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 …

The Effective Electrolytic Recovery of Dilute Copper from …

In this study, the optimal conditions, including effect of iron concentration, effect of electric current, for electrolytic recovery of Cu +2 ions in simulated copper solution.

Recent advances in preferentially selective Li recovery from spent …

He et al. [72] reported a new environmentally friendly recovery process for the selective separation of Li from spent LMO batteries via sulfation roasting with waste copper. 99.5% of Li from cathode materials was selectively transformed into Li 2 SO 4, whereas Mn was converted to FeMnO 3 and Mn 2 O 3 in the filter residue.

Recovery of Copper, Nickel and Zinc from Sulfate …

Recovery of Copper, Nickel and Zinc from Sulfate ... Chalcopyrites, pentaldite, spent catalyst, batteries, brass ash, zinc ash are some of the major ... copper, nickel and zinc sulfate solutions. The extraction of these metals with 0.005 M LIX 984N as a function of pH was studied. The extraction of these metals depends mainly on the

(PDF) Electrochemical Recovery of Copper from …

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 ...

Recovery of metal sulphates and hydrochloric acid from spent …

Pulp density and pH were optimized to achieve maximum recovery of copper and simultaneous removal of iron in bioleaching. It was found that the optimum conditions were pulp density 60 g/L and pH 0.5–1.0. Nearly of copper was recovered and 51.94% of iron was removed under optimum conditions.

Recovery of cupric chloride from spent copper etchant solutions…

Tadeusz et al. (1997) removed copper ions from sulfate type copper electroplating waste solutions by using scrap iron. Stirring scrap iron together with the solution or circulating the solution alone through motionless suspended scrap iron resulted in a greater cementation effect than increasing the iron surface if no stirring was applied.

Recovery and Recycling of Metals From Spent Lithium-Ion …

In addition, the emew system recovers copper from a wide range of concentration levels. emew utilizes two technologies to extract copper from Li-Ion battery black mass leachate to very low concentrations. emew Plate removes over 90% of copper from nickel-pregnant leach solutions to below 5 g/L while emew Polish removes the balance enabling 99.9 ...

The Effective Electrolytic Recovery of Dilute Copper from …

The behavior of iron during electro-winning of copper from sulphate electrolytes is well known, and its effect on the performance of the copper electro-winning process has been reported by [12 – 15] who have examined the interaction of iron [Fe +2, Fe +3] during copper electro-winning from dilute solutions, and Cooke et al. (1990) who have ...

Recovery of cupric chloride from spent copper etchant …

Table 1 shows the chemical composition of the spent copper etchant solution. Fig. 2 shows a conceptual flow sheet of the whole process of recovery. Fig. 3 shows the effect of dilution on variation of the pH value of the spent copper etchant solution. Experiments were conducted at room temperature.

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 ...

Recovery of copper from printed circuit board (PCB) acidic …

Human health risk assessment indicated that the hazard quotients of As account for 87.5% of the entire HI value, while the average carcinogenic risk values of As for copper sulfate, copper oxide ...

Recovery of Copper Sulphate from Sulphuric …

Copper was precipitated using acetone in the form of copper sulphate (CuSO4.5H2O) from copper-rich PLS (≈27 g/L Cu) with an almost complete recovery of copper (99.7%).

(PDF) Copper Recovery by the Cementation Method

A novel purification method for copper sulfate using ethanol

Another method of producing copper sulfate is to place metallic copper in a solution of nitric acid, sulfuric acid and water. In this method, nitric acid acts as an oxidizing agent, allowing copper to be converted to copper oxide (Atwood and Curtis, 1994). ... Recovery of metallic values from spent Li ion secondary batteries. Trans. Inst. Min ...

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

COMBINED ION EXCHANGE -SOLVENT EXTRACTION PROCESS FOR COPPER RECOVERY

The key findings of the process are: (1) The process is suitable for recovery of copper from PLS with metal concentrations, varying on a broad range as well as for treatment of solutions in the decommissioning of spent copper dumps, acid mine drainage /AMD/ and ammonia etch solutions; (2) Can be operating effectively with very lowgraded copper ...

An overview of the recovery of acid from spent acidic …

Boucher et al. [21] studied the recovery of spent sulphuric acid from effluent generated in zinc hydrometallurgical industry by electro-dialysis (ED). 2.2.2. Copper bleed stream (CBS) ... [67] studied the effect of various parameters to produce copper sulphate, mixed crystals by crystallization from copper bleed solution. Nyirendra and Phiri ...

(PDF) Recycling and recovery of spent …

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;

Recovery of sulfuric acid from copper tank house electrolyte …

A real solution from the production of copper-coated steel wire, containing 1.45 mol/L of sulfuric acid, 0.67 mol/L of ferrous sulfate and 0.176 mol/L of copper sulfate was processed. Diffusion dialysis with anion-exchange membranes was used to …

Recovery of cupric chloride from spent copper etchant …

way, the copper product with the retained Pb and Cd could be returned to the foundry. Tadeusz et al. (1997) removed copper ions from sulfate type copper electroplating waste solutions by using ...

Cobalt and zinc recovery from copper sulphate solution by …

The copper sulphate solution obtained after leaching also contained cobalt and zinc as valuable metals. While copper could be selectively extracted from aqueous solution with LIX 984 (Henkel, 1996; Rodriguez de San Miguel et al., 1997; Townsend and Servers, 1990), direct extraction of cobalt and zinc with usual extractants was not selective.

Cementation of copper from spent copper-pickle sulfate …

DOI: 10.1016/J.HYDROMET.2011.08.007 Corpus ID: 94671426; Cementation of copper from spent copper-pickle sulfate solution by zinc ash @article{Ahmed2011CementationOC, title={Cementation of copper from spent copper-pickle sulfate solution by zinc ash}, author={Ismail Mohamed Ahmed and Y. A. El-Nadi and Jacqueline Abdel Messih Daoud}, …

Influence of ionic liquid (R4PSCN) for selective separation …

Separation and recovery of copper (Cu) from sulphate mediated Cu Cr spent catalyst leach solution through solvent extraction approach has been systematically investigated. A number of Ionic Liquid (IL) and other conventional extractants were used while investigating the selectivity and efficient extraction tendency of either IL or extractants towards Cu(II).

(PDF) Cementation of copper from spent copper-pickle sulfate …

Chemistry Journal of Moldova, 2021. The purpose of this study was to investigate the physicochemical particularities of the regeneration processes that occur in spent sulphate copper-zinc solutions using the reagent methods of crystallization, cementation, and sedimentation.

Effect of EDTA and CH2O on copper recovery from …

The simulated electroless copper plating spent rinse water was prepared using anhydrous copper sulfate (CuSO 4 ·5H 2 O, > 99%, Shimakyu's Pure Chemicals), ethylenediaminetetraacetic acid or EDTA (C 10 H 16 N 2 O 8, 99%, Scharlau) and formaldehyde (CH 2 O, 37%, Katayama Chemical Co., Ltd.).

Printed Circuit Board Recycling Methods

Figure 4: Recovery of copper hydroxide from copper sulfate solution in PTH process 3.6 Recovery of copper from the rack stripping process The stripping process is done to remove copper from the rack and uses nitric acid. The copper in the spent nitric acid is in the form of copper ion. Spent acidic etching solution press Reactor Spent basic

Copper, zinc, and nickel recovery from printed circuit

Copper recovery was about 90% and the conclusion was that ammonia is more selective than sulphuric acid and that hydrogen peroxide is an important oxidizing agent for copper. ... Effect of ammonia sulphate on the copper (a ... Migo VP, Movillon JL, Rebancos CM (2012) Recovery of copper from spent solid printed circuit board (PCB) wastes of a ...

Recovery of Copper from Spent Solid Printed-Circuit-Board …

The recovery of copper from solid printed circuit board (PCB) waste, by sequential acid dissolution and electrochemical deposition, was investigated as a resource recovery strategy for a local PCB-manufacturing facility. The fi rst stage acid dissolution process extracts the embedded copper metal from the solid PCB matrix in the form of copper ions, and the second …

Copper Recovery (as Copper Sulphate) Process of Spent …

A Korean company is offering a technology in which cure process is developed as a method of treating copper-rich spent etchant to recover copper as Copper Sulphate and also reuse the treated clean solution as alkali etchant. Cure offers 99% recovery rate and the purity of 99.9% of Copper Sulphate.

Copper recovery by the cementation method

Cyanide-free, sulphate-based copper electroplating waste solutions and spent nitric acid solutions from the etching of copper were investigated for copper recovery by cementation.

Recovery of cupric chloride from spent copper etchant solutions…

Cyanide-free, sulphate-based copper electroplating waste solutions and spent nitric acid solutions from the etching of copper were investigated for copper recovery by cementation.

Copper Recovery

Mankind has been using copper for approximately 10,000 years, and its use continues to underpin global economic development. Today however, the combination of high mining costs, increasingly stringent environmental obligations, and exhaustion of historically important metal sources has led to increased interest in recovering marketable copper products from acid mine drainage …

Copper Sulphate Crystallisation Plants at Remote Ore …

copper concentrations of the spent and advance electrolyte). • Copper sulphate crystallisation has been successfully implemented in South America with the establishment of two plants established by Despromin (2016). • The modular approach adopted for the construction of copper sulphate crystallisation plants

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 …

Process development for the separation and recovery of copper …

The aim of the present study is to optimize conditions on a lab scale for the solvent extraction separation and recovery of copper from concentrated sulphate leach liquor obtained by the dilute sulphuric acid pressure leaching of synthetic Cu–Ni–Co–Fe matte similar to the matte generated by the reduction roasting and smelting of Pacific Ocean nodules (Nam et al., 2003) …