Iron Phosphate Glasses: An Alternative for Vitrifying Certain Nuclear Wastes

Day, Delbert E. ; Ray, Chandra S. ; Kim, Cheol-Woon

University of Missouri--Rolla

关键词: Radioactive Wastes;    Iron Phosphates;    Chemical Composition;    Waste Forms;    Glass;   

DOI  :  10.2172/835729
RP-ID  :  DOE/ER/45618
RP-ID  :  FG07-96ER45618
RP-ID  :  835729

美国|英语

来源: UNT Digital Library

【 摘 要 】

Vitrification of nuclear waste in a glass is currently the preferred process for waste disposal. DOE currently approves only borosilicate (BS) type glasses for such purposes. However, many nuclear wastes, presently awaiting disposal, have complex and diverse chemical compositions, and often contain components that are poorly soluble or chemically incompatible in BS glasses. Such problematic wastes can be pre-processed and/or diluted to compensate for their incompatibility with a BS glass matrix, but both of these solutions increases the wasteform volume and the overall cost for vitrification. Direct vitrification using alternative glasses that utilize the major components already present in the waste is preferable, since it avoids pre-treating or diluting the waste, and, thus, minimizes the wasteform volume and overall cost.