A new generation of high surface-area porous materials for removing atrazine from water supplies has been developed by researchers at the University of Illinois at Urbana-Champaign. The low-cost and wear-resistant fibers also can remove the hazardous contaminants chloroform and trichloroethylene, both byproducts of the commonly used chlorine disinfection process.
"We’ve shown that we can remove all these impurities to well below the maximum contaminant levels established by the Environmental Protection Agency," said James Economy, a professor of materials science and engineering at Illinois. "Having increased pore size and higher surface area, these fibers work much better than commercially available granulated activated carbon."
Atrazine is one of the most widely used herbicides in the United States. More than 75 million pounds of atrazine are applied annually. Spread on farm fields and residential lawns to control weeds, atrazine can work its way into local waterways and municipal drinking supplies. Millions of Americans unknowingly ingest atrazine with their tap water.
James E. Kloeppel | University of Illinois News Bure
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Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
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Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
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Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur
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The quality of materials often depends on the manufacturing process. In casting and welding, for example, the rate at which melts solidify and the resulting microstructure of the alloy is important. With metallic foams as well, it depends on exactly how the foaming process takes place. To understand these processes fully requires fast sensing capability. The fastest 3D tomographic images to date have now been achieved at the BESSY II X-ray source operated by the Helmholtz-Zentrum Berlin.
Dr. Francisco Garcia-Moreno and his team have designed a turntable that rotates ultra-stably about its axis at a constant rotational speed. This really depends...
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