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Inclusion, occlusion and adsorption of rare earth elements from chloride media onto barite-gypsum composite
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Inclusion, occlusion and adsorption of rare earth elements from chloride media onto barite-gypsum composite
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Journal Article
Inclusion, occlusion and adsorption of rare earth elements from chloride media onto barite-gypsum composite
2023
Overview
In this study, a synthetic BaSO
4
·CaSO
4
composite was prepared by co-precipitation technique, characterised and examined for REE sorption. The sorption parameters were; pH = 4, equilibrium time = 20 min, temperature = 303 K, and REE liquor volume to composite mass ratio of 0.2:1 L g
−1
. The sorption reaction was controlled by pseudo 2nd order kinetic mechanism and Langmuir adsorption isotherm with an adsorption capacity of 168.63 mg g
−1
. 90.14% of REE (III) was desorbed using 1 mol L
−1
HNO
3.
The process was endothermic and spontaneous. Accordingly, 1:1 barite-gypsum (natural ingredient for BaSO
4
·CaSO
4
), with 136 mg g
−1
loading capacity, was used for REEs extraction.
Publisher
Springer International Publishing,Springer,Springer Nature B.V
Subject
