Inc. (Tokyo, Japan; www.toray.com) has created what…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment Water Treatment

The commercial launch of 3-D-printed membranes

By Gerald Ondrey |

Last month, Nano Sun, a water technology start-up founded by a scientist from Nanyang Technological University (NTU; Singapore; www.ntu.edu.sg) launched a 3-D-printing facility to manufacture a new type of water-treatment membrane. Unlike conventional membrane-manufacturing processes, which use acids to make polymers porous so they can function as filters, Nano Sun uses a proprietary 3-D printer, which can print millions of polyvinylidene fluoride (PVDF) nanofibers per second. The fibers accumulate onto a backing material and are then compressed into an ultra-thin membrane sheet. By adjusting how thick or thin these unwoven fibers are layered on top of each other, the membrane can be made into microfiltration and ultrafiltration membranes. Further studies are now underway to develop improved anti-fouling additives, which can be combined with other materials during the printing process. The resulting membrane is said to have a faster water flowrate than conventional membranes, despite having a similar pollutant-rejection rate. This property makes it possible to build smaller wastewater-treatment plants, which lowers the costs for land, infrastructure and labor. The new membrane is also said to be more resistant to breakage and biofouling…
Related Content
Addressing water scarcity
The threat of water scarcity may not be a top concern for those who have readily available freshwater to meet…
Show Preview: Weftec 2019
The 92nd annual Water Environment Federation Technical Exhibition and Conference (Weftec; www.weftec.org) will be held September 21–25 at the McCormick…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
How separation processes profit from Industrial Internet of Things (IIoT) solutions
Up to 80% increased production rates in plastic recycling
Higher throughput and purity in sodium bicarbonate production with up to 15% less energy consumption
Help feeding nations with chemical filtering technologies
Not at the forefront of Industry 4.0?

View More

Live chat by BoldChat