Process Development for the Recovery of Manganese …
The smelting reduction of spent lithium-ion batteries at high temperature results in metallic alloys containing cobalt, copper, nickel, and manganese, in addition to aluminum and lithium oxides. A process has been proposed to selectively recover high-purity powders of manganese dioxide, cobalt(II) sulfate, and nickel(II) sulfate from these ...
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Recycling and recovery of spent copper—indium—gallium …
Copper—indium—gallium—diselenide (CIGS) is a fast-evolving commercial solar cell. The firm demand for global carbon reduction and the rise of potential environmental threats necessitate spent CIGS solar cell recycling. In this paper, the sources and characteristics of valuable metals in spent CIGS solar cells were reviewed. The potential environmental impacts …
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Copper recovery and spent ammoniacal etchant …
Finally, successful pilot-scale experiments were conducted on a hollow fiber membrane contactor with a surface area of 130 m 2.The process results in copper removal by a factor of ∼3000 from spent etching solution through the membrane and formation of nearly saturated copper sulfate solution in the sulfuric acid, used as a striping phase. . Compositions …
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Recovery of Al, Co, Cu, Fe, Mn, and Ni from Spent …
The sulphate metal solution generated is an ideal starting point for solvent extraction processes to recover the contained valuable metals. An increase in leaching efficiency can likely be achieved by elevating reaction …
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Solvent Extraction for Separation of 99.9% Pure …
In this work, hydrometallurgical recycling of metals from high-cobalt-content spent lithium-ion batteries (LIBs) from laptops was studied using precipitation and solvent extraction as alternative purification processes. Large …
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Recovery of Copper, Nickel and Zinc from Sulfate
Flow -sheet for the recovery of copper, nickel and zinc from a leach liquor containing 0.150 g/L copper, 0.140 g/L nickel and 0.163 g/L zinc Nickel (organic) g/L
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Closed-Loop Electrochemical Recycling of Spent Copper(II) …
Developing effective technologies for treatment of spent etchant in printed circuit boards industries is of paramount for sustainable copper reuse and reducing copper …
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Recovery of cobalt sulfate from spent lithium ion batteries …
Cobalt sulfate was recovered from crushed and screened prismatic type spent lithium ion batteries (LIBs) containing 5–20% Co, 5–7% Li, 5–10% Ni, 15% organic chemicals, and 7% plastics together with Cu, Al, Fe, and Mn. Cobalt was reductively leached from the − 16 mesh fraction in 1 h by stirring with 2 M H 2 SO 4 and 6 vol.% H 2 O 2, at 60 °C and 300 rpm …
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Recovery of metallic values from spent Li ion secondary …
After digestion in sulphuric acid, copper was recovered with 96% recovery efficiency as copper sulphate (CuSO 4 .3H 2 O) with the addition of ethanol at a volume ratio of 3:1.
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(PDF) Recycling and recovery of spent copper—indium
Recycling and recovery of spent copper—indium—gallium—diselenide (CIGS) solar cells: A review. April 2023; International Journal of Minerals Metallurgy and Materials 30(6):989-1002;
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Copper Recovery from Printed Circuit Boards Using …
Oishi studied the recovery of copper from WPCBs using ammonium sulphate and chlorine solutions, and they verified the ammonium sulphate system has higher selectivity than the chloride system. Yang [ 26 ] also tested the extraction of copper from PCBs; using the ammonia system they recovered 96.7% of copper with ammonium sulphate solutions ...
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Cementation of copper from spent copper-pickle sulfate …
The results showed that about 99% of copper could be recovered from the sulfate solution of initial pH = 2 with solid/liquid ratio = 0.05 after 30 min of continuous shaking. Kinetic investigations showed that the cementation reaction follows a first order reaction and the …
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(PDF) Electrochemical Recovery of Copper from Spent
This work aims at studying the electrolytic recovery of copper from spent ammoniacal etching solutions.The high chloride concentration of these solutions causes serious corrosion problems due to ...
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Copper Cementation with Zinc Recovered from Spent …
In this study, the usability of waste zinc obtained from spent zinc–carbon batteries for copper cementation was examined. The effects of the initial concentration of copper ions, rotation speed of the zinc plate, initial pH of solution, and reaction temperature on copper cementation were investigated. It was determined that the cementation rate increased with …
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(PDF) Recycling and recovery of spent …
The main recovery methods of valuable metals in the various types of spent CIGS, including hydrometallurgy, pyrometallurgy, and comprehensive treatment processes, were compared and discussed....
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Recovery of copper from process waters by
DOI: 10.1016/J.DESAL.2007.11.070 Corpus ID: 97570024; Recovery of copper from process waters by nanofiltration and reverse osmosis @article{Csfalvay2009RecoveryOC, title={Recovery of copper from process waters by nanofiltration and reverse osmosis}, author={Edit Cs{'e}falvay and Viktor Pauer and P{'e}ter Mizsey}, journal={Desalination}, year={2009}, volume={240}, …
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Recovery of copper and tin from stripping tin solution by
The typical stripping tin solution of tinned copper wastes, which was obtained by the displacement process, consisted of copper sulfate, stannous sulfate, sulfuric acid, and cresol sulfonic acid. At the end of a tin-strip process, the total concentration of both Cu 2+ and Sn 2+ in the solution was 0.56 mol·L −1, and the molar ratio of Cu 2 ...
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Recovery of copper from printed circuit board (PCB) acidic …
Reclamation of copper is necessary for resource recovery and environmental protection. Herein, ammonia (NH 3 ·H 2 O) and sodium hydroxide (NaOH) were investigated and compared as neutralizers to regulate the sequential crystallization of basic copper chloride (Cu 2 (OH) 3 Cl), copper hydroxide (Cu(OH) 2), and copper sulfate (CuSO 4 ·5H 2 O ...
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Recovery of copper powder from copper concentrates and …
Copper concentrates can be sulfation roasted and leached with water to produce impure solutions of copper(II) sulfate. Copper sulfites are precipitated from aqueous copper(II) sulfate solutions with soluble salts of sulfurous acid like (NH 4) 2 SO 3 or Na 2 SO 3.The water insoluble copper sulfites dissolve in acetonitrile—water (AN/H 2 O) and reduce Cu 2+ to give …
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Copper Recovery from Printed Circuit Boards Using …
Copper was recovered directly from the ammonia–ammonium sulphate leaching solutions by electrowinning. An aluminium plate of 8 cm × 2.5 cm was used as cathode and a …
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Early-stage recovery of lithium from spent batteries via CO2 …
Considering process-related challenges posed by conventional recovery methods, specifically extraction of Li, this study proposed an early-stage Li recovery process from spent LIBs using ...
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Recovery of copper from spent catalyst using acid …
Recovery of copper from spent catalyst using acid ... synthetic leach liquor of acidified copper sulphate using rotat-ing square cathode electrochemical reactor. Abdel-Aziz et al.
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A novel purification method for copper sulfate using ethanol
Semantic Scholar extracted view of "A novel purification method for copper sulfate using ethanol" by S. Aktaş ... A novel approach based on solvent displacement crystallisation for iron removal and copper recovery from solutions of semi-pilot scale bioleaching of WPCBs. ... Recovery of metallic values from spent Li ion secondary batteries.
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A Review of Acid Copper Plating Bath Life Extension
There are three main types of acid copper baths: the copper sulfate bath, the copper fluoborate bath, and the bright acid copper bath (with organic additives). The typical uses for acid sulfate are: printed wiring boards, undercoat for nickel + chromium plate, rolls, electroforming, and plating on plastics.2 Impurities
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Recovery of vanadium from spent refinery catalysts: …
This study developed an effective and practical process for recovering vanadium as vanadium pentoxide (V2O5) from spent refinery catalysts. It involves four stages: leaching, purification, precipitation, and calcination. Vanadium was first leached using NaOH; then, the solution was purified by precipitation. Next, vanadium was recovered as ammonium …
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Treatment of ammoniacal copper etchants
A patent [ 8] describes application to copper recovery from a spent ammoniacal sulphate etchant with the main anode reaction being oxygen evolution. The results of a study of copper deposition from cuprous and 120 cupric ammine solution at a rotating disc electrode have been presented in a series of papers [9-11].
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A comprehensive review on the recovery of copper values …
Sukla et al. [91] employed ammonium sulphate as an additive for the recovery of copper, nickel, and cobalt. Under optimized conditions (roasting temperature of 400 °C for 60 …
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A comprehensive review of the recovery of spent lithium …
A comprehensive review of the recovery of spent lithium-ion batteries with molten salt method: Progress, shortcomings and prospects. Author links open overlay panel Yidi Liu, ... (200–600 °C), (b) displays 3D mass spectra based on FTIR, illustrating the gases generated and measured during sulfate-regulated oxidative roasting, ...
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(PDF) Cementation of copper from spent copper-pickle sulfate …
In this context, the present work studies the use of one of the solid industrial waste, which is zinc ash resulting from hot dipping galvanizing of steel, for cementation of copper from sulfate medium in order to assess the conditions for maximum recovery of copper.
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Cementation of copper from spent copper-pickle sulfate …
The removal of copper ions by cementation has been studied by a number of researchers who used different methods to enhance the rate of cementation. 5, 6 Zinc has been chosen as sacial metal ...
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