一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

ChemicalBook >> journal list >> Separation and Purification Technology >>article
Separation and Purification Technology

Separation and Purification Technology

IF: 8.09
Download PDF

Selective dissolution and separation of lanthanides and actinides from spent nuclear fuel using inorganic salt solutions: A sustainable approach

Published:11 December 2024 DOI: 10.1016/j.seppur.2024.131035
Xilin Gao, Anting Ding, Yuxin Li, Chuanying Liu, Chengliang Xiao

Abstract

Efficient utilization of uranium resources and minimization of nuclear waste are critical challenges for the sustainable development of nuclear energy. The separation of actinides (An) from lanthanides (Ln) is essential to reduce the impact of neutron poisons and enhance the efficiency of Partitioning & Transmutation (P&T) processes. In this study, we propose the use of a concentrated AlCl3 solution as a selective leaching agent to separate Ln from An in spent nuclear fuel (SNF). At a mass ratio of 1:15, the AlCl3 solution effectively dissolves nearly 100?% of lanthanide oxides from simulated SNF at 75?°C, while the coexisting actinide oxides remain largely insoluble. The high separation factors between Ln2O3 and AnO2 (average of 1630 for Ln/U and 490 for Ln/Th) provide a novel and efficient approach for the selective separation of lanthanides from SNF. The lanthanides are subsequently recovered through oxalic acid precipitation and calcination to produce Ln2O3. Based on our characterization results, the primary driving force for the dissolution of Ln2O3 is the acidity of the H2O-AlCl3 system, with the lattice energies of oxides identified as the key factor affecting the differential dissolution of Ln(III) and U/Th with higher valent under identical conditions. This selective dissolution and separation process using AlCl3 solution presents a highly efficient method for the removal of lanthanides from SNF and improves the utilization of nuclear fission products. With its mild operating conditions and reduced environmental impact, this method offers a promising approach for the recovery of rare earth elements from nuclear waste and other secondary resources.

Substances (2)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Oxalic acid 144-62-7 C2H2O4 942 suppliers $5.00-$2400.00
Aluminium chloride hexahydrate 7784-13-6 AlCl3H2O 406 suppliers $20.00-$2454.22

Similar articles

IF:5.3

Selective flotation separation of scheelite from calcite using hexamethylenediamine tetramethylene phosphonic acid as a novel depressant

Journal of Molecular Liquids Tao Peng , Liming Tao ,etc Published: 24 March 2024
IF:14.7

Sustainable production of dopamine hydrochloride from softwood lignin.

Nature Communications Lin Dong,?Yanqin Wang,etc Published: 17 August 2023
梧州市| 福泉市| 申扎县| 新丰县| 老河口市| 德阳市| 大英县| 屏南县| 白城市| 河东区| 铜川市| 四会市| 称多县| 鱼台县| 崇礼县| 湖州市| 河南省| 成都市| 江达县| 庆阳市| 阿巴嘎旗| 察隅县| 安西县| 兴海县| 玉龙| 民和| 丁青县| 莫力| 临洮县| 武宣县| 万载县| 固镇县| 孝义市| 班戈县| 余江县| 嘉兴市| 酉阳| 潮州市| 芮城县| 六枝特区| 临武县|