A study on photochemical separation of rare earths: The separation of europium from an industrial concentrate material of samarium, europium, and gadolinium

Journal Article · Fri Feb 01 00:00:00 EST 1991 · Separation Science and Technology; (United States)

OSTI ID:6020894

Qiu, Lufu ^[1]; Kang, Xihui; Wang, Tongsheng ^[2]

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1. Tianjin Inst. of Tech. (China)
2. Tianjin Univ. (China)

Eu can be separated by photoreduction from the Sm, Eu, and Gd concentrate in a mixed alcohol (ethanol and isopropanol) system by using a high-pressure mercury lamp as the light source. The influencing factors, such as the concentration of EtOH-isopropanol, irradiation time, and the lamp power, on the photoreduction were investigated in detail in this research, and the optimum technological conditions were determined. The separation coefficients were {beta}{sub Gd/Eu} > {beta}{sub Sm/Eu} = 960, and the yield of Eu(II) is 95%. The purity of Eu obtained is 92%.

• OSTI ID: 6020894
• Journal Information: Separation Science and Technology; (United States), Vol. 26:2; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
EUROPIUM
MATERIALS RECOVERY
PHOTOLYSIS
CHEMICAL REACTION KINETICS
ETHANOL
EXPERIMENTAL DATA
GADOLINIUM
GAS CHROMATOGRAPHY
IRRADIATION
MIXTURES
OPTIMIZATION
PROPANOLS
PURIFICATION
REDUCTION
SAMARIUM
SEPARATION PROCESSES
SOLUBILITY
VISIBLE RADIATION
X-RAY FLUORESCENCE ANALYSIS
ALCOHOLS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
HYDROXY COMPOUNDS
INFORMATION
KINETICS
MANAGEMENT
METALS
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PROCESSING
RADIATIONS
RARE EARTHS
REACTION KINETICS
RECOVERY
WASTE MANAGEMENT
WASTE PROCESSING
X-RAY EMISSION ANALYSIS
400105* - Separation Procedures
400500 - Photochemistry