HOME >> BIOLOGY >> NEWS
Unique two-part macroemulsion offers new approach to cleaning up contaminated aquifers

Environmental engineering researchers have developed a novel two-part approach for cleaning up toxic chlorinated solvents spilled into underground water supplies from former dry cleaning and industrial operations.

The patent-pending technique, which uses a macroemulsion composed of alcohol and food-grade surfactants, simultaneously reduces the density of the pollutant to keep it from sinking farther into the groundwater and helps separate it from soil particles so it can be flushed out. Known as "density modified displacement," the approach could cut the cost of environmental remediation by reducing both the time required for clean up and the amount of contaminated effluent that must be treated.

The technique was reported in the August 15 online version of the journal Environmental Science and Technology, and will be published in the journal's September 15th print issue. Researchers from the Georgia Institute of Technology, the University of Michigan and the University of Oklahoma participated in the research, which was sponsored by the U.S. Environmental Protection Agency (EPA).

"We're trying to make remediation of contaminated groundwater more efficient, because it is now largely driven by economics," said Kurt Pennell, an associate professor in Georgia Tech's School of Civil and Environmental Engineering. "The idea is to make this process so efficient that the cost of cleaning up a site is less expensive than traditional approaches which rely on groundwater extraction and long-term monitoring."

The technique offers a new approach to removing dense nonaqueous phase liquids (DNAPLs), including tetrachloroethane (PCE), trichloroethene (TCE) and chlorobenzene (CB), heavier-than-water compounds. Relatively stable chemicals that don't readily degrade, their concentrations in groundwater must be kept to a few parts-per-billion (ppb) to meet environmental standards.

"A single 55-gallon drum of one of the compounds can con
'"/>

Contact: John Toon
john.toon@edi.gatech.edu
404-894-6986
Georgia Institute of Technology Research News
17-Sep-2003


Page: 1 2 3

Related biology news :

1. Unique partnership between UH, FDA opens path for scientific exchange
2. Unique fleet of underwater vehicles to gather elusive environmental data
3. Unique feeding behavior discovered for snakes
4. Unique population of muscle stem cells found in mice
5. Unique social system found in famous Tsavo lions
6. Unique national park for orchids to be declared in Africa
7. Unique genetic alteration in presenilin 1 gene predisposes some Caribbean Hispanics to early-onset Alzheimers disease
8. Unique UNC study confirms suspected worldwide epidemic of childhood obesity
9. Scientists find just how discriminating a worm can be: Unique system of overlapping odor sensors discovered
10. Unique study reveals new details on how genes are transcribed
11. Unique international conference to focus on effectiveness, safety of medicinal herbs

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/14/2016)... March 14, 2016 http://www.apimages.com ... --> - Renvoi : image disponible via ... --> --> DERMALOG, le ... de nouveaux lecteurs d,empreintes digitales pour l,enregistrement des ... sera utilisé pour produire des cartes d,identité aux ...
(Date:3/10/2016)... --  Unisys Corporation (NYSE: UIS ) today announced ... testing its biometric identity solution at the Otay Mesa border ... identify certain non-U.S. citizens leaving the country. ... determine the efficiency and accuracy of using biometric technologies in ... until May 2016. --> the United States ...
(Date:3/8/2016)... , March 8, 2016   Valencell , ... today announced it has secured $11M in Series ... Tech, a new venture fund being launched by ... participation from existing investors TDF Ventures and WSJ ... to continue its triple-digit growth and accelerate its ...
Breaking Biology News(10 mins):
(Date:5/3/2016)... ... May 03, 2016 , ... ... clinics and IVF laboratories. A contingency of reproductive endocrinologists, including Dr. George ... women experiencing infertility and to help them build families. , Ovation Fertility is ...
(Date:5/2/2016)... ... ... StarNet Communications Corp, ( http://www.starnet.com/ ) a leading publisher of remote Linux and ... its flagship X-Win32 PC X server. The new modules enable X-Win32 to safely ... encrypted SSH. , Traditionally, users of PC X servers deploy the XDMCP protocol to ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... pain medicine, is excited to announce the launch of the Proove Health ... studies, volunteerism, and education to promote the use of personalized medicine for tackling ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... to transform technology into a viable company, CereScan’s CEO, John Kelley, joined other ... a recognized leader and mentor in the Denver area business community, shared his ...
Breaking Biology Technology:
Cached News: