Award Data

Contaminated groundwater presents a widespread environmental challenge in America today. Existing treatment methods are imperfect in that they are either slow, expensive, or unable to treat the full spectrum of groundwater contaminants. Prior work has demonstrated that zero valent iron can detoxify groundwater contaminated with halogenated hydrocarbons and other toxic chemicals. The be ...

Of the 300 million tons of plastic produced per year most will require 500 years to biodegrade. Currently only 9% is recycled, and 50 million tons of thermoset plastic produced annually that can't be recycled. _x000D_ _x000D_ This project will develop a sustainable and easily biodegradable polycarbonate plastic that is uniquely a recyclable thermoset resin. We call it a thermosetting thermoplastic ...

A TWO-DIMENSIONAL NUMERICAL MODEL BASED ON A HYBRID FINITE ELEMENT METHOD WITH MESH ADAPTATION IS PROPOSED TO CALCULATE GROUNDWATER FLOW AND POLLUTANT TRANSPORT IN UNSATURATED POROUS MEDIA. THE ALGORITHM IS MODIFIED TO ENHANCE COMPUTATIONAL SPEED AND STORAGE, AND INCORPORATES PETROV-GALERKIN WEIGHTING FOR THE ADVECTION TERMS. NONLINEARITIES ASSOCIATED WITH UNSATURATED SOIL PROPERTIES, ATMOSPHERIC ...

The goal of this research project is to develop a compact portable instrument for the measurement of trace hydrocarbon vapors with high sensitivity and high chemical selectivity using the jet-resonance enhanced multiphoton ionization (jet-REMPI) technique. This technology already has been proven to be highly effective for the real-time measurement of complex mixtures of hydrocarbon ...

CHLORINE RANKS AMONG THE TEN MOST IMPORTANT COMMODITY CHEMICALS. APPROXIMATELY 54% OF THE TOTAL U.S. CHLORINE PRODUCTION IS LIQUEFIED FOR SALE OR FOR IN-PLANT TRANSPORT. TAIL GAS PRODUCED FROM THE CHLORINE LIQUEFACTION PROCESS IS THE PRINCIPAL SOURCE OF CHLORINE-CONTAINING WASTE GAS STREAMS PRODUCED BY CHLOR-ALKALI PLANTS. CURRENTLY, SUCH STREAMS ARE TREATED BY ABSORPTION IN CARBON TETRACHLORIDE; ...

Cryptosporidium, originating from contamination of public drinking water supplies, ponds, rivers, or swimming pools, have cause large-scale and deadly outbreaks, which became a major cause of waterborne infectious diseases. Since 1991, the percent of outbreaks attributable to Cryptosporidium has doubled, and in the 1993-1994 period, 17 percent of all outbreaks were caused by Cryptosporidium. In 19 ...

It is estimated that there are approximately 300 million tires discarded each year in the United States and this is in addition to the 800 million scrap tires that reside in landfills and tire dumps throughout the country. About 180 million are recycled, and the remaining 120 million scrap tires are discarded (legally or illegally) in landfills or tire dumps. Current tire reuse technologies offer ...

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Over 820 million Indians, about 65% of its population, cook on polluting open fires, causing ~1 million premature deaths annually. Fifty million households have no electricity. The Power Stove is a household energy solution combining clean cooking and reliable, ondemand power. Clean combustion and thermoelectric power technology, make it a high performance, user desirable solution based on low cos ...

As wildfires are increasing in prevalence and intensity there is a need for miniaturized, lower cost, and easily portable air sensor systems that provide accurate information to air quality and public health managers, communities, and researchers, so that the public can be protected and timely decisions can be made. Fixed site measurement stations are large and expensive. More dense networks of sm ...