Award Data

As part of its mission to protect human health and the environment, the U.S. Environmental Protection Agency develops and promotes innovative cleanup strategies that restore contaminated sites to productive use, reduce associated costs, and promotes environmental stewardship. Testing and characterization of the environment for potentially harmful contaminants is a costly endeavor. Current technolo ...

OPTRA has developed a novel approach to phase shift cavity ring down spectroscopy (PS-CRDS) using a Fourier transform infrared (FTlR) modulator to impose the spectrally-dependent amplitude modulation on a broadband JR light source. As with previous PS-CRDS measurements, we excite a resonant cavity with amplitude modulated energy and measure the phase shift of the modulated signal exiting the cavit ...

A SOURCE ANALYZER IS DESCRIBED THAT CAN MONITOR STACKS AND PROCESS STREAMS AND EXERCISE COMPUTER FEEDBACK CONTROL TO OPTIMIZE COMBUSTION OR OTHER PROCESSES TO MINIMIZE POLLUTION. THE PROPOSED MONITOR EMPLOYS THE OPTICAL TECHNIQUE OF IR GAS FILTER CORRELATION FOR ALL SPECIES, USESEXTRACTIVE SAMPLING BY MEANS OF A PROBE, IS SMALL IN SIZE, RELATIVELY INEXPENSIVE, AND CAN BE CONTROLLED BY AN INTERNALO ...

INCINERATION OF MOST INDUSTRIAL WASTES, INCLUDING MUNICIPAL SOLID WASTE, RESULTS IN THE EMISSION OF POTENTIALLY TOXIC TRACE METAL AEROSOLS. MOST OF THE TRACE METAL SPECIES IN THE WASTE FEED, SUCH AS LEAD, CROMIUM, MERCURY AND ARSENIC, COMPLETELY VOLATILIZE IN THE COMBUSTION ZONE, AND SUBSEQUENTLY CONDENSE AND CONCENTRATE IN THE SUBMICRON-SIZEDASH PARTICLES (FUME). THIS SIZE FRACTION CANNOT BE REMO ...

THE TECHNICAL OBJECTIVES OF THIS PROPOSAL ARE ORIENTED TOWARD THE DEVELOPMENT OF SOIL SURFACTANT FLUSHING AND WASHING AS A LOW-COST, LOW-IMPACT, LOW-RISK, EFFECTIVE TECHNIQUE FOR THE REMOVAL AND ULTIMATE DESTRUCTION OF THE ORGANIC CONTAMINANTS IN SOIL. THESE OBJECTIVES ARE: DEMONSTRATION OF THE EFFECTIVENESS OF AN IONIC SURFACTANT SOLUTION AT CONCENTRATIONS ABOVE THE CRITICAL MICELLE CONCENTRATION ...