Thiourea, as an alternative medium, is one of the most promising leaching agents for gold recovery by its commercial benefits and research challenges associated with performance environmental impacts. This review article describes operational conditions use Thiourea vs cyanide, chemistry, limitations, toxicity factors, environment, processes. Although thiourea extraction processes have not been...

The current study investigates the energy consumption and corresponding global warming potential (GWP) of tellurium recovery from multimetal solution by use a tailored electrochemical approach based on electrodeposition-redox replacement (EDRR). A three-electrode cell was used to recover Te synthetically prepared pregnant leach similar PLS leached Doré slag (30% aqua regia, [Cu] = 3.9 g/L, [Bi]...

In pursuit of carbon neutrality, the demand for metals that are necessary development clean energy technologies is rapidly increasing. Metallurgical waste, such as slag, presents a promising secondary source these key metals. This research aims to develop an eco-friendly hydrometallurgical process recover Cu, Ni, and Co from discarded copper/nickel slag. High-pressure acid leaching (HPAL) was u...

Zinc filter cakes (ZFCs) have economic values as secondary sources, but also are classified hazardous waste and negative effects on human health the environment because they contain several heavy metals. Especially extraction recovery of lead zinc metals from ZFCs will provide environmental benefits. Therefore, in this study, with a weak acid (ammonium acetate, AmAc) leaching was investigated, ...

Wireless sensor network (WSN) requires robust and energy efficient communication protocols to minimise the energy consumption as much as possible. However, the lifetime of sensor network reduces due to the adverse impacts caused by channel fading and interference in WSN. A cluster based cooperative multi input multi output (MIMO) routing scheme is proposed as a solution for this problem. Two MI...

Separation methods for rare earth elements (REE) are predominantly based on solvent extraction procedures. These methods are low in metal selectivity and generate large amounts of waste resulting in high capex and opex costs. Molecular Recognition Technology (MRT) is a much simpler green chemistry process that uses no organic solvents and carries out separations with highly metal-selective Supe...

For the solvent extraction of copper from pregnant leach solutions, (PLS) a wide range modern extractants is currently offered on market, and its choice very important issue in production using SX-EW (Solvent Extraction Electrowinning) technology. The purpose this work was to determine optimal extractant for processing productive solutions Almaly deposit SX-EW. studies were carried out with sol...

Purpose is to increase uranium content in a PR solution while developing technique varying oxidation-reduction potential of leach with its oxygenation and identify changes the depending upon sulfuric acid concentration as well transportation distance solution. Methods. A laboratory facility, involving tank, pump, Venturi tube, tank install oxygen analyzer, dump has been manufactured under lab c...

Abstract Tannic acid–acetic acid is proposed as novel and green chemicals for cobalt lithium recycling from spent lithium-ion batteries through a leaching process. The synergism of both acids was documented batch continuous studies. promotes dissolution by reducing insoluble Co 3+ into soluble 2+ , while acetic critical to improve the stabilize metals in pregnant leach solution. Based on studie...

Recovery of gold from copper-rich ores has proved challenging. Dissolved copper in cyanide-deficit leach solutions severely interferes with adsorption resulting low recoveries onto activated carbon or ion exchange resins. This study reports the efficiency different adsorbents for selective recovery copper-containing cyanide leachate. Activated (NORIT GAC 1240), mixed base (Purogold A193), stron...