Recovery of silver metallization from damaged silicon cells

Kuczyńska-Łażewska, Anna; Klugmann-Radziemska, Ewa; Sobczak, Zuzanna; Klimczuk, Tomasz

doi:10.1016/j.solmat.2017.12.004

Cited by 56 publications

(25 citation statements)

References 18 publications

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“…The corresponding change in equilibrium pH was from 0.63 to 1.47. The Ag(I) and Zn(II) concentrations in these experiments were fixed at 30 and 6.8 g/dm 3 , respectively, while the concentration of D2EHPA diluted in kerosene was maintained at 0.5 mol/dm 3 .…”

Section: Effect Of Equilibrium Ph On the Extraction Of Metalsmentioning

confidence: 99%

“…Zn(II) from loaded D2EHPA In order to recover Ag(I) and Zn(II) from the loaded D2EHPA, stripping experiments were performed by using HNO 3 and a mixture of 0.01 mol/dm 3 HNO 3 and thiourea as strippants. Based on the hard and soft acid and base theory (HSAB theory), thiourea is a soft ligand and effective in stripping of Ag + from the loaded organic phase.…”

Section: Selection Of Strippant For Stripping Of Ag(i) Andmentioning

confidence: 99%

“…Based on the hard and soft acid and base theory (HSAB theory), thiourea is a soft ligand and effective in stripping of Ag + from the loaded organic phase. The loaded D2EHPA was obtained by mixing the feed solution containing 30 g/dm 3 Ag(I), 6.8 g/dm 3 Zn, and 0.01 mol/dm 3 HNO 3 with 1 mol/dm 3 D2EHPA at an A/O ratio of 1/1. The concentrations of Ag(I) and Zn(II) in the loaded D2EHPA were 0.6 and 2.9 g/dm 3 , respectively.…”

Section: Selection Of Strippant For Stripping Of Ag(i) Andmentioning

confidence: 99%

See 2 more Smart Citations

Solvent Extraction Separation of Silver(I) and Zinc(II) from Nitrate Leach Solution of Spent Silver Oxide Batteries with D2EHPA

2019

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In this study, separation of silver(I) and zinc(II) from nitrate leach solution of spent silver oxide batteries were carried out by extraction and selective stripping. Di-(2-ethylhexyl) phosphoric acid (D2EHPA) was used to extract Zn(II) and Ag(I) in the equilibrium pH range of 0.991.34. The extraction of Zn(II) was more affected by the pH value than that of Ag(I). Zn(II) and Ag(I) loaded in D2EHPA was separated by selective stripping with a mixture of 0.01 mol/dm 3 nitric acid and 1 mol/dm 3 thiourea and 0.5 mol/dm 3 nitric acid for Ag(I) and Zn(II), sequentially. A process flowsheet for the separation and recovery of Zn(II) and Ag(I) from the nitrate leach solution of spent silver oxide batteries was proposed.where c a,s is metal ion concentration in the aqueous phase

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Section: Effect Of Equilibrium Ph On the Extraction Of Metalsmentioning

confidence: 99%

Section: Selection Of Strippant For Stripping Of Ag(i) Andmentioning

confidence: 99%

Section: Selection Of Strippant For Stripping Of Ag(i) Andmentioning

confidence: 99%

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Solvent Extraction Separation of Silver(I) and Zinc(II) from Nitrate Leach Solution of Spent Silver Oxide Batteries with D2EHPA

2019

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“…However, Ag is a very valuable material and has a relative value of almost half the cost of making PV modules [3]. For this reason, some studies have reported on the recovery of Ag from PV module components [11][12][13][14][15][16][17][18], including extraction with inorganic acid [17,18]. However, this method is not environmentally friendly, as it results in the generation of waste solutions.…”

Section: Introductionmentioning

confidence: 99%

Restoring the Reactivity of Organic Acid Solution Used for Silver Recovery from Solar Cells by Fractional Distillation

Lee

Ahn

et al. 2019

Sustainability

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Methanesulfonic acid (MSA) is used to recover silver (Ag) from solar cells by adding an oxidizing agent. It is possible to regenerate by substituting of H+ for Ag+, and thus it can be reused for additional reactions. However, MSA is highly hygroscopic, and as an oxidizing agent can easily decompose in the acidic environment during Ag extraction, leading to dilution due to the formation of H2O. This H2O in the MSA solution hinders the Ag extraction. In this study, we present a fractional distillation process for restoring the reactivity of reused MSA solutions by reducing the H2O content. Our results showed that the reactivity of the separated MSA was restored and Ag could be recovered from the solar cell.

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“…On the contrary, E-waste is considered the copious supply of different pedestal materials or the metallic body likely as: Cu, Zn, Al; s well as other valuable metallic bodies such as: Au, Ag and Pt [9,10]. That is predictable that an archetypal considerable circuit board is consist of 40% of metal substances, 30% of Plastics substances and 30% of ceramics of its total weight (Waste Printed Circuit Boards (WPCBs) [11,12].…”

Section: Introductionmentioning

confidence: 99%

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2019

International Advanced Research Journal in Science, Engineering

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With the continual modernization, researchers and scientists are very conscious about the environmental issues. The E-waste which is relatively recent addition to the waste stream in the form of discarded electronic and electric equipment is getting increasing attention from policy makers as the quantity being generated rising rapidly. The consumption of e-waste has been exponential in the last two decades. The developing countries are facing huge challenges in the management of e-waste which are either internally generated or imported illegally as used goods in an attempt to bridge the so-called "digital divide". E-waste contains hazardous constituents that may negatively impact the environmental and affect human health if not properly managed. On the other hand, e-waste contains up to 60 metals including platinum, gold, silver, copper, aluminium, palladium, iron and other valuable metals. Considering these two facts along with the resource management strategy has been committed to extract precious metals from Printed Circuit Board (PCB) of e-waste. In this study, Printed Circuit Board (PCB) are collected from the motherboards of waste computers and performing several reactions in a chemical lab. Al 2 (SO) 4 has been prepared by using sulfuric acid and potassium hydro-oxide and CuSO 4 prepared by using nitric acid and sulfuric acid. In this preparation process the top most priority is placed on the environment friendly issues. This study will very helpful in the proper management of ewaste and reservation of our resources which are limited. 2 circuit, cathode ray tubes. In the same contrary, the components represent the valuable part of circuit which fabricates different metallic bodies containing copper and gold, zinc and others [16].Actually, in last decades, the quantity of CRT monitors as the form of television as well as computers is considered as the replacement Liquid Crystal Displays (LCD) The prediction goes that around 8.5 thousand tons televisions as well as computer monitors are redundant in the south Asia every year. These same circumstances are found in other industrial, developed with developing state in the world. So, this ratio indicated that re cycle must be needed [17]. As a result, during the last decades, numerous explorations have been planned or aimed at the innovation of reasonable techniques withdrawal for precious metallic substances. This process is continuing from the last several decades. Basically, these processes are divided in different ways such as physical, hydrometallurgical, bio metallurgical, and hydrometallurgical as well as electrochemical procedures. Here used the electrochemical techniques which are considered the most competent because lower discharge of poisonous gases with lower volatile metals, lower energy of expenditure, and small waste production with its easier operational circumstances.

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Recovery of silver metallization from damaged silicon cells

Cited by 56 publications

References 18 publications

Solvent Extraction Separation of Silver(I) and Zinc(II) from Nitrate Leach Solution of Spent Silver Oxide Batteries with D2EHPA

Solvent Extraction Separation of Silver(I) and Zinc(II) from Nitrate Leach Solution of Spent Silver Oxide Batteries with D2EHPA

Restoring the Reactivity of Organic Acid Solution Used for Silver Recovery from Solar Cells by Fractional Distillation

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