Award Data

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Out of 50 million tons of fly ash generated each year in the United States, only27% is reused or recycled. The remaining 73% is landfilled which presentspotential environmental problems in the future. This projects main objective isto develop a new class of construction material from the Chemically Activated FlyAsh (CAFA) in conjunction with fine and coarse aggregates, and determinepertinent mec ...

Chromium plating sludge waste from hard and decorative chromium platingoperations is classified as a hazardous waste and its disposal is a majorenvironmental concern. Climax Research Services (CRS) will develop techniquesto recycle the chromium metal values in the sludge back into the domesticmetallurgical industry as purified aluminothermic chromium metal. This proposaladdresses initially the h ...

Cyanide forms in the lining of aluminum production cells due to the reaction ofcarbon, sodium and nitrogen. It is proposed it mix spent potling, a solid andhazardous waste, withmoderate temperatures to form environmentally benign compounds. The envisionedprocess will be suited for the in-situ treatment of potlining at individualsmelters and aims at converting this hazardous material into a usefu ...

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Low-temperature MBE grown GaAs (LT-GaAs) contains a high concentration of excess As which gives rise to ultra-fast carrier-trapping time and excellent radiation hardness. In as-grown layers most of this excess As is in the form of As(Ga) antisite defects, of which only ~1% are ionized. Thermal annealing upon overgrowth with a device structure or during device processing results in a decrease of ...

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Not Available The intent of this research is to develop an advanced nozzle for mixing and reacting iodine (I (sub 2) or I) and singlet-delta oxygen [O (sub 2) ((sup 1) increment)] flows in COIL devices. The ultimate goal is to develop a more efficient COIL. Specific avenues for the proposed research are: (1) Current COIL nozzles typically inject a mixture of diluent gas and molecular iodine into ...

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Not Available The most cost-effective, scalable format for the development of high power ladar and directed energy systems is to combine medium power laser modules into a coherently phased array. To this end, CTI proposes to develop a coherent synthetic aperture, synthetic wavelength ladar system based upon modular, tunable fiber lasers/amps. It is suggested that high spatial and spectral coheren ...