Integrated treatment of tailing material for the selective recovery of uranium, rare earth elements and heavy metals

Hamza, Mohammed F.; El-Aassy, Ibrahim E.; Guibal, Eric

doi:10.1016/j.mineng.2019.01.008

Cited by 37 publications

(17 citation statements)

References 61 publications

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“…Major oxide and trace elements were analyzed by conventional methods (including fusion, mineralization and metal analysis by atomic absorption spectrometry [6]). A wide range of valuable metals are present in the polymetallic ore, including Cu (2.4% w/w), REEs (0.22%), U (0.62%), V (0.13%), Ni (0.25%), and Co (0.11%) in addition to a remarkable amount of Zr (0.025%) (from [89]).…”

Section: Processing Of Uranium-bearing Ore and Uranium Recoverymentioning

confidence: 99%

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Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

Hamza

Mubark

Wei

et al. 2020

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The necessity to recover uranium from dilute solutions (for environmental/safety and resource management) is driving research towards developing new sorbents. This study focuses on the enhancement of U(VI) sorption properties of composite algal/Polyethylenimine beads through the quaternization of the support (by reaction with glycidyltrimethylammonium chloride). The sorbent is fully characterized by FTIR, XPS for confirming the contribution of protonated amine and quaternary ammonium groups on U(VI) binding (with possible contribution of hydroxyl and carboxyl groups, depending on the pH). The sorption properties are investigated in batch with reference to pH effect (optimum value: pH 4), uptake kinetics (equilibrium: 40 min) and sorption isotherms (maximum sorption capacity: 0.86 mmol U g−1). Metal desorption (with 0.5 M NaCl/0.5 M HCl) is highly efficient and the sorbent can be reused for five cycles with limited decrease in performance. The sorbent is successfully applied to the selective recovery of U(VI) from acidic leachate of uranium ore, after pre-treatment (cementation of copper, precipitation of rare earth elements with oxalate, and precipitation of iron). A pure yellow cake is obtained after precipitation of the eluate.

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Section: Processing Of Uranium-bearing Ore and Uranium Recoverymentioning

confidence: 99%

“…The treatment of acidic leachates may involve a wide range of techniques including selective precipitations [6], solvent extraction [7][8][9], and impregnated resins [10][11][12]. However, sorption processes have retained more attention for the treatment of low-concentration effluents.…”

Section: Introductionmentioning

confidence: 99%

Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

Hamza

Mubark

Wei

et al. 2020

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“…It is known a number of studies devoted to the behavior of rare earth elements in phosphorite ores [1,2] and natural water [3][4][5]. It was investigated the possibility of rare earth elements composition obtaining from deposits in the Southwestern Sinai, the characterization of the residue shows the presence of uranium, rare-earth elements (REE), aluminum, and zinc that can be valorized [6].…”

Section: Introductionmentioning

confidence: 99%

Bioleaching of Metals from Wastes of Phosphoric Fertilizers Production

Issayeva¹,

Pankiewicz²,

Otarbekova³

2020

Pol. J. Environ. Stud.

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Phosphorus-containing wastes formed after the production of phosphorus fertilizers in Shymkent, due to intensive urbanization were within the city limits and for reason of processes of water-wind erosion began to pose a serious threat to the environment and the population of the city. It was found that the formation of the fractional composition of wastes was influenced by the conditions of processing of raw materials, weather and climatic parameters and time characteristics of storage. The greater part of the waste are silicate and calcium-containing compounds. One of the options for waste disposal is considered the possibility of bio-leaching of valuable components from it. The choice of phase 1 nitrifies and micromycetes is justified by neutral or slightly acidic pH values of their cultivation, which will allow to abandon the use of acidophilic bacteria or sulfuric acid leaching. A variant using a strain of acidophilic bacteria Alicyclobacillus tolerans ST confirmed the effectiveness of their use in the bioleaching of magnesium, aluminum, potassium, calcium, phosphorus, REE such as lanthanum, cerium and neodymium. The use of micromycete Aspergillus niger AsIA proves its effectiveness in the extraction of zirconium and silver. The use of nitrifying bacteria Methyloversatilis thermotolerans MSO increases the extraction of barium and iron.

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“…The rare earth (RE) can be extracted from the ore containing rare earths, such as phosphogypsum, mine tailings, etc. (Habashi, 1985;Chi and Tian, 2008;Hammas et al, 2016;He et al, 2016a;Hamza et al, 2019). According to the previous researches (Jarosiniski et al, 1993;Hammas et al, 2016;Xiao et al, 2016;Feng et al, 2018), RE in the ore can be leached into the solution through leaching method.…”

Section: Introductionmentioning

confidence: 99%

“…According to the previous researches (Jarosiniski et al, 1993;Hammas et al, 2016;Xiao et al, 2016;Feng et al, 2018), RE in the ore can be leached into the solution through leaching method. Subsequently, the leached RE can be recovered by precipitation method by ammonium bicarbonate or oxalic acid (Tian et al, 2011;Tian et al, 2013a;Hamza et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of polyacrylamide on the process of removing impurities in the rare earth leachate

Wu¹,

Zhou²,

Liu³

et al. 2020

Physicochem. Probl. Miner. Process.

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The removal of impurities of the rare earth (RE) leachate from the RE-containing ore is usually accompanied by the formation of flocs, and a certain amount of polyacrylamide (PAM) flocculant needs to be added in this process. However, few studies have investigated the effect of the flocculant on the impurity removal process of the RE leachate. Therefore, this study aimed to investigate the flocculation process for removing impurities from the RE leachate in the absence and presence of PAM. The results showed that the addition of PAM showed little effect on the removal efficiencies of impurities, but it could increase the recovery of RE. And cationic PAM was more suitable for this impurity removal process than anionic PAM. When ammonium bicarbonate was firstly adopted to regulate the solution pH to 5.0, and then sodium sulfide was used to adjust the pH to 5.2, and 2 mg/L of cationic PAM was added to the solution, 96% Al 3+ and 98% Zn 2+ were removed from the solution, while 96% RE was maintained. Also, cationic PAM could accelerate the settlement of flocs, the settling time of the flocs shortened from 60 min to 20 min. This work may provide a promising way to shorten the production cycle and increase the recovery of RE.

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Integrated treatment of tailing material for the selective recovery of uranium, rare earth elements and heavy metals

Cited by 37 publications

References 61 publications

Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

Bioleaching of Metals from Wastes of Phosphoric Fertilizers Production

Effect of polyacrylamide on the process of removing impurities in the rare earth leachate

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