Results 31 to 40 of about 16,783 (163)

SELECTIVE ELECTROEXTRACTION OF BASE METALS FROM LEACHING SOLUTIONS OBTAINED DURING THE RECYCLING OF WASTE PRINTED CIRCUIT BOARDS. II. SELECTIVE POTENTIOSTATIC ELECTRODEPOSITION OF COPPER, TIN AND LEAD

Studia Universitatis Babes-Bolyai Chemia, 2021
This paper presents our results concerning the feasibility of selective potentiostatic electroextraction of copper, tin and lead from leaching solutions obtained during the recycling of base metals from waste printed circuit boards.
Marian-Iosif FRÎNCU, Eniko COVACI, Sorin-Aurel DORNEANU, Petru ILEA   +3 more
doaj   +1 more source

Recovery of the valuable metals from complex converter slag at elevated temperature with sulfuric acid solution [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2019
The aim of this paper was exploring the effective utilization of nickel converter slag by means of the methodology of pressure oxidative leaching.
Liao Y.-L., Shi G.-C., Huang F.-R., Zhang Y.   +3 more
doaj   +1 more source

Comparative Study for Selective Lithium Recovery via Chemical Transformations during Incineration and Dynamic Pyrolysis of EV Li-Ion Batteries

Metals, 2021
Selective leaching of Li from spent LIBs thermally pretreated by pyrolysis and incineration between 400 and 700 °C for 30, 60, and 90 min followed by water leaching at high temperature and high L/S ratio was examined.
Srija Balachandran, Kerstin Forsberg, Tom Lemaître, Nathália Vieceli, Gabriele Lombardo, Martina Petranikova   +5 more
doaj   +1 more source

Selective leaching of metals from mechanically activated sulphides [PDF]

Acta Montanistica Slovaca, 1998
The selectivity of leaching of sphalerite, tetrahedrite, arsenopyrite, bornite and chalcopyrite was studied. We can affect selective leaching in additon to suitable mechanochemical pretreatment of solid phase also by the choice of suitable leaching agent
Achimovičová Marcela
doaj  

Separation and Extraction of Rhenium from Waste Acid via Selective Precipitation and Atmospheric Pressure Leaching

Separations
This study presents a combined process of sulfide precipitation followed by hydrogen peroxide leaching for rhenium recovery from copper smelting waste acid under ambient temperature and pressure. The process first removed copper through selective sulfide
Hancheng Mao, Shengdong Wang, Muyao Lu, Haibei Wang, Denggao Zhang   +4 more
doaj   +1 more source

A selective recovery of zinc and manganese from the spent primary battery black mass as zinc hydroxide and manganese carbonate

Open Engineering
The major challenge in zinc–carbon battery recycling lies in achieving selective separation of zinc and manganese while producing high-purity materials suitable for advanced applications. This study aims to develop a selective hydrometallurgical approach
Yudha Cornelius Satria, Winard Naufal Atha, Sulistyowati Anggraini Putri, Arinawati Meidiana, Apriliyani Enni   +4 more
doaj   +1 more source

Monosodium Glutamate as Selective Lixiviant for Alkaline Leaching of Zinc and Copper from Electric Arc Furnace Dust

Metals, 2020
The efficacy of monosodium glutamate (MSG) as a lixiviant for the selective and sustainable leaching of zinc and copper from electric arc furnace dust was tested.
Erik Prasetyo, Corby Anderson, Fajar Nurjaman, Muhammad Al Muttaqii, Anton Sapto Handoko, Fathan Bahfie, Fika Rofiek Mufakhir   +6 more
doaj   +1 more source

A Review of the Application of Oxalic Acid in Hydrometallurgical Processes

Separations
Conventional hydrometallurgical processes typically employ inorganic acids as leaching agents; however, these processes are frequently associated with significant environmental pollution and suffer from poor metal selectivity.
Muling Sheng, Zishuai Liu, Zhihui Zhao, Qianwen Li, Wenbin Liu, Heng Luo, Yancheng Lv   +6 more
doaj   +1 more source

Recovery of Potassium and Phosphorus from Digested Sludge Ash via Selective Multi-step Leaching

Chemical Engineering Transactions
Digested sludge represents a waste biomass derived from anaerobic digestion processes that require proper management due to its harmful pathogen content. The most common management route is incineration, which allows a reduction in volume.
Domenico Rosa, Martina Fazi
doaj   +1 more source

Leaching and thermal decomposition of mechanically activated sphalerite-pyrite mixture [PDF]

Acta Montanistica Slovaca, 1997
The effect of mechanical activation and pyrite addition on the thermal decomposition and acid leaching of sphalerite was studied. Mechanical activation enhances both hydrometallurgical and pyrometallurgical processing of sphalerite.
BalហPeter
doaj