Tag: "chlorinated" at biology news

Bacterium gobbles up chlorinated pollutants

...for firefighting practice -- and threw in leftover chlorinated solvents "to get rid of them." If chlorinated solvents were that easy to destroy, Gossett said, then tetrachloroethene, trichlorothene and other r...

New, Environmentally Friendly Technique For Separating Liquids Invented At UNC-CH

...l to replace hazardousorganic solvents, especially chlorinated liquids and freons." In June, DeSimone, the youngest person ever to hold a chair at UNC-CH,received the 1997 Presidential Green Chemistry Challenge Award from the U.S.Environmental Protection Agency for his earlier work with carbon dioxide. I...

Study At UNC-CH Shows Chlorinated Water Dramatically Cuts Strawberry Contamination

CHAPEL HILL - Washing strawberries with chlorinated water significantlycuts levels of bacteria, hepatitis A virus and other viruses that indicatepossible contamination by animal or human wastes, according to a new study. The research, conducted at the University of North Carolina at ChapelHill...

Can Contaminated Aquifers Restore Themselves?

..., hydrocarbons,metals, agricultural chemicals, and chlorinated compounds. Scientists fromthe U.S. Geological Survey (USGS) and others will discuss whether thesenaturally occurring processes can be relied on, by themselves or inconjunction with engineered systems, to restore contaminated aquifers forfuture use. ...

Groundwater Injection Process Filters Out Contaminants

...ect ISRM to beeffective in removing technetium and chlorinated solvents, such astrichloroethylene and uranium. R&D Magazine recently honored the ISRM technology as one of the 100 mostsignificant innovations of 1997. DOE has supported the project with about $4million since its initial development in 1993...

Researchers Offer DOD New Hazardous Waste Clean-Up Methods

...try called heavyhydrocarbons, dense liquids called chlorinated solvents, and difficult soilconditions, such as tight clays. "Most of the easy environmental remediation problems have been addressedwith readily available technology, frequently at great expense to industry,government and the public at large...

Sandia Decontamination Foam May Be Tomorrow's Best First Response In A Chem-Bio Attack

...ntaminating products typicallyare based on bleach, chlorinated solvents, or other hazardous or corrosivematerials, Tadros says. And many new and emerging decontaminants are designed towork against only a limited number of either chemical or biological agents. They also are expensive, he says. A new nerve-agent ...

Salmon Syndrome M74: Cause Still A Mystery

...spected a link with environmentalpollutantssuch as chlorinated organic compounds (PCB, dioxins, etc.), no such link has notbeenconfirmed. No evidence has been found that heavy metals, bacteria or viruses areassociated with M74. There seems to be a link between M 74 and pale colour in Baltic salmon roe.Therealso...

Innovative Process To Benefit Ground Water Clean-Up

...n caused by harmful substances such asgasoline and chlorinated solvents commonly used in industrial processes,photographic development and dry cleaning, says Sherwood Lollar, founder anddirector of U of T's Stable Isotope Laboratory. "These are things we come incontact with every day and only a small amount is n...

Mixing Radiation, Minerals, Toxic Waste Could Be Cleanup Boon -- Or Kaboom

...ical reactionsin which gamma rays break down toxic chlorinated chemicals. Silica and otheroxides -- clay -- in soil may behave similarly. Gamma rays are high energyX-rays given off by many of the highly radioactive wastes produced in weaponsmanufacture, such as cobalt-60. The good news is that gamma irradiation ...

Bacteria That Gorge On Rotting Waste Can Break Down DDT

...e used toclean up land contaminated with dangerous chlorinated pesticides such as DDT,according to Canadian scien...ss called bioremediation. The soil bacteriaconvert chlorinated pesticides to less toxic by-products by using enzymes knownas dehalogenases to chop out offending ch...

USGS finds elevated levels of organochlorine pesticides in Aleutian bald eagles

...nted to kill agricultural insect pests. These chlorinated hydrocarbons work mainly by blocking nerve impulses necessary for normal bodily functions. Unfortunately, they are long-lived, toxic to most animals and can be converted to even more deadly compounds as they degrade or when eaten and r...

Deadly for bacteria, great for consumers

...reduction potential," says Hung. "When you compare chlorinated water with electrolyzed water, there is a difference in the oxidation-reduction potential, even though they have the same chlorine concentration." The exact role of oxidation-reduction in destroying bacteria is still being investigated, he says. ...

LabNotes -- Research highlights from Pacific Northwest National Laboratory

...y was created in 1977. Biotechnology strikes out chlorinated solvents - A Pacific Northwest National Laboratory...ling environmental concern: halting the seepage of chlorinated solvents. In-Situ Redox Manipulation, or ISRM, uses standard groundwater monitoring wells to inject...

Sandia-developed formulation among products selected to help rid U.S. facilities of anthrax

...taminating products typically are based on bleach, chlorinated solvents, or other hazardous or corrosive materials. Many are designed to work against only a limited number of either chemical or biological agents. The Sandia formulation works against a wide variety of both chemical and biological agents and is n...

Microbe first to break down PCBs

...ies had been described by scientists that "reduce" chlorinated organic molecules of any kind. Today several are known. However, the bacterium in UMBI/ MUSC study is the first found to break the chlorine bonds in the critical ortho position, say the researchers. The distinction raises hopes for the potential comp...

A greener, cleaner groundwater cleanup process

...ry (INEEL) is making the difficult job of removing chlorinated solvents from groundwater much easier. Finding s...ofessionals. Groundwater plumes contaminated with chlorinated solvents are common and typically present unique obstacles related to the chemicals' high density an...

NSF/EPA team up on grants to treat pollution with plants

...atic hydrocarbons, polychlorinated bi-phenyls, and chlorinated pesticides. Knowledge will be unearthed to better understand three scientific problems: the microbial ecology of chemical-degrading bacteria that live in the root systems of monoterpene-producing plants; the role of chemicals produced by roots that...

Endangered freshwater mussels saved

...ly reduced chronic water pollution. Elimination of chlorinated wastewater discharges into the Clinch River from sewage treatment plants by the department of Environmental Quality has removed this potentially lethal pollutants to downstream mussel populations in Virginia and Tennessee. Neves' research is funded i...

NATO picks promising pollution solution at NASAs Marshall Center for pilot study program

...ound water. In this case, the focus is on removing chlorinated volatile organic compounds from soils and ground water. This contamination occurred from former waste management activities at the facility before the potentially harmful results of such activities were known. In 1994, the U.S. Environmental Protect...

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