SREX - A NEW PROCESS FOR THE EXTRACTION AND RECOVERY OF STRONTIUM FROM ACIDIC NUCLEAR WASTE STREAMS

被引:249
作者
HORWITZ, EP
DIETZ, ML
FISHER, DE
机构
[1] Chemistry Division, Argonne National Laboratory, IL, 60439
关键词
D O I
10.1080/07366299108918039
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A new process for the extraction and recovery of strontium from acidic waste streams is described. In this process, called SREX (for Strontium Extraction), strontium is extracted from acidic (greater-than-or-equal-to 1 M HNO3) solution using a 0.20 M solution of di-t-butylcyclohexano-18-crown-6 in 1-octanol. Extracted strontium is readily stripped from the organic phase using either water or dilute (< 0.05 M) HNO3. Tests of the process on a synthetic dissolved sludge waste solution show that only strontium, barium, and technetium are appreciably extracted by the crown ether. Prolonged exposure of the process solvent to nitric acid at elevated temperatures or to less-than-or-equal-to 50 Wh/L gamma radiation from a Co-60 source produces essentially no deterioration in its performance. Benchtop batch countercurrent extraction experiments show that 99.7% of the strontium initially present in a feed solution can be removed in only three extraction stages.
引用
收藏
页码:1 / 25
页数:25
相关论文
共 29 条
[1]   SEPARATION OF STRONTIUM FROM NUCLEAR WASTE SOLUTIONS BY SOLVENT-EXTRACTION WITH CROWN ETHERS [J].
BLASIUS, E ;
KLEIN, W ;
SCHON, U .
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 1985, 89 (02) :389-398
[2]  
Filippov E. A., 1982, RADIOKHIMIYA, V24, P214
[3]  
GALKIN BY, 1988, JUL INT SOLV EXTR C
[4]  
HIRAOKA M, 1982, CROWN COMPOUNDS
[5]   SOLVENT EXTRACTION CHEMISTRY SYMPOSIUM .2. FISSION PRODUCT RECOVERY FROM WASTE SOLUTIONS BY SOLVENT EXTRACTION [J].
HORNER, DE ;
CROUSE, DJ ;
BROWN, KB ;
WEAVER, B .
NUCLEAR SCIENCE AND ENGINEERING, 1963, 17 (02) :234-&
[6]   CORRELATION OF THE EXTRACTION OF STRONTIUM NITRATE BY A CROWN ETHER WITH THE WATER-CONTENT OF THE ORGANIC-PHASE [J].
HORWITZ, EP ;
DIETZ, ML ;
FISHER, DE .
SOLVENT EXTRACTION AND ION EXCHANGE, 1990, 8 (01) :199-208
[7]   THE EXTRACTION OF TH(IV) AND U(VI) BY DIHEXYL-N,N-DIETHYLCARBAMOYLMETHYLPHOSPHONATE FROM AQUEOUS NITRATE MEDIA [J].
HORWITZ, EP ;
KALINA, DG ;
MUSCATELLO, AC .
SEPARATION SCIENCE AND TECHNOLOGY, 1981, 16 (04) :403-416
[8]  
HORWITZ EP, IN PRESS SOLVENT EXT
[9]  
HORWITZ EP, 1989, UNPUB
[10]   INDUCTIVELY COUPLED PLASMA-ATOMIC EMISSION-SPECTROMETRY (ICP-AES) IN SUPPORT OF NUCLEAR WASTE MANAGEMENT [J].
HUFF, EA ;
HORWITZ, EP .
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1985, 40 :279-286