Navigation Links
New low-cost, nondestructive technology cuts risk from mercury hot spots
Date:10/25/2013

Hot spots of mercury pollution in aquatic sediments and soils can contaminate local food webs and threaten ecosystems, but cleaning them up can be expensive and destructive. Researchers from the Smithsonian Environmental Research Center and University of Maryland, Baltimore County have found a new low-cost, nonhazardous way to reduce the risk of exposure: using charcoal to trap it in the soil.

Mercury-contaminated "Superfund sites" contain some of the highest levels of mercury pollution in the U.S., a legacy of the many industrial uses of liquid mercury. But despite the threat, there are few available technologies to decrease the risk, short of digging up the sediments and burying them in landfillsan expensive process that can cause significant ecological damage.

In a new study published in the journal Environmental Science & Technology, Cynthia Gilmour (SERC), Upal Ghosh (UMBC) and their colleagues show that adding activated carbon, a form of charcoal processed to increase its ability to bind chemicals, can significantly reduce mercury exposure in these highly contaminated sites. With funding and support from several industry and federal partners, the team tested the technology in the laboratory with mercury-contaminated sediments from four locations: a river, a freshwater lake and two brackish creeks. To reduce the harm from mercury, the sorbents also had to decrease the amount of methylmercury taken up by worms.

"Methylmercury is more toxic and more easily passed up food webs than inorganic mercury," said Gilmour, the lead author on the study. "Unfortunately, methylmercury is produced from mercury contamination by natural bacteria. To make contaminated sites safe again, we need to reduce the amount of methylmercury that gets into animals."

Added at only 5 percent of the mass of surface sediments, activated carbon reduced methylmercury uptake by sediment-dwelling worms by up to 90 percent. "This technology provides
'/>"/>

Contact: Kristen Minogue
minoguek@si.edu
443-482-2325
Smithsonian
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Bio-Rads Droplet Digital PCR technology highlighted at ASHG Annual Meeting
2. Laser technology sorting method can improve Capsicum pepper seed quality
3. NTU scientists make breakthrough solar technology
4. Beaumont named to 2013 InformationWeek 500 list of top technology innovators
5. Cytos Biotechnology Presents Additional Results From Phase 2a Study of CYT003 for the Treatment of Allergic Asthma
6. New NIH awards focus on nanopore technology for DNA sequencing
7. Biometrics & Technology Sector Leaders Briefing: NXT-ID, Intel, Sony, Facebook, Dell
8. Journal of Spinal Cord Medicine publishes special issue on assistive technology
9. Techne Corporation Appoints Dr. J. Fernando Bazan As Chief Technology Officer
10. Neurotechnology Announces NCheck Bio Attendance 2.0 Biometric Time and Attendance Software
11. Iris Biometrics Leader, EyeLock, Redefines Identity Authentication, Announces Availability of Software Development Kit to Accelerate Deployment of Technology
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New low-cost, nondestructive technology cuts risk from mercury hot spots
(Date:7/21/2014)... often results from the strength of immune response, rather ... rather than attacking the virus, might be a better ... the University of Washington, Seattle. She and her collaborators ... that for the H7N9 influenza, and their work has ... this highly virulent strain. The research is published ahead ...
(Date:7/21/2014)... Urban stormwater runoff is causing problems for the ... Environmental Protection Agency found stormwater runoff to be ... environments in rivers, streams, lakes, ponds, reservoirs, bays, ... can harm fish and wildlife populations, foul drinking ... from North Carolina State University are looking to ...
(Date:7/21/2014)... of life are now being developed to try and ... of species. Specifically, a recent model proposed by Petri ... accounts for species interactions with various degrees of symmetry, ... previous, simpler models, which apply random fitness levels to ... demonstrate that the resulting replicator ecosystems do not appear ...
Breaking Biology News(10 mins):Potential new flu drugs target immune response, not virus 2Filter bed substrates, plant types recommended for rain gardens 2Refined biological evolution model 2
... Data publishers should have the option of submitting their ... paper commissioned by the Global Biodiversity Information Facility (GBIF). ... recommendations made by Mark Costello and co-authors in the ... biodiversity data publication , freely available for download ...
... cells from patients with inherited heart muscle disease can ... to patients, including the possibility of testing new treatments ... cell model matches that of the clinical features of ... disease associated with sudden cardiac death Landmark study published ...
... more than 6,000 species of frogs in the world lay ... eggs out of water. This behavior protects the eggs from ... their risk of drying out. Justin Touchon, post-doctoral fellow at ... Panama may be altering frogs, course of evolution. By analyzing ...
Cached Biology News:Peer review option proposed for biodiversity data 2National Heart Centre Singapore develops world's first human heart cell model 2National Heart Centre Singapore develops world's first human heart cell model 3
(Date:7/22/2014)... July 22, 2014 The next session ... 9th, 2014 and will comprise of the increasingly popular ... The TechTrainings is a series of technical hands-on classes ... help them reach the next step in their professional ... is taught by Jennifer Kang, Senior Statistician at Genentech ...
(Date:7/21/2014)... (PRWEB) July 21, 2014 With ... simple programming, the new Cole-Parmer® Digital Gear ... is easy to operate for automated process applications. ... hands-free dispensing. The batch count function counts down ... or totalizer tracks amount dispensed across multiple cycles. ...
(Date:7/21/2014)... EUGENE, Ore. (July 21, 2014) The yield ... of Oregon have developed a low-energy, solution-based mineral substitution ... that could find use in electronics and alternative energy ... on the cover of the July 21 issue of ... most citations of research in the inorganic and nuclear ...
(Date:7/21/2014)... July 21, 2014 Sleep disturbances ... are closely correlated with depression. According to a ... "About three quarters of depressed patients have ... 40% of young depressed adults and 10% of ... symptoms cause huge distress, have a major impact ...
Breaking Biology Technology:Clinovo TechTrainings: Next Session of SAS and CDISC Classes Start 9th September, 2014 2Clinovo TechTrainings: Next Session of SAS and CDISC Classes Start 9th September, 2014 3New Easy-View Cole-Parmer Digital Gear Pump Drive Makes Performance Monitoring Effortless 2Oregon chemists eye improved thin films with metal substitution 2Open Label Data on Enhanced Sleep Released by JayMac Pharmaceuticals, LLC 2Open Label Data on Enhanced Sleep Released by JayMac Pharmaceuticals, LLC 3
... SHANGHAI, China, April 30 /Xinhua-PRNewswire/ -- Today, ... and NovaSecta in,their CRO Service Alliance CROSA ... companies. Tigermed,s expertise in clinical,development complements the ... the alliance., Sundia Meditech, United PharmaTech, ...
... add ... ... TSX symbol: SBS, CALGARY, April 30 /PRNewswire-FirstCall/ - Botaneco, a wholly-owned,subsidiary ... Croda Enterprise Technology, part of Croda,International Plc, an international manufacturer of speciality ingredients,with ...
... For-Profit Healthcare Companies, EL SEGUNDO, Calif., April ... care services, announced it has been honored for,the ... of the Top 125,ranking companies of employee-sponsored workforce ... that demonstrate a deep,commitment to learning and development ...
Cached Biology Technology:Shanghai CRO Service Alliance Adds Clinical Development Capabilities 2Shanghai CRO Service Alliance Adds Clinical Development Capabilities 3Botaneco signs feasibility agreement with Croda to develop specialty crop oil formulation 2Botaneco signs feasibility agreement with Croda to develop specialty crop oil formulation 3DaVita Honored for 4th Year as Training Top 125 Recipient 2
... client/server version of Freezerworks Unlimited includes 2 clients ... and facilitates the sharing of freezers by multiple ... Network Client/Server ... 13 in monitor with 256 colors; OS 8.6 ...
... Amplification Kit, 500 reactions. Prepare circular ... 4-6 h.Generate microgram quantities of template ... material.Use amplified DNA directly for cycle ... or M13 liquid cultures, colonies, plaques, ...
...
Request Info...
Biology Products: