Featured Research

from universities, journals, and other organizations

Melting The Way To Environmental Remediation

Date:
July 16, 2002
Source:
Los Alamos National Laboratory
Summary:
The U.S. Department of Energy's Los Alamos National Laboratory has begun the next phase of its Non-Traditional In Situ Vitrification (NTISV) technology that underwent a successful demonstration at Material Disposal Area V in Technical Area 21. The technology uses electrical energy to convert contaminated soil buried at the site into an inert, environmentally benign glass-like block.

LOS ALAMOS, N.M., June 4, 2002 -- The U.S. Department of Energy's Los Alamos National Laboratory has begun the next phase of its Non-Traditional In Situ Vitrification (NTISV) technology that underwent a successful demonstration at Material Disposal Area V in Technical Area 21. The technology uses electrical energy to convert contaminated soil buried at the site into an inert, environmentally benign glass-like block. The site is located at the east end of DP Road and Trinity Drive in the townsite.

The hot test coring phase of the NTISV project involves a sampling section of an inactive absorption bed that was heated in April, 2000 to vitrify - convert the soil to a glass-like substance – in order to demonstrate an innovative technology for potential use in cleaning up similar sites at the Laboratory. The vitrified mass has now cooled to approximately 100 degrees F, and the low-level radionuclides present in the soil demonstration section of the absorption bed are now expected to be immobilized within the vitrified mass in a non leachable state. The scope of this current field effort is to core and collect samples of the vitrified mass, then analyze them for their mineralogical and chemical constituents. The samples will be collected using a drilling rig and a dust-suppression system to protect the public and workers from potential exposure to low-level radiation contamination during drilling activities. The samples will be submitted to an off-site contract laboratory for analysis and the data will be used to verify the effectiveness of the NTSIV technology.

The site once served as a disposal area for a now-closed facility that laundered radionuclide-contaminated garments. The facility had three discharge-absorption beds that accepted about 40 million gallons of waste over ten-years from 1945-1961. The waste contained inorganic compounds and radionuclides, including americium, plutonium, uranium, strontium, and tritium. The area was selected for the demonstration because of its variety of contaminants. The central section of the northernmost absorption bed, an area roughly 20 feet long, 30 feet wide and 22 feet deep, was vitrified in April 2000.

This demonstration is being conducted in accordance with the Laboratory's Resource Conservation and Recovery Act (RCRA) corrective action program that is regulated by New Mexico Environment Department (NMED) requirements. The Environmental Remediation (ER) project prepared and submitted an interim measures plan to the NMED in February 2000, which approved the interim measures plan in April 2000.

In situ vitrification technology has successfully been used at a number of contaminated sites over the past 20 years to stabilize a broad range of contaminants in various soil conditions. Nontraditional ISV differs from traditional ISV in that it melts material from the bottom up instead of the top down.

Los Alamos National Laboratory is operated by the University of California for the National Nuclear Security Administration (NNSA) of the U.S. Department of Energy and works in partnership with NNSA's Sandia and Lawrence Livermore national laboratories to support NNSA in its mission.

Los Alamos enhances global security by ensuring safety and confidence in the U.S. nuclear stockpile, developing technologies to reduce threats from weapons of mass destruction and improving the environmental and nuclear materials legacy of the cold war. Los Alamos' capabilities assist the nation in addressing energy, environment, infrastructure and biological security problems.


Story Source:

The above story is based on materials provided by Los Alamos National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

Los Alamos National Laboratory. "Melting The Way To Environmental Remediation." ScienceDaily. ScienceDaily, 16 July 2002. <www.sciencedaily.com/releases/2002/07/020716080908.htm>.
Los Alamos National Laboratory. (2002, July 16). Melting The Way To Environmental Remediation. ScienceDaily. Retrieved September 19, 2014 from www.sciencedaily.com/releases/2002/07/020716080908.htm
Los Alamos National Laboratory. "Melting The Way To Environmental Remediation." ScienceDaily. www.sciencedaily.com/releases/2002/07/020716080908.htm (accessed September 19, 2014).

Share This



More Matter & Energy News

Friday, September 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Virtual Reality Headsets Unveiled at Tokyo Game Show

Virtual Reality Headsets Unveiled at Tokyo Game Show

AFP (Sep. 18, 2014) Several companies unveiled virtual reality headsets at the Tokyo Game Show, Asia's largest digital entertainment exhibition. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com
Apple's iOS8 Includes New 'Killswitch' To Curb Theft

Apple's iOS8 Includes New 'Killswitch' To Curb Theft

Newsy (Sep. 18, 2014) Apple's new operating system, iOS 8, comes with Apple's killswitch feature already activated, unlike all the models before it. Video provided by Newsy
Powered by NewsLook.com
Stocks Hit All-Time High as Fed Holds Steady

Stocks Hit All-Time High as Fed Holds Steady

AP (Sep. 17, 2014) The Federal Reserve signaled Wednesday that it plans to keep a key interest rate at a record low because a broad range of U.S. economic measures remain subpar. Stocks hit an all-time high on the news. (Sept. 17) Video provided by AP
Powered by NewsLook.com
Space Race Pits Bezos Vs Musk

Space Race Pits Bezos Vs Musk

Reuters - Business Video Online (Sep. 16, 2014) Amazon CEO Jeff Bezos' startup will team up with Boeing and Lockheed to develop rocket engines as Elon Musk races to have his rockets certified. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins