Navigation Links
Water, water, everywhere… but is it safe to drink?
Date:2/20/2011

This release is available in French.

"Over the last couple of generations, there has been a huge amount of groundwater pollution worldwide, and this has had a negative impact on our drinking water supply," says Barbara Sherwood Lollar, Canada Research Chair in Isotope Geochemistry of the Earth and the Environment at the University of Toronto.

Sherwood Lollar is taking part in the THINK CANADA Press Breakfast Sunday at AAAS. Her research examines society's efforts to reverse and stop groundwater pollution, and the effectiveness of bioremediation technologiesusing microbes to clean up organic contaminants such as petroleum hydrocarbons (oil, gasoline or diesel) or chemicals used in the electronics or transportation industries.

While the disposal of these organic contaminants tends to be well regulated today, this has not always been the case. Lax regulations and enforcement during the period immediately after the Second World War has left Europe and North America with a legacy of past contamination.

"This contamination has had a pervasive impact on the environment," says Sherwood Lollar. "It is still out there, and it needs to be dealt with."

Over the past decade, many techniques used to clean up groundwater contamination have harnessed the power of microbiology and the work of geochemists like Sherwood Lollar. "We are not genetically engineering microbes," she explains. "In many settings, naturally occurring microbes feed off the organic contaminants and, in the process, convert them to non-toxic end products."

Until now, the real difficulty has been in proving that the process exists and that the microbes are actually cleaning up the contaminants. Sherwood Lollar has developed techniques that show where the clean-up is happening and, just as importantly, where it is not.

"Elements like carbon have different stable isotopes: Carbon-12 and Carbon-13. One is slightly heavier than the other, and the microbes tend to feed mostly on the lighter one. When the microbes have been working for some time, the ratio of heavy-to-light carbon will change. It is this changereferred to as an isotopic signaturethat lets us know the water is being cleaned up," says Sherwood Lollar.

By cleaning up contaminated groundwater, it is possible to recuperate what would otherwise be a lost resource. The technique is starting to be used by regulators, and Sherwood Lollar is working with an international group of scientists to put together a guidance document for the United States Environmental Protection Agency (EPA).

This will provide a set of recommendations about use in the field for practitioners, which will be a first step towards mainstreaming the technique.

"It's a common misconception that waterand especially our supply of groundwateris a renewable resource," says Sherwood Lollar. "But it isn't. So, it is particularly important that we manage it well and that we do whatever we can to conserve, protect and remediate what we have."

Sherwood Lollar will present her research and answer questions from the press, as part of the THINK CANADA Press Breakfast on the theme of water. The breakfast will be held in Room 202A of the Washington Convention Center at 8 a.m. on February 20, 2011 and will feature Canadian research experts across natural sciences and engineering, health, social sciences and humanities.


'/>"/>
Contact: Michael Adams
michael.adams@sshrc-crsh.gc.ca
613-219-7523
Natural Sciences and Engineering Research Council
Source:Eurekalert

Related biology news :

1. The green machine: Algae clean wastewater, convert to biodiesel
2. When worms stick together and swim on thin water, what happens and why does it matter?
3. Water, water everywhere focus of new sustainability project
4. Pitt researcher says simple polymer-based filter successfully cleans water, recovers oil in Gulf of Mexico tests
5. Polymer-based filter successfully cleans water, recovers oil in Gulf of Mexico test
6. Discovery may lead to safer drinking water, cheaper medicine: Queens University researchers
7. Inventor honored for tech improving access to clean water, healthcare, and business development in India
8. Water, fair and foul
9. Is cherry juice a new sports drink?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... 2017 Today HYPR Corp. , leading ... component of the HYPR platform is officially FIDO® ... security architecture that empowers biometric authentication across Fortune 500 ... secured over 15 million users across the financial services ... home product suites and physical access represent a growing ...
(Date:3/30/2017)... HONG KONG , March 30, 2017 ... developed a system for three-dimensional (3D) fingerprint identification by adopting ground ... technology into a new realm of speed and accuracy for use ... applications at an affordable cost. ... ...
(Date:3/24/2017)... The Controller General of Immigration from Maldives Mr. Mohamed Anwar ... the prestigious international IAIR Award for the most innovative high security ePassport ... ... Maldives Immigration Controller General, Mr. ... on the right) have received the IAIR award for the "Most innovative ...
Breaking Biology News(10 mins):
(Date:8/16/2017)... ... August 16, 2017 , ... ... different cell type. Many treatments for specific cancers, such as breast, prostate, or ... treatment is androgen deprivation therapy for advanced prostate cancer. , This therapy ...
(Date:8/16/2017)... , Aug. 16, 2017  Kingfisher Talent, the ... development, and Virdis Group, global executive search specialists in the ... enables clients to leverage the expertise and reach of both ... here in the Boston biotech hub, ... leadership talent throughout the US, Canada ...
(Date:8/15/2017)... ... , ... Any expert in stem cell research or stem cell medicine knows ... a century. Despite their essential roles in human health and regenerative medicine, adult ... developed for this purpose also tag other, more abundant, non-stem tissue cells ( See ...
(Date:8/14/2017)... ... August 14, 2017 , ... ... antibodies. Key researchers in the antibody community have recently come together to address ... antibodies in the laboratory. , The team at Thermo Fisher ...
Breaking Biology Technology: