Results 31 to 40 of about 16,195 (202)

REVIEW OF THE IRON RECOVERY PROCESSES FROM LADEN LEACH LIQUORS IN HYDROMETALLURGY [PDF]

open access: yesSustainable Extraction and Processing of Raw Materials Journal, 2020
. Iron is usually present in higher concentrations in the laden solutions and its removal and elimination to a stable phase is a severe problem in hydrometallurgy. This article analyses and compares the processes of solvent extraction and ion exchange as
Plamen Georgiev   +4 more
doaj   +1 more source

The Effect of the Redox Potential of Aqua Regia and Temperature on the Au, Cu, and Fe Dissolution from WPCBs

open access: yesRecycling, 2017
Constant growth in waste electrical and electronic equipment (WEEE) levels necessitates the development of new, commercially viable recycling processes.
Heini Elomaa   +6 more
doaj   +1 more source

Lithium perrhenate catalyst for carbon aerogel-based supercapacitor

open access: yesSN Applied Sciences, 2020
Carbon aerogels are unique type of amorphous carbon-based materials with an extraordinary properties including light weight, well-developed and tailored pore structure, high specific surface area, low electrical resistivity and high purity.
Mateusz Ciszewski   +5 more
doaj   +1 more source

Jarosite stability on Mars [PDF]

open access: yes, 2005
Jarosite, a potassium (sodium) iron sulphate hydrated mineral, has recently been identified on the martian surface by the Opportunity rover. Using recent thermochemical data [Drouet and Navrotsky, 2003, Geochim. Cosmochim.
Drouet, Christophe   +2 more
core   +3 more sources

A robotic platform for high-throughput electrochemical analysis of chalcopyrite leaching [PDF]

open access: yes, 2015
A novel robotic platform for combinatorial screening of ionic liquid-based Cu extraction from chalcopyrite with real-time, in situ monitoring of dissolved copper.
Albrecht, T   +4 more
core   +1 more source

Comparison of phosphorus-based extractants on manganese separation from citrate leach solutions for recycling of lithium-ion batteries

open access: yesSouth African Journal of Science, 2023
The performance requirements of modern lithium-ion batteries (LIBs) necessitate the use of a number of scarce and strategically sensitive metals such as lithium and cobalt.
Tiaan Punt   +4 more
doaj   +1 more source

Pyrite oxidation under initially neutral pH conditions and in the presence of Acidithiobacillus ferrooxidans and micromolar hydrogen peroxide [PDF]

open access: yes, 2012
Hydrogen peroxide (H2O2) at a micromolar level played a role in the microbial surface oxidation of pyrite crystals under initially neutral pH. When the mineral-bacteria system was cyclically exposed to 50 μM H2O2, the colonization of Acidithiobacillus ...
Lin, C., Ma, Y.
core   +2 more sources

Options for Hydrometallurgical Treatment of Ni-Co Lateritic Ores for Sustainable Supply of Nickel and Cobalt for European Battery Industry from South-Eastern Europe and Turkey

open access: yesMetals, 2022
The automotive industry is in the process of transformation from the traditional production of vehicles with engines powered by the combustion of fossil fuels to vehicles powered by electric energy.
Srđan Stanković   +6 more
doaj   +1 more source

Optimization of Conditions for Processing of Lead–Zinc Ores Enrichment Tailings of East Kazakhstan

open access: yesMetals, 2021
This article presents the results of studies of a low-waste technology for processing enrichment tailings using a combined enrichment–hydrometallurgical method.
Nazym Seksenova   +4 more
doaj   +1 more source

Obtaining a bioadsorbent from orange peel suitable for batch and continous treatment [PDF]

open access: yes, 2020
One form of chemical contamination involves the contribution of heavy metals to the ecosystem mainly from industrial spills and mining operations. The most toxic heavy metals are cadmium, copper, chromium, mercury, nickel, lead and zinc.
García Raurich, Josep   +2 more
core   +3 more sources

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