Aluminium hydroxide as selective sorbent of lithium salts from brines and technical solutions

Исупов, В. П.; Kotsupalo, N. P.; Nemudry, A. P.; Menzeres, L.T.

doi:10.1016/s0167-2991(99)80567-9

Cited by 42 publications

(30 citation statements)

References 12 publications

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“…The adsorption tendency of Li x‐p Al 2 ‐LDH@SiO 2 is Li + >Mg 2+ ≫Na + , K + , whereas its desorption tendency followed the sequence Li + ≫Mg 2+ >Na + , K + . This result was in accordance with previous reports of lithium separation by polycrystalline Al(OH) 3 from geothermal brine, [40–41] which showed that lithium was selectively adsorbed among Na, K, Ca, B, and Mn. In this study, we fabricated Li x‐p Al 2 ‐LDH@SiO 2 having appropriate voids capable of accommodating lithium ions, making it possible to selectively separate lithium without dissolution of Li x Al 2 ‐LDH in alkali metal salt solution with a low concentration of LiCl.…”

Section: Resultssupporting

confidence: 93%

Selective Lithium Adsorption of Silicon Oxide Coated Lithium Aluminum Layered Double Hydroxide Nanocrystals and Their Regeneration

Lee

Cha

2021

Chemistry An Asian Journal

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Silicon oxide-coated lithium aluminum layered double hydroxide (Li x Al 2 -LDH@SiO 2 ) nanocrystals (NCs) are investigated to selectively separate lithium cations in aqueous lithium resources. We directly synthesized Li x Al 2 -LDH NC arrays by oxidation of aluminum foil substrate under a urea and lithium solution. Various lithium salts, including Cl À , CO 3 2À , NO 3 À , and SO 4 2À , were applied in aqueous solution to confirm the anion effect on the captured and released lithium quantity of the Li x Al 2 -LDH NCs. In a 5% solution of sulfate ions mix with lithium chloride, the Li x Al 2 -LDH NCs separated a larger quantity of lithium than in other anion conditions. To enhance regeneration stability and lithium selectivity, thin layers of SiO 2 were coated onto the Li x Al 2 -LDH nanostructure arrays for inhibition of nanostructure destruction after desorption of lithium cations in hot water. The Li x Al 2 -LDH@SiO 2 nanostructures showed enhanced properties for lithium adsorption, including increase of stable regeneration cycles from three to five cycles, and they showed high lithium selectivity in the Mg 2 + , Na + , and K + cation mixed aqueous resource. Our nanostructured LDH lithium adsorbents would provide a facile and efficient application for cost-efficient and large-scale lithium production.

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Section: Resultssupporting

confidence: 93%

Selective Lithium Adsorption of Silicon Oxide Coated Lithium Aluminum Layered Double Hydroxide Nanocrystals and Their Regeneration

Lee

Cha

2021

Chemistry An Asian Journal

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“…Once pH 7.4 was reached, over 90% of lithium was found to reabsorb to the aluminum compounds. The loss of Li at pH 4 can be attributed to the fact that fresh amorphous aluminum hydroxide is an effective sorbent for Li + ions as the small Li + is able to intercalate into the hydroxide compound 43 , 44 . The further increase in pH can promote the thickening and crystallization of gel, which decreases its sorptive properties resulting in deintercalation and release of lithium ions from the aluminum hydroxide 43 .…”

Section: Resultsmentioning

confidence: 99%

“…The loss of Li at pH 4 can be attributed to the fact that fresh amorphous aluminum hydroxide is an effective sorbent for Li + ions as the small Li + is able to intercalate into the hydroxide compound 43 , 44 . The further increase in pH can promote the thickening and crystallization of gel, which decreases its sorptive properties resulting in deintercalation and release of lithium ions from the aluminum hydroxide 43 . In addition, the filtration of the cakes obtained at all pH values was significantly more challenging in the presence of aluminum as filter paper with the larger pore size (22 μm) was required due to the formation of aluminum hydroxide gel-like colloids 39 , 43 .…”

Section: Resultsmentioning

confidence: 99%

“…The further increase in pH can promote the thickening and crystallization of gel, which decreases its sorptive properties resulting in deintercalation and release of lithium ions from the aluminum hydroxide 43 . In addition, the filtration of the cakes obtained at all pH values was significantly more challenging in the presence of aluminum as filter paper with the larger pore size (22 μm) was required due to the formation of aluminum hydroxide gel-like colloids 39 , 43 . Conversely, for the filtration of precipitated iron only, solids passed through the initially selected filter paper, therefore paper with a reduced pore size of 2.7 μm was used and the filtration was still significantly faster than any aluminum-containing slurry.…”

Section: Resultsmentioning

confidence: 99%

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Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution

Chernyaev

Wilson

Lundström

2021

Sci Rep

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The role of aluminum concentration and pH in the purification of waste Li-ion battery leach solution was investigated using NaOH and LiOH as neutralization agents ([H2SO4] = 0.313 M, t = 6 h). Solution was prepared from synthetic chemicals to mimic real battery leach solution. Results demonstrate that pH (3.5–5.5) has a significant effect on the precipitation of metals (Fe, Al, Ni, Cu, Co, Mn, and Li), whereas higher temperature (T = 30 and 60 °C) decreases the precipitation pH of metals. Iron and aluminum were both found to precipitate at ca. pH 4 and the presence of aluminum in PLS clearly decreased the separation efficiency of Fe vs. active material metals (Ni, Co, Li). In the absence of dissolved aluminum, Fe precipitated already at pH 3.5 and did not result in the co-precipitation of other metals. Additionally, the Al-free slurry had a superior filtration performance. However, aluminum concentrations of 2 and 4 g/L were found to cause loss of Ni (2–10%), Co (1–2%) and Li (2–10%) to the Fe-Al hydroxide cake at pH 4. The use of LiOH (vs. NaOH) resulted in 50% lower co-precipitation of Ni, Co and Li. Overall, these results demonstrate that hydroxide precipitation can be an effective method to remove iron from battery waste leach solutions at aluminum concentrations of < 2 g/L only. Although the highest level of lithium loss in the cake was found at pH 4, the loss was shown to decrease with increasing pH.

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“… 59 The pH values ranging from 2.5 to 10.5 were investigated for the adsorption capacity for Li(I) since the adsorbed material would be dissolved under the pH value below 2.5, and other metal ions existing in the aqueous solution would precipitate out with OH – under the pH value above 10.5. 60 As can be seen from Figure 6 , the adsorption capacity for Li(I) reached a maximum value of 5.2 mg/g at pH 3.0. As the pH value increased to 7.5, the adsorption capacity for Li(I) decreased.…”

Section: Resultsmentioning

confidence: 75%

Adsorption of Li(I) Ions through New High-Performance Electrospun PAN/Kaolin Nanofibers: A Combined Experimental and Theoretical Calculation

2022

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Lithium (Li), as a strategic energy source in the 21st century, has a wide range of application prospects. As the demand for lithium resources grows, refining lithium resources becomes increasingly important. A novel method was proposed to directly prepare polyacrylonitrile–LiCl·2Al(OH) 3 · n H 2 O (PAN–Li/Al-LDH) composites from kaolin with simple operation and low cost, showing effective adsorption performance for the removal of Li(I) from brine in a salt lake. Moreover, several techniques have been applied for characterization, including X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and the Brunauer–Emmett–Teller method. Batch adsorption experiments were conducted to investigate the adsorption behaviors of PAN–Li/Al-LDHs for Li(I) in salt-lake brines, indicating that the adsorption equilibrium could reach within 2 h, and the adsorption kinetics for Li(I) conforms to the pseudo-second-order model. The adsorption isotherms are consistent with those obtained by the Langmuir model, with a maximum adsorption capacity of 5.2 mg/g. The competitive experimental results indicated that PAN–Li/Al-LDHs exhibited specific selectivity for Li(I) in the mixed solutions of Mg(II), Na(I), K(I), and Ca(II) with the selectivity coefficients of 9.57, 19.38, 43.40, and 33.05, respectively. Moreover, the PAN–Li/Al-LDHs could be reused 60 times with basically unchanged adsorption capacity, showing excellent stability and regeneration ability. Therefore, PAN–Li/Al-LDHs would have promising industrial application potential for the adsorption and recovery of Li(I) from salt-lake brines.

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Aluminium hydroxide as selective sorbent of lithium salts from brines and technical solutions

Cited by 42 publications

References 12 publications

Selective Lithium Adsorption of Silicon Oxide Coated Lithium Aluminum Layered Double Hydroxide Nanocrystals and Their Regeneration

Selective Lithium Adsorption of Silicon Oxide Coated Lithium Aluminum Layered Double Hydroxide Nanocrystals and Their Regeneration

Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution

Adsorption of Li(I) Ions through New High-Performance Electrospun PAN/Kaolin Nanofibers: A Combined Experimental and Theoretical Calculation

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