Abstract
To separate MA (Am, Cm) and some fission product elements (FPs) such as Tc, Pd, Cs and Sr from high level liquid waste (HLLW) systematically, we have been studying an advanced aqueous partitioning process, which uses selective adsorption as the separation method. For this process, we prepared several novel adsorbents which were immobilized in a porous silica/ polymer composite support (SiO 2-P). Adsorption and separation behavior of various elements was studied experimentally in detail. Small scale separation tests using simulated HLLW solutions were carried out. Pd(II) was strongly adsorbed by the AR-01 anion exchanger and effectively eluted off by using thiourea. Successful separation of Pd(II) from simulated HLLW was achieved. Tc(VII) also exhibited strong adsorption on AR-01 and could be eluted off by using U(IV) as a reductive eluent. Am(III) presented significantly high adsorbability and selectivity onto R-BTP/SiO 2-P adsorbents over various FPs including Ln(III). The R-BTP adsorbents were fairly stable in 3 M HNO 3, but instable against γ-irradiation-3M HNO 3. An advanced partitioning process consisting of three separation columns for the target elements separation from HLLW was proposed and the obtained experiment results indicated that the proposed process is essentially feasible.
| Original language | English |
|---|---|
| Pages (from-to) | 1726-1731 |
| Number of pages | 6 |
| Journal | Science China Chemistry |
| Volume | 55 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2012 Sep |
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Keywords
- Extraction chromatography
- Fission products
- HLLW
- Ion exchange
- Minor actinides
- Novel adsorbents
- Separation
- Valuable elements utilization
- Waste minimization
ASJC Scopus subject areas
- Chemistry(all)
Cite this
An advanced partitioning process for key elements separation from high level liquid waste. / Wei, Yuezhou; Wang, Xinpeng; Liu, Ruiqin; Wu, Yan; Usuda, Shigekazu; Arai, Tsuyoshi.
In: Science China Chemistry, Vol. 55, No. 9, 09.2012, p. 1726-1731.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - An advanced partitioning process for key elements separation from high level liquid waste
AU - Wei, Yuezhou
AU - Wang, Xinpeng
AU - Liu, Ruiqin
AU - Wu, Yan
AU - Usuda, Shigekazu
AU - Arai, Tsuyoshi
PY - 2012/9
Y1 - 2012/9
N2 - To separate MA (Am, Cm) and some fission product elements (FPs) such as Tc, Pd, Cs and Sr from high level liquid waste (HLLW) systematically, we have been studying an advanced aqueous partitioning process, which uses selective adsorption as the separation method. For this process, we prepared several novel adsorbents which were immobilized in a porous silica/ polymer composite support (SiO 2-P). Adsorption and separation behavior of various elements was studied experimentally in detail. Small scale separation tests using simulated HLLW solutions were carried out. Pd(II) was strongly adsorbed by the AR-01 anion exchanger and effectively eluted off by using thiourea. Successful separation of Pd(II) from simulated HLLW was achieved. Tc(VII) also exhibited strong adsorption on AR-01 and could be eluted off by using U(IV) as a reductive eluent. Am(III) presented significantly high adsorbability and selectivity onto R-BTP/SiO 2-P adsorbents over various FPs including Ln(III). The R-BTP adsorbents were fairly stable in 3 M HNO 3, but instable against γ-irradiation-3M HNO 3. An advanced partitioning process consisting of three separation columns for the target elements separation from HLLW was proposed and the obtained experiment results indicated that the proposed process is essentially feasible.
AB - To separate MA (Am, Cm) and some fission product elements (FPs) such as Tc, Pd, Cs and Sr from high level liquid waste (HLLW) systematically, we have been studying an advanced aqueous partitioning process, which uses selective adsorption as the separation method. For this process, we prepared several novel adsorbents which were immobilized in a porous silica/ polymer composite support (SiO 2-P). Adsorption and separation behavior of various elements was studied experimentally in detail. Small scale separation tests using simulated HLLW solutions were carried out. Pd(II) was strongly adsorbed by the AR-01 anion exchanger and effectively eluted off by using thiourea. Successful separation of Pd(II) from simulated HLLW was achieved. Tc(VII) also exhibited strong adsorption on AR-01 and could be eluted off by using U(IV) as a reductive eluent. Am(III) presented significantly high adsorbability and selectivity onto R-BTP/SiO 2-P adsorbents over various FPs including Ln(III). The R-BTP adsorbents were fairly stable in 3 M HNO 3, but instable against γ-irradiation-3M HNO 3. An advanced partitioning process consisting of three separation columns for the target elements separation from HLLW was proposed and the obtained experiment results indicated that the proposed process is essentially feasible.
KW - Extraction chromatography
KW - Fission products
KW - HLLW
KW - Ion exchange
KW - Minor actinides
KW - Novel adsorbents
KW - Separation
KW - Valuable elements utilization
KW - Waste minimization
UR - http://www.scopus.com/inward/record.url?scp=84866125337&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866125337&partnerID=8YFLogxK
U2 - 10.1007/s11426-012-4697-4
DO - 10.1007/s11426-012-4697-4
M3 - Article
AN - SCOPUS:84866125337
VL - 55
SP - 1726
EP - 1731
JO - Science China Chemistry
JF - Science China Chemistry
SN - 1674-7291
IS - 9
ER -