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DuPont Water Solutions targets growth

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How fiber diameter & size affect filtration performance

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Mann+Hummel’s Filter Cube poised to go global

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HP Nanda, Global Vice President and General Manager, DuPont Water Solutions

For more than 70 years, DuPont Water Solutions has provided end-to-end water treatment solutions to customers across a range of geographies, markets and applications. As a worldwide leader in sustainable separation and purification technologies, DWS offers the most complete portfolio of technologies available, including ultrafiltration, nanofiltration, reverse osmosis, ion exchange, and electrodeionization technologies. As water …

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The main filter mechanisms of fiber material. (B) Filtration efficiency for particles with different diameters. (C) The main filtration effect based on particle size.

There are three primary property considerations of fibers for filtration performance — the choice of fibers, the process of producing the media and the final application.       When it comes to performance, the fundamental fiber properties are those that are designed to optimize volume, air permeability, and the pore size of the material.  …

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Jan-Eric Raschke, director of Mann+Hummel Public Air Solutions.

A successful air pollution reduction scheme instigated by filtration specialist Mann+Hummel in Germany is set to be replicated at “hot-spots” around the world. As the home of both Mercedes and Porsche, Stuttgart owes its status as Germany’s richest city to the automotive industry, but in January 2019, a first partial car ban was imposed, effectively …

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High-speed images of a ferrofluid droplet penetrating into a layer of parallel Polystyrene (PS) fibers electrospun for 3 minutes are shown in the figure.

Mohammad Jamali is pursuing a Ph.D. in Mechanical Engineering at Virginia Commonwealth University, where he is conducting research on understanding droplet mobility and penetration in nonwovens via numerical simulation and complementary experiments at the Porous Media and Multi-Phase Flows (PMMF) Laboratory. His project is supported by The Nonwoven Institute at North Carolina State University. After …

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Stormwater stream flowing out underground tunnel into river.

Why should we care about stormwater? Have you ever wondered what a mass extinction event might look like? Certainly, such events are well documented in the geologic record, involving gamma ray bursts, asteroids and comets, and perhaps the biggest killer so far, volcanism. Volcanism is commonly accepted as the cause of the Permian-Triassic extinction, also known as …

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