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
Georgia Institute of Technology Research News

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:

(Date:6/15/2016)... 15, 2016 Transparency Market ... Recognition Market by Application Market - Global Industry Analysis Size ... to the report, the  global gesture recognition market ... and is estimated to grow at a CAGR ... 2024.  Increasing application of gesture recognition ...
(Date:6/9/2016)... 9, 2016 Paris Police ... video security solution to ensure the safety of people and ... during the major tournament Teleste, an international technology ... services, announced today that its video security solution will be ... back up public safety across the country. The system roll-out ...
(Date:6/3/2016)... 2016 Das DOTM ... Nepal hat ein 44 Millionen ... Kennzeichen, einschließlich Personalisierung, Registrierung und IT-Infrastruktur, an ... und Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte internationale ... teilgenommen, aber Decatur wurde als konformste und ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... STACS DNA Inc., the ... at the Arkansas State Crime Laboratory, has joined STACS DNA as a Field Application ... team,” said Jocelyn Tremblay, President and COO of STACS DNA. “In further expanding our ...
(Date:6/23/2016)... , June 23, 2016  Blueprint Bio, a ... discoveries to the medical community, has closed its Series ... Matthew Nunez . "We have received a ... the capital we need to meet our current goals," ... provide us the runway to complete validation on the ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... exhibiting at the Pennsylvania Convention Center and will showcase its product’s latest features ... will also be presenting a scientific poster on Disrupting Clinical Trials in The ...
(Date:6/23/2016)... -- Amgen (NASDAQ: AMGN ) today announced a ... sciences incubator to accelerate the development of new therapies ... QB3@953 was created to help high-potential life science and ... stage organizations - access to laboratory infrastructure. ... "Amgen Golden Ticket" awards, providing each winner with one ...
Breaking Biology Technology:
Cached News: