Removal of rare earth fission products from LiCl-KCl molten salt by sulfide precipitation

被引：4

作者：

Qu, Yaxin ^{[1
,2
]}

Cheng, Ming ^{[1
,2
]}

Luo, Yan ^{[1
]}

Niu, Yongsheng ^{[1
]}

Fu, Haiying ^{[1
,2
]}

Dou, Qiang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2022年 / 331卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Precipitation; Chloride molten salt; Rare earth; Removal; EUTECTIC WASTE SALT; OPTICAL-PROPERTIES; PURIFICATION; CHLORIDES; ENERGIES; OXIDES; FUEL;

D O I：

10.1007/s10967-022-08436-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The precipitation reaction of rare earth was investigated by potassium sulfide (K2S), or sodium sulfide hydrate (Na2S center dot xH(2)O) in LiCl-KCl melts. The characteristics of precipitates were determined and the removal ratios of rare earth were compared under different conditions. For both precipitants, the rare earth removal ratios were up to 90%. Rare earth sulfides were mainly observed in K2S precipitation reaction, while some oxysulfide species were identified for Na2S center dot xH(2)O, which showed the synergistic effect of S and O on the removal efficiency. The research results suggested that sulfide precipitation was feasible to separate rare earth products from waste salts.

引用

页码：4011 / 4019

页数：9

共 34 条

[1] GIBBS ENERGIES OF FORMATION OF RARE-EARTH OXYSULFIDES [J].

AKILA, R ;

JACOB, KT ;

SHUKLA, AK .

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1987, 18 (01) :163-168

[2] INVESTIGATION OF FISSION PRODUCT TRANSPORT INTO ZEOLITE-A FOR PYROPROCESSING WASTE MINIMIZATION [J].

Allensworth, James R. ;

Simpson, Michael F. ;

Yim, Man-Sung ;

Phongikaroon, Supathorn .

NUCLEAR TECHNOLOGY, 2013, 181 (02) :337-348

[3]

Barin I, 1997, Thermochemical data of pure substances M

[4] The LiCl-KCl binary system [J].

Basin, A. S. ;

Kaplun, A. B. ;

Meshalkin, A. B. ;

Uvarov, N. F. .

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY, 2008, 53 (09) :1509-1511

[5] Characteristics of oxidation reaction of rare-earth chlorides for precipitation in LiCl-KCl molten salt by oxygen sparging [J].

Cho, Yong-Jun ;

Yang, Hee-Chul ;

Eun, Hee-Chul ;

Kim, Eung-Ho ;

Kim, In-Tae .

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 2006, 43 (10) :1280-1286

[6] Purification of used eutectic (LiCl-KCl) salt electrolyte from pyroprocessing [J].

Cho, Yung-Zun ;

Lee, Tae-Kyo ;

Eun, Hee-Chul ;

Choi, Jung-Hoon ;

Kim, In-Tae ;

Park, Geun-Il .

JOURNAL OF NUCLEAR MATERIALS, 2013, 437 (1-3) :47-54

[7] Highly enhanced reduction of rare earth oxides in simulated oxide fuel in Li2O-LiCl salt using lithium metal [J].

Choi, Eun-Young ;

Lee, Jeong .

JOURNAL OF NUCLEAR MATERIALS, 2018, 511 :367-374

[8] NEW ROUTES TO ALKALI-METAL-RARE-EARTH-METAL SULFIDES [J].

COTTER, JP ;

FITZMAURICE, JC ;

PARKIN, IP .

JOURNAL OF MATERIALS CHEMISTRY, 1994, 4 (10) :1603-1609

[9]

[邓瑞平 Deng Ruiping], 2012, [中国科学. 化学, Scientia Sinica Chimica], V42, P1337

[10] DETERMINATION OF THE STANDARD FREE-ENERGIES OF FORMATION OF CE2O2S AND Y2O2S AT HIGH-TEMPERATURES [J].

DWIVEDI, RK ;

KAY, DAR .

JOURNAL OF THE LESS-COMMON METALS, 1984, 102 (01) :1-7

← 1 2 3 4 →