Westinghouse Electric

About: Westinghouse Electric is a company organization based out in Cranberry Township, Pennsylvania, United States. It is known for research contribution in the topics: Brake & Signal. The organization has 27959 authors who have published 38036 publications receiving 523387 citations.

Uranium Removal from Ground Water Using Zero Valent Iron Media

Abstract: Removal of uranium from contaminated ground water using zero valent iron is currently under evaluation at several U.S. Department of Energy (DOE) facilities. Uranium removal by zero valent iron may occur via adsorption onto iron corrosion products, and by reduction to less soluble valence states by reactions with elemental iron. This research investigated the effects of water chemistry and surface precipitate buildup on the removal of soluble uranium by zero valent iron. Batch testing was performed to assess solution chemistry effects on uranium adsorption to the potential iron corrosion products, magnetite and a mixed valent amorphous iron oxide. Uranium adsorption to the simulated iron corrosion products was highly dependent on pH, and the concentration and speciation of the background electrolyte solution. Uranium removal via reduction by elemental iron closely approximated pseudo-first-order removal kinetics, despite the buildup of up to 40,000 monolayers of precipitated uranium on the iron surfaces. This indicates that the rate of uranium removal is not strongly dependent on the thickness of the adsorbed uranium layer. Short-term rates of uranium reduction were similar for all solutions tested, but long-term rates were highly dependent on water chemistry. Compared to deionized water, uranium removal rates were increased in sodium chloride containing solutions and reduced in sodium nitrate solutions. The strong influence of water chemistry on long-term reduction rates indicates that system design will require extnded testing with the ground water of interest.

Fuel cell generator containing self-supporting high gas flow solid oxide electrolyte fuel cells

Abstract: Axially elongated, electrochemical cell assembly containing a plurality of cell elements each made up of an electronically conductive, porous, inner electrode (47), an annular, solid electrolyte (45) contacting and surrounding said first electrode, and an annular, electronically conductive, porous, outer electrode (49) contacting and surrounding said electrolyte, with annular, electronically conductive, interconnection members (51) disposed between and bonded to cell elements, where the inner electrodes of the cell elements are electronically connected through the interconnection member, and the outer electrodes of the cell elements are physically and electronically segmented from each other; where a plurality of such cell assemblies can be connected by a sleeving means and placed in the generating chamber of an electrochemical cell generator, which also has an associated dual gaseous reactant input, at least one combustion product chamber, and a combustion product gas exhaust.

Methods of servicing an elevator system

Abstract: A method of integrating an expert system having a knowledge base of elevator trouble-shooting information into the working environment of elevator service personnel, without special training of such personnel, and without compromising the security of the knowledge base. The method includes an interactive initialization procedure which includes successive, successful user and knowledge base initiated communication links between the user and knowledge base, before actual access to the knowledge base is permitted.