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지하실험 연구단
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Rapid simultaneous recovery and purification of calcium and molybdenum from calcium molybdate-based crystal waste

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Title
Rapid simultaneous recovery and purification of calcium and molybdenum from calcium molybdate-based crystal waste
Author(s)
Aryal P.; Karki S.; Choi Y.; Kim H.J.; Yeongduk Kim; Milyutin V.; Olga Gileva; Park H.K.; Keonah Shin
Publication Date
2019-11
Journal
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT, v.21, no.6, pp.1384 - 1390
Publisher
SPRINGER
Abstract
© 2019, Springer Japan KK, part of Springer Nature.Molybdenum (Mo) has wide applications like as alloying elements in steel industries and in experimental laboratories as a catalyst for organic synthesis and as scintillating crystals in high-energy physics experiments. The primary mineral resources of Mo have been ceaselessly exploited and are insufficient to meet the demand in manufacturing industries and experimental researches. Separation, purification, recovery and reuse of Mo will, therefore, be of great importance for environmental conservation and sustainable development. The objective of this study was to recover Mo and calcium (Ca) from crystal wastes. Mo and Ca were recovered from CaMoO4 scintillating crystal wastes in the forms of MoO3 and CaCO3 by adopting nitric acid and hydrochloric acid leaching schemes. About 98% recovery yield efficiency for both elements was obtained through hydrochloric acid leaching. The concentrations of impurity elements like strontium, barium, lead, thorium and uranium in the final products were also reduced by several dozen times as compared to the initial wastes. The finding of this study showed that the hydrochloric acid leaching method could be applied for a rapid and efficient recovery of Mo and Ca from CaMoO4 wastes on a large scale
URI
https://pr.ibs.re.kr/handle/8788114/6634
ISSN
1438-4957
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > Journal Papers (저널논문)
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