Electric arc furnace dust (EAFD) of ferromanganese production units, in the form of slurry, contains tar, alkalies, manganese, zinc, iron, silica, calcium, aluminum and other elements. A hydrometallurgical route based on solvent extraction technique was investigated for selective separation of manganese from the dust. Leaching of the EAFD resulted in an aqueous feed containing 4 g/L of manganes...

In this study, a hydrometallurgical treatment involving the solvent extraction and recovery of some heavy metals from a sulphuric acid leach solution of galvanic sludge, using di-(2-ethylhexyl)-phosphoric acid (D2EHPA) and bis-(2,4,4-trimethylpentyl)-phosphinic acid (Cyanex 272), both diluted in kerosene, has been investigated. The preliminary tests revealed the necessity to remove other metal ...

electric arc furnace dust (eafd) of ferromanganese production units, in the form of slurry, contains tar, alkalies, manganese, zinc, iron, silica, calcium, aluminum and other elements. a hydrometallurgical route based on solvent extraction technique was investigated for selective separation of manganese from the dust. leaching of the eafd resulted in an aqueous feed containing 4 g/l of manganes...

The demand for palladium (Pd) has increased and this made it necessary to recover pure Pd from diverse secondary resources. To the small amount of Pd(II) present in spent electroplating solutions, is concentrated by cementation with zinc metal. In work, a hydrometallurgical process consisting leaching solvent extraction was developed cemented Pd. behavior Zn(II) synthetic HCl solution commercia...

In this work, separation of cobalt(II) over lithium(I) ions from aqueous chloride solutions by synergistic solvent extraction (SX) has been studied. A synergistic mixture of commercial extractants such as bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex 272) and tributyl phosphate (TBP) in kerosene was used as a selective extractant. The investigations were first performed to select optimal co...

In this study surface modified SBA-15, coated with octadecyltrichlorosilane (C18), is considered as an alternative adsorbent for metal ions in water. The SBA-C18 was loaded with Bis(2,4,4-trimethylpentyl) phosphinic acid (cyanex 272) as the metal ion extractant. The adsorption characteristics of phosphinic acid loaded SBA-C18 were evaluated for Cu(II) and Zn(II) ions in aqueous solution. Adsorp...

In this research, the kinetics of Co(II) extraction from sulfate medium by system “[C8H17NH3][Cyanex 272]+diluent sulfonated kerosene” were investigated using single drop falling technique. The time formation and coalescence was determined for calculating transfer flux. influences aqueous pH, concentration [C8H17NH3][Cyanex 272] on revised Co(II)-transfer flux (F') with aim obtaining reaction o...

Solvent extraction studies of copper and zinc have been carried out using Versatic 10 acid and Cyanex 272 separately from a model brass pickle liquor. Various parameters for the extraction and separation of copper and zinc such as effect of pH, extractant concentration, phase ratio etc. have been optimized. It was observed that copper was almost completely extracted into the organic phase compr...