Selective extraction and recovery of tin from hazardous zinc-leaching residue by oxalic acid/sulfuric acid mixture leaching and hydrolytic precipitation

Wang, Yizhuang; Liu, Bingbing; Sun, Hu; Huang, Yanfang; Han, Gaorong

doi:10.1016/j.jclepro.2022.130955

Cited by 15 publications

(5 citation statements)

References 53 publications

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“…In the case of oxalic acid, after a 1/20 g/mL ratio, there was no significant difference in tin extraction as depicted in figure 7d; Wang et al. conducted selective extraction of tin from zinc leaching residue using oxalic acid‐sulfuric acid mixture and concluded that a lower S/L ratio is beneficial for efficient mass diffusion from solid to liquid [51] …”

Section: Resultsmentioning

confidence: 99%

“…Wang et al. discussed the reduction of Sn (IV) to Sn (II) by E−ph diagram [51] . Sn 4+ has a stable region in the highly acidic environment; however, the required pH range for the stable region of Sn 2+ is below pH 3.…”

Section: Resultsmentioning

confidence: 99%

“…Wang et al discussed the reduction of Sn (IV) to Sn (II) by EÀ ph diagram. [51] Sn 4 + has a stable region in the highly acidic environment; however, the required pH range for the stable region of Sn 2 + is below pH 3. Compared to sulphuric acid and hydrogen peroxide, E (CO 2 /H 2 C 2 O 4 ) reduction potential is À 0.59 V, while E(Sn 4 + /Sn 2 + ) is 0.15; hence thermodynamically oxalic acid can reduce Sn (IV) to Sn (II), thereby has higher extraction.…”

Section: Mechanism Of Metal Leachingmentioning

confidence: 98%

“…In the case of oxalic acid, after a 1/20 g/mL ratio, there was no significant difference in tin extraction as depicted in figure 7d; Wang et al conducted selective extraction of tin from zinc leaching residue using oxalic acid-sulfuric acid mixture and concluded that a lower S/L ratio is beneficial for efficient mass diffusion from solid to liquid. [51] A high S/L ratio is required to increase process yield; however, it reduces metal extraction efficiency. Hence, there should be a trade-off between metal extraction efficiency and process yield.…”

Section: Effect Of S/l Ratio and Stirring Speedmentioning

confidence: 99%

See 3 more Smart Citations

Green Deep Eutectic Solvents (DESs) for Sustainable Metal Recovery from Thermally Treated PCBs: A Greener Alternative to Conventional Methods

Mishra,

Hunter,

Pant

et al. 2024

ChemSusChem

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Waste PCBs—the core of e‐waste—are rich in copper, tin, zinc, iron, and nickel. Leaching base metals from PCB used to be done in toxic, corrosive acidic/alkali mediums. In this work, an environmentally friendly method for leaching metals from thermally treated PCBs (TPCBs) of mobile phones were proposed using choline chloride based deep eutectic solvents (DESs). DES selectivity and solubility of metals from metal oxides were the main screening criteria. FA‐ChCl had the maximum solubility of Cu, Fe, and Ni, while Urea‐ChCl had high Zn selectivity and solubility. Oxalic acid has high selectivity for Sn. FA‐ChCl extracted Cu and Fe best at 16 h, 100 °C, and 1/30 g/mL. Urea‐ChCl extracted Zn (90.4 ± 2.9%) from TPCBs at 100 °C, 21 h, 1/20 g/mL, and 400 rpm. Oxalic acid (1M) removed 92.3 ± 2.1% Sn from TPCBs in 1 h at 80 °C and 1/20 g/mL. The shrinking core model‐based kinetic investigation of FA‐ChCl for Cu extraction showed a diffusion‐controlled process. The proposed method is greener than mineral acids utilised for metal extraction.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Mechanism Of Metal Leachingmentioning

confidence: 98%

Section: Effect Of S/l Ratio and Stirring Speedmentioning

confidence: 99%

See 2 more Smart Citations

Green Deep Eutectic Solvents (DESs) for Sustainable Metal Recovery from Thermally Treated PCBs: A Greener Alternative to Conventional Methods

Mishra,

Hunter,

Pant

et al. 2024

ChemSusChem

View full text Add to dashboard Cite

show abstract

“…At the same time, it has a strong reducing property, so it can reduce high-valence metal ions to low-valence states and improve the leaching rate of metals [30]. Based on the synergistic effect of the reducing ability of oxalic acid and the acidic strength of sulfuric acid [31], the researchers used the compound leaching agents of sulfuric acid and oxalic acid to recover tin from hazardous zinc-leaching residue and indium from indium-bearing zinc ferrite, which achieved a good effect [31,32]. By reviewing the relevant literature, there is no relevant report on the recovery of spent NCM ternary lithium-ion battery cathode materials.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Valuable Metals from Spent LiNi0.8Co0.1Mn0.1O2 Cathode Materials Using Compound Leaching Agents of Sulfuric Acid and Oxalic Acid

et al. 2022

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The recovery of valuable metals from spent lithium-ion batteries is beneficial to protect the environment and avoid resource depletion. Based on the synergistic effect of the reducing ability of oxalic acid and the acidic strength of sulfuric acid, this study was conducted to recover valuable metals from spent LiNi0.8Co0.1Mn0.1O2 lithium-ion battery cathode materials with the compound leaching agents of sulfuric acid and oxalic acid. Under the optimized conditions of sulfuric acid concentration at 2.5 mol·L−1, oxalic acid concentration at 20 g·L−1, liquid-to-solid ratio at 10 mL·g−1, reaction temperature at 85 °C, and reaction time at 100 min, the leaching rate of Li, Ni, Co, and Mn measured by ICP-OES was, respectively, 99.26%, 98.41%, 96.95%, and 97.54%. It was further validated that the valuable metals were almost completely leached when combined with the XRD and SEM-EDS analysis of spent cathode materials before and after leaching. The leaching of Li, Ni, Co, and Mn was all in accordance with the Avrami model with their activation energies of 31.96 kJ·mol−1, 41.01 kJ·mol−1, 47.57 kJ·mol−1, and 42.95 kJ·mol−1, indicating that the diffusion was the control of the Li leaching process, and the surface chemical reaction was the control of the other three metals. This work provides a new idea and method for the recycling of spent lithium-ion batteries.

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Metal recovery from industrial solid waste by ultrasonic-assisted hydrometallurgical leaching: a review

Ran,

Li,

Wang

et al. 2024

Environ Chem Lett

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Selective extraction and recovery of tin from hazardous zinc-leaching residue by oxalic acid/sulfuric acid mixture leaching and hydrolytic precipitation

Cited by 15 publications

References 53 publications

Green Deep Eutectic Solvents (DESs) for Sustainable Metal Recovery from Thermally Treated PCBs: A Greener Alternative to Conventional Methods

Green Deep Eutectic Solvents (DESs) for Sustainable Metal Recovery from Thermally Treated PCBs: A Greener Alternative to Conventional Methods

Recovery of Valuable Metals from Spent LiNi0.8Co0.1Mn0.1O2 Cathode Materials Using Compound Leaching Agents of Sulfuric Acid and Oxalic Acid

Metal recovery from industrial solid waste by ultrasonic-assisted hydrometallurgical leaching: a review

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