Novel barrier remediates chlorinated solvents

Article Abstract:

Researchers at the Pacific Northwest National Laboratory in Richland, WA, are preparing to field-test a new procedure for remediating groundwater contaminated with trichloroethylene and other chlorinated solvents. The technology, which is less costly than conventional pump-and-treat methods for remediating chromate-contaminated groundwater, can prove to be optimal for use at sites where groundwater is contaminated with both chromate and chlorinated solvents. Called in situ redox manipulation, the method creates a sort of an underground permeable reactive barrier, when sodium dithionite is injected into sediments through a series of wells. As groundwater passess through the barrier, metal contaminants are immobilized while organic solvent contaminants in the groundwater are destroyed.

Comment:

Pacific NW Natl Lab researchers plan to field-test new method for remediating groundwater contaminated w/ chlorinated solvents

Hazardous Waste Treatmnt,Storge,Disposl, Hazardous Waste Collection, Nonmanufacturing technology, Hazardous waste management

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Energy efficiency research gains in Department of Energy's 1999 budget request

Article Abstract:

The funding for research into energy efficiency and climate-change alleviation is considerably boosted in the $18-billion budget request of the US Energy Department for 1999. The efficient energy and renewable resource technology programs in the Energy Resources area of the department gained a 32.7% funding increase in the 1999 allocation, while funding for traditional environmental quality cleanup programs continued to be relatively flat. Funded renewable projects would include wind energy systems, which saw a 33% funding increase in the new budget; photovoiltaic energy-systems development, up 20.3%; and biomass/biofuel systems, up 52.6%.

Comment:

Funding for research into energy efficiency & climate-change alleviation gets boost in Energy Dept's $18-bil 1999 budget request

Government expenditures, Regulation and Administration of Communications, Electric, Gas, and Other Utilities, Energy Conservation, Dept of Energy

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