Inclusion, occlusion and adsorption of rare earth elements from chloride media onto barite-gypsum composite

被引：7
|
作者：
Abdo, Sh. M. [1 ]
Hagag, M. S. [1 ]
Ali, A. H. [1 ]
Salem, F. H. [1 ]
Dakroury, G. A. [2 ]
机构：
[1] Nucl Mat Author, PO 530 Maadi, Cairo, Egypt
[2] Egyptian Atom Energy Author, Hot Labs Ctr, Nucl Chem Dept, PO 13759, Cairo, Egypt
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2023年 / 332卷 / 01期
关键词：
Gypsum; Barite; Rare earth elements; Sorption; NANOPARTICLES; RECOVERY; REMOVAL; CASO4-CENTER-DOT-2H(2)O; KINETICS; BEHAVIOR; ACID; REES;
D O I：
10.1007/s10967-022-08669-4
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this study, a synthetic BaSO4 & BULL;CaSO4 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 HNO3. The process was endothermic and spontaneous. Accordingly, 1:1 barite-gypsum (natural ingredient for BaSO4 & BULL;CaSO4), with 136 mg g(-1) loading capacity, was used for REEs extraction.
引用
收藏
页码：63 / 76
页数：14
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