Separation of Silver (I) and Zinc(II) from Nitrate Solutions by Solvent Extraction with LIX63

Sun, Panpan; Min, Byoung-Jun; Kim, Sung-Tae; Cho, Sung Yong

doi:10.2320/matertrans.m2016316

Cited by 9 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ In the case of Ag(I), the applicability of calix(4)arene amide derivatives [23], ketonic derivatives of calixarenes [24], Cyanex 272, Cyanex 302, Cyanex 301 [25] [26], bis-triazin-bi-pyridine (BTBP) [27], trioctylphosphine oxide (TOPO) [28], and 5,8-diethyl-7-hydroxydodecan-6-oxime (LIX63) [29,30] for the extraction of Ag(I) has been investigated. From a chloride-leaching solution of anode slimes containing Cu(II), Ag(I), and Au(II), Cu(II) was recovered by extraction with LIX63, followed by stripping with HCl, whereas Ag(I) was recovered via extraction with Alamine 336, followed by stripping with an NH 4 SCN solution [31].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Copper(II) and Silver(I) from Nitrate Leaching Solution of Industrial Dust via Solvent Extraction with LIX63

Sun

Kim

Seo

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

A nitrate leachate containing Cu(II), Ag(I), Ni(II), Mg(II), and Al(III) was obtained during the leaching of industrial dust, which arises during the pyrometallurgy of spent camera modules. To separate and recover Cu(II) and Ag(I) from the leaching solution, solvent extraction experiments using 5,8-diethyl-7-hydroxydodecan-6-oxime (LIX63) were conducted. LIX63 was found to selectively extract Cu(II) and Ag(I) over other metal ions (Ni(II), Mg(II), and Al(III)) at low nitric acid concentrations. The extraction efficiency of Cu(II) was more affected than that of Ag(I) by the acidity of the feed solution and the LIX63 concentration in the organic phase. Cu(II) and Ag(I) were simultaneously extracted using 2 mol/L LIX63. Cu(II) was separated from the loaded LIX63 via stripping with 4 mol/L HNO3, whereas Ag(I) was recovered via stripping with 0.1 mol/L thiourea after the removal of Cu(II). McCabe–Thiele diagrams for the extraction and stripping of Cu(II) and Ag(I) were constructed. The complete extraction of Cu(II) and Ag(I) was confirmed via counter-current extraction. Moreover, stripping simulation tests confirmed that higher than 99.99% of Cu(II) and 99.2% of Ag(I) were stripped. The purities of Cu(II) and Ag(I) in the recovered solution were 95.2% and 99.993%, respectively. A process flow chart for the recovery of Cu(II) and Ag(I) from the nitrate leachate of the target industrial dust was also provided.

show abstract

Section: Introductionmentioning

confidence: 99%

Recovery of Copper(II) and Silver(I) from Nitrate Leaching Solution of Industrial Dust via Solvent Extraction with LIX63

Sun

Kim

Seo

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

show abstract

“…Solvent extraction is a potential technique for recovering metal ions from solutions because of its important advantages, such as simplicity, flexibility, economic benefits, rapidity, lower costs, and being environmentally friendly, among others 12,16) . The chelating agent, 5,8-diethyl-7-hydroxydodecan-6-oxime (LIX63), was reported to have a selectivity on silver from nitrate solutions containing Ag, Zn; or Ag, Ca, Fe, Si, Re and Zn 17,18) . Sodium thiosulfate and high concentration of HNO 3 was used for stripping of Ag from the loaded LIX63 17,18) .…”

Section: Introductionmentioning

confidence: 99%

“…The chelating agent, 5,8-diethyl-7-hydroxydodecan-6-oxime (LIX63), was reported to have a selectivity on silver from nitrate solutions containing Ag, Zn; or Ag, Ca, Fe, Si, Re and Zn 17,18) . Sodium thiosulfate and high concentration of HNO 3 was used for stripping of Ag from the loaded LIX63 17,18) . In this study, in order to Co., Ltd.) was used as the diluent, while ammonia water (25%, Junsei Chemical Co., Ltd.) was used in preparing the strippant solution.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Silver from Nitrate Leaching Solution of Silicon Solar Cells

Cho

Kim

Sun³

2021

Resour. Recycl.

Self Cite

View full text Add to dashboard Cite

Spent photovoltaic module is one of the important resource of silver, while related research concerning silver recovery remains limited. In our previous research, HNO 3 was utilized to dissolve Ag(I) and Al(III) from the spent silicon solar cells. In order to recover Ag(I) from the leachate of a silicon solar cell, the present study made use of a nitrate solution containing Ag(I) and Al(III), which was subjected to a solvent extraction process with 5,8-diethyl-7-hydroxydodecan-6-oxime (LIX63). Ag(I) was selectively extracted with LIX63 over Al(III) from the nitrate leach solution. Subsequently, quantitative stripping of Ag(I) from the loaded LIX63 was performed by using 20% ammonia water. The McCabe-Thiele plots for the extraction and stripping isotherms of Ag(I) were also constructed. Extraction and stripping simulation tests confirmed an Ag(I) extraction and stripping efficiency of >99.99% and 98.9%, respectively with high purity Ag (99.998%) and Al (99.99%) solution. A process flow sheet for Ag(I) recovery from the nitrate leach solution was proposed.

show abstract

“…In the past, mercury was also used in silver oxide batteries, but the new generation silver oxide batteries are mercury free. For this reason, mercury pollution is no longer a big concern for the recycling of waste silver oxide batteries. ,− Pyrometallurgical processes are utilized in some industrial practices due to their high efficiency and relatively simple procedures. However, pyrometallurgical processes usually require heavy investment for high temperature materials and facilities to capture toxic gases .…”

Section: Introductionmentioning

confidence: 99%

Recovery of High-Purity Silver from Spent Silver Oxide Batteries by Sulfuric Acid Leaching and Electrowinning

Wang

Peng

Yliniemi

et al. 2020

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

A sustainable and effective sulfuric acid-based process with the combination of facile acid leaching and electrowinning has been developed for the recovery of valuable elements from spent silver oxide batteries. Results suggest that the dissolution of elementary Ag was markedly promoted by the presence of MnO2 in the spent silver oxide batteries. Also, H2O2 was added to support an improved Mn and Ag extraction after 240 min of leaching. In the leaching step, 97% of silver and over 99% of Mn and Zn could be extracted under the optimum conditions: 1 mol/L H2SO4, a leaching temperature of 70 °C, an S/L ratio of 50 g/L, addition of 3 v/v % H2O2 at 240 min, and a total leaching time of 270 min. Ultra-pure silver (Ag w/w % ≥ 99.98%) was further recovered from the pregnant leaching solution (PLS) by potentiostatic electrowinning. Under the optimum deposition potential of −0.10 V and after 4 h of electrowinning, the silver recovery reached 98.5% with a high energy efficiency of 98.7%. Simultaneously, 5.6% Mn was recovered on the anode in the form of MnO2. Overall, these promising results suggest feasibility in the recycling of silver oxide batteries in sulfuric acid media.

show abstract

Separation of Silver (I) and Zinc(II) from Nitrate Solutions by Solvent Extraction with LIX63

Cited by 9 publications

References 13 publications

Recovery of Copper(II) and Silver(I) from Nitrate Leaching Solution of Industrial Dust via Solvent Extraction with LIX63

Recovery of Copper(II) and Silver(I) from Nitrate Leaching Solution of Industrial Dust via Solvent Extraction with LIX63

Recovery of Silver from Nitrate Leaching Solution of Silicon Solar Cells

Recovery of High-Purity Silver from Spent Silver Oxide Batteries by Sulfuric Acid Leaching and Electrowinning

Contact Info

Product

Resources

About