Abstract
The removal of strontium from HLW (high-level radioactive waste) with the extraction by dicyclohexano-18-crown-6 (DC18C6) in 1-octanol has been investigated. The distribution coefficients of Sr{sup 2+} and the ions of Na{sup +}, K{sup +}, Cs{sup +}, Ni{sup 2+}, Fe{sup 3+}, Al{sup 3+}, Cr{sup 3+} and Mo{sup 6+} in DC18C6-1-octanol-HNO{sub 3} were determined. Results showed that DC18C6 has a high selectivity of extraction for Sr. The most cation ions in the waste solution are not extractable, except for K{sup +} and Mo{sup 6+}. The Al{sup 3+} and Fe{sup 3+} have a strong salt-out effect on the extraction of Sr{sup 2+}. Na{sup +} has the same effect as Al{sup 3+} and Fe{sup 3+} at low acidity, but has some competitive effect on the extraction of Sr at high acidity. A new process for the removal of Sr from acidic HLW has been built and batch counter current experiment with synthetic HLW solution was carried out. Through the process with three extraction stages, one scrub stage and four strip stages, 99% of Sr was removed from the feed and the amount of Sr was enriched from 0.6% in the feed to 76% product. This process is simple and high selectivity. It can be
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Longhai, He;
Ximei, Wong;
Dazhu, Yang;
Rongzhou, Jiao;
Chongli, Song
[1]
- Qinghua Univ., Beijing, BJ (China). Inst. of Nuclear Energy Technology
Citation Formats
Longhai, He, Ximei, Wong, Dazhu, Yang, Rongzhou, Jiao, and Chongli, Song.
Removal of strontium from high-level radioactive waste with crown-ether extraction.
China: N. p.,
1993.
Web.
Longhai, He, Ximei, Wong, Dazhu, Yang, Rongzhou, Jiao, & Chongli, Song.
Removal of strontium from high-level radioactive waste with crown-ether extraction.
China.
Longhai, He, Ximei, Wong, Dazhu, Yang, Rongzhou, Jiao, and Chongli, Song.
1993.
"Removal of strontium from high-level radioactive waste with crown-ether extraction."
China.
@misc{etde_10157250,
title = {Removal of strontium from high-level radioactive waste with crown-ether extraction}
author = {Longhai, He, Ximei, Wong, Dazhu, Yang, Rongzhou, Jiao, and Chongli, Song}
abstractNote = {The removal of strontium from HLW (high-level radioactive waste) with the extraction by dicyclohexano-18-crown-6 (DC18C6) in 1-octanol has been investigated. The distribution coefficients of Sr{sup 2+} and the ions of Na{sup +}, K{sup +}, Cs{sup +}, Ni{sup 2+}, Fe{sup 3+}, Al{sup 3+}, Cr{sup 3+} and Mo{sup 6+} in DC18C6-1-octanol-HNO{sub 3} were determined. Results showed that DC18C6 has a high selectivity of extraction for Sr. The most cation ions in the waste solution are not extractable, except for K{sup +} and Mo{sup 6+}. The Al{sup 3+} and Fe{sup 3+} have a strong salt-out effect on the extraction of Sr{sup 2+}. Na{sup +} has the same effect as Al{sup 3+} and Fe{sup 3+} at low acidity, but has some competitive effect on the extraction of Sr at high acidity. A new process for the removal of Sr from acidic HLW has been built and batch counter current experiment with synthetic HLW solution was carried out. Through the process with three extraction stages, one scrub stage and four strip stages, 99% of Sr was removed from the feed and the amount of Sr was enriched from 0.6% in the feed to 76% product. This process is simple and high selectivity. It can be used for removal or recovery of Sr from HLW.}
place = {China}
year = {1993}
month = {Jul}
}
title = {Removal of strontium from high-level radioactive waste with crown-ether extraction}
author = {Longhai, He, Ximei, Wong, Dazhu, Yang, Rongzhou, Jiao, and Chongli, Song}
abstractNote = {The removal of strontium from HLW (high-level radioactive waste) with the extraction by dicyclohexano-18-crown-6 (DC18C6) in 1-octanol has been investigated. The distribution coefficients of Sr{sup 2+} and the ions of Na{sup +}, K{sup +}, Cs{sup +}, Ni{sup 2+}, Fe{sup 3+}, Al{sup 3+}, Cr{sup 3+} and Mo{sup 6+} in DC18C6-1-octanol-HNO{sub 3} were determined. Results showed that DC18C6 has a high selectivity of extraction for Sr. The most cation ions in the waste solution are not extractable, except for K{sup +} and Mo{sup 6+}. The Al{sup 3+} and Fe{sup 3+} have a strong salt-out effect on the extraction of Sr{sup 2+}. Na{sup +} has the same effect as Al{sup 3+} and Fe{sup 3+} at low acidity, but has some competitive effect on the extraction of Sr at high acidity. A new process for the removal of Sr from acidic HLW has been built and batch counter current experiment with synthetic HLW solution was carried out. Through the process with three extraction stages, one scrub stage and four strip stages, 99% of Sr was removed from the feed and the amount of Sr was enriched from 0.6% in the feed to 76% product. This process is simple and high selectivity. It can be used for removal or recovery of Sr from HLW.}
place = {China}
year = {1993}
month = {Jul}
}