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Accession number;99A1007989
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| Title;Solidification of Hazardous Heavy Metals with Soda-Lime Glass. |
| Author;
NISHIDA TETSUAKI
(Kyushu Univ., Faculty of Science)
SETO MOTOSHI
(Kyushu Univ., Faculty of Science)
KUBUKI SHIRO
(Ube Tech. Coll.)
MIYAJI OSAMU
(Kyushu Univ.)
ARIGA TOSHIFUMI
(Kyushu Univ.)
MATSUMOTO YASUKUNI
(Fukuoka Univ., Fac. of Eng.)
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Journal Title;Abstracts of Papers. Symposium on Radiochemistry
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Journal Code:F0139B
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ISSN:1345-2762
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VOL.43rd;NO.;PAGE.74(1999)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Hazardous heavy metal (HHM) ions are regularly discharged from chemical laboratories. The XRD and 57Fe Moessbauer study indicated that the sludge of the hydroxides of HHM ions are formed with a small amount of .GAMMA.-FeOOH particles. Heavy metal waste glass could be prepared by melting the sludge together with the soda-lime silicate glass. 57Fe Moessbauer study indicated that iron and HHM ions occupy the sites of network former (NWF) in the soda-lime silicate glass. NWF sites will be effective for the solidification of the HHM in the waste glass, since the metal ions at the NWF sites in general are rigidly bonded to the oxygen bonds by the covalent bonds. Leaching test was performed with the acid rain simulant (pH3.5). The leaching test proved the higher chemical durability of the waste glass. These results indicate that soda-lime silicate glass is a very effective medium for the stable solidification of the heavy metal ions and the glass wastes can be reused for this purpose. (author abst.) |
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