Results 11 to 20 of about 171,397 (261)

Thermal Processing of Jarosite Leach Residue for a Safe Disposable Slag and Valuable Metals Recovery

open access: yesMetals, 2018
In electrolytic production of zinc, the iron levels in the solutions are controlled by precipitation of jarosite or goethite. These precipitates also co-precipitate unrecovered valuable metals (Zn, Pb, Cu, Ag) as well as elements of concern (As, Cd, Hg).
Minna Rämä   +5 more
doaj   +1 more source

Nanofiltration of Mine Water: Impact of Feed pH and Membrane Charge on Resource Recovery and Water Discharge

open access: yesMembranes, 2014
Two nanofiltration membranes, a Dow NF 270 polyamide thin film and a TriSep TS 80 polyamide thin film, were investigated for their retention of ionic species when filtering mine influenced water streams at a range of acidic pH values. The functional iso-
Mark Mullett   +2 more
doaj   +1 more source

Maleic, glycolic and acetoacetic acids-leaching for recovery of valuable metals from spent lithium-ion batteries: leaching parameters, thermodynamics and kinetics [PDF]

open access: yesRoyal Society Open Science, 2019
Environmentally friendly acid-leaching processes with three organic acids (maleic, glycolic and acetoacetic) were developed to recover valuable metals from the cathodic material of spent lithium-ion batteries (LiCoO2). The leaching efficiencies of Li and
Borui Liu   +7 more
doaj   +1 more source

Zinc recovery from bioleachate using a microbial electrolysis cell and comparison with selective precipitation

open access: yesFrontiers in Microbiology, 2023
Metal recycling is essential for strengthening a circular economy. Microbial leaching (bioleaching) is an economical and environmentally friendly technology widely used to extract metals from insoluble ores or secondary resources such as dust, ashes, and
Sabine Spiess   +7 more
doaj   +1 more source

The Effect of Different Additives and Medium on the Bioleaching of Molybdenite for Cu and Mo Extraction Using Mix Mesophilic Microorganism [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2013
Bioleaching processes for extraction of Cu and Mo from molybdenite cons. are more environmentally friendly and consume less energy than conventional technologies, yet less economically efficient.
Hadi Abdollahia   +5 more
doaj  

Efficient dealkalization of red mud and recovery of valuable metals by a sulfur-oxidizing bacterium

open access: yesFrontiers in Microbiology, 2022
Red mud (RM) is a highly alkaline polymetallic waste generated via the Bayer process during alumina production. It contains metals that are critical for a sustainable development of modern society.
Duo-rui Zhang   +12 more
doaj   +1 more source

Recent Monitored Factors and Reactor's Configuration for Enhancing Contamination Treatment by Photo-Electro-Catalysis Process [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
Photo-electro-catalysis process has received major attention in the past decade as a substitutional wastewater treatment technology. Photo-electro-catalysis process is widely employed for removing different pollutants (organic, and inorganic (cationic ...
Ghazal Ebraheim   +2 more
doaj   +1 more source

Cation Exchange Membranes and Process Optimizations in Electrodialysis for Selective Metal Separation: A Review

open access: yesMembranes, 2023
The selective separation of metal species from various sources is highly desirable in applications such as hydrometallurgy, water treatment, and energy production but also challenging. Monovalent cation exchange membranes (CEMs) show a great potential to
Önder Tekinalp   +4 more
doaj   +1 more source

Investigation of the deposition behaviour of cobalt on 304 stainless steel in a simulated spent nuclear fuel pool

open access: yesNuclear Materials and Energy
The accumulation of radioactive corrosion products, specifically 58Co and 60Co, on metallic material (304 stainless steel) surface in spent nuclear fuel (SNF) pools is among the main factors of radioactive contamination.
Jian Deng   +5 more
doaj   +1 more source

Silver Recovery from Printed Circuit Based Using Deep Eutectic Solvent-Glyceline (DES-Glyceline) [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
Silver is an element with the highest thermal and electrical conductivity, making it ideal for electrical applications. One of the most commonly consumed electronic wastes containing silver is Printed Circuit Boards (PCBs).
Soja Fatimah   +4 more
doaj   +1 more source

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