Article Abstract:
Researchers from 3M, Argonne National Laboratories and IBC Advanced Technologies have developed highly-selective membranes on disks that can reduce by as much as 90% the time and cost associated in analyzing radioactive chemicals in the environment. The researchers have combined source preparation, sample processing and counting into a single step, with one-liter samples taking less than 20 minutes to prepare. The disks are being used to test groundwater, surface water and nuclear-fuel storage-pool water at DOE sites and nuclear power plants.
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Article Abstract:
Researchers at the University of Minnesota are using immobile reactive groups to build improved barrier films. The immobile groups slow down the penetration of solutes, such as oxygen and water, as they diffuse across the membrane. They do not interfere with the steady-state transport across the film but significantly increase the time before permeability sets in. On the other hand, when mobile reactive groups are used, the steady-state permeability increases but the lag time remains unchanged.
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Article Abstract:
Cargill Analytical Services and Osmonics Inc have each received a $3.75- million grant from the NIST's Advanced Technology Program, which the companies will use in commercializing membrane technology. Osmonics will develop the membranes while Cargill will study their potential applications. Their first application would be the processing of edible oils to be followed by processing of products in the pharmaceutical and petrochemical industries.
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