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Dangerous radioactive wastefulness has been trapped inside solid trash in a first - of - its - form manifestation , according to a statement from the Pacific Northwest National Laboratory ( PNNL ) in southeastern Washington .
In the presentation , scientist at PNNL , a part of the U.S. Department of Energy ( DOE ) , sundry humiliated - activity radioactive waste — that is , waste with very little concentrations of radioactivity — with swimming glass , then let it harden into a durable , solid material . This so - called vitrification process immobilized the radioactive and chemical materials within the glass , the PNNL said .
Scientists melt radioactive waste into glass at the Pacific Northwest National Laboratory in southeastern Washington.
" The radioactive elements are chemically bandage as part of the glass material , " Will Eaton , who go the trial for PNNL , tell Live Science . " And the chalk material is a durable waste form that isolate the radioactivity from the surroundings for a very long sentence . " [ 5 unremarkable Things That Are Radioactive ]
For the experimentation , conducted in April , scientist from PNNL ’s Radiochemical Processing Laboratory took about 3 gallons ( 11 liters ) of depressed - bodily function waste matter from a tank at the Hanford Site , a decommissioned atomic product building complex located next to PNNL in southeastern Washington . This small - ordered series demonstration is a key step forward in the goal of treating meg of gallons of risky waste that was render from more than 40 years of atomic number 94 production at Hanford , whose reactors produced atomic number 94 for America ’s defense programme , PNNL said .
" The experience from this test will help us as we prepare for full - scale operation , " Albert Kruger , a deoxyephedrine scientist with the DOE ’s Office of River Protection ( ORP),said in a program line . The ORP , which is responsible for the recovery , handling and disposal of the 56 million gallons ( 211 million liters ) of chemical substance and radioactive dissipation salt away in underground tanks at Hanford , did the run in partnership with PNNL and Washington River Protection Solutions , which manages Hanford tank car surgery .
Molten glass illuminates a glob of red, radioactive waste as it is vitrified into solid glass.
To ensnare the wild liquid waste in glass , scientists commix it with glass - form materials , such as silica , and then slow pumped the salmagundi into a melter that get to 2,100 degree Fahrenheit ( 1,148 academic degree Celsius ) . At the ending of the test , the scientist had about 20 lbs . ( 9 kg ) of glass .
" This successful test confirm the science and engineering advance , " Eaton tell in the statement . " Seeing actualHanford low - activity wastebeing exchange to glass is really exciting . It link together 20 years of oeuvre from the design and structure of the Waste Treatment Plant to the research and examination that has supported that effort . "
If the glass breaks , as it did in the trial , " then you have multiple pieces of Methedrine , " Eaton told Live Science in an email . " The waste element are chemically bound and are a part of the glass stuff . The dissolution of the trash over time ( which happens very slowly ) depends of surface area , so some minor cracking has a very small effect on strip into the environment . "
later on this year , researchers design a second vitrification test on about 2 Imperial gallon ( 7.5 liter ) of waste from a different storage tank at Hanford . However , this waste will try unlike filtration- and ion - exchange method , the PNNL enounce .
Once this mental testing is complete , the humble - action waste matter glass container will be stored in theIntegrated Disposal Facilityat the Hanford Site .
Original article onLive Science .
