Results 11 to 20 of about 3,134,068 (245)

Early-Stage Recovery of Lithium from Tailored Thermal Conditioned Black Mass Part I: Mobilizing Lithium via Supercritical CO₂-Carbonation

Metals, 2021
In the frame of global demand for electrical storage based on lithium-ion batteries (LIBs), their recycling with a focus on the circular economy is a critical topic.
Lilian Schwich, Tom Schubert, Bernd Friedrich   +2 more
doaj   +1 more source

Pyrometallurgical treatment of jarosite residue with a mixture of CaO, SiO2, and CaSi [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy
During the electrolytic production of zinc, the iron in solutions is mainly controlled by the precipitation of jarosite. This precipitate also contains valuable metals (Zn, Pb, Cu, Ag) and toxic elements (Hg, Cd, As).
Jiménez-Lugos C., Flores-Favela M., Romero-Serrano A., Hernández-Ramírez A., López-Rodríguez J., Cruz-Ramírez A., Colin-García E.   +6 more
doaj   +1 more source

Rota hidrometalúrgica de recuperação de molibdênio, cobalto, níquel e alumínio de catalisadores gastos de hidrotratamento em meio ácido Hydrometallurgical route to recover molybdenum, nickel, cobalt and aluminum from spent hydrotreating catalysts in acid medium

Química Nova, 2008
This work describes a hydrometallurgical route for processing spent commercial catalysts (CoMo and NiMo/Al2O3). Samples were preoxidized (500 ºC, 5 h) in order to eliminate coke and other volatile species present.
Ivam Macedo Valverde Júnior, Jéssica Frontino Paulino, Julio Carlos Afonso   +2 more
doaj   +1 more source

Processing of spent NiW/Al2O3 catalysts

Química Nova, 2013
Spent oxidized (500 ºC, 5 h) commercial NiW/Al2O3 catalysts were processed using two different routes: a) fusion with NaOH (650 ºC, 1 h), the roasted mass was leached in water; b) leaching with HCl or H2SO4 (70 ºC, 1-3 h). HCl was the best leachant.
Jéssica Frontino Paulino, Julio Carlos Afonso, José Waldemar Silva Dias da Cunha   +2 more
doaj   +1 more source

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

Metals, 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, Samu Nurmi, Ari Jokilaakso, Lassi Klemettinen, Pekka Taskinen, Justin Salminen   +5 more
doaj   +1 more source

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

Membranes, 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, Roberta Fornarelli, David Ralph   +2 more
doaj   +1 more source

Thermoacidophilic Bioleaching of Industrial Metallic Steel Waste Product

Frontiers in Microbiology, 2022
The continuous deposition of hazardous metalliferous wastes derived from industrial steelmaking processes will lead to space shortages while valuable raw metals are being depleted.
Denise Kölbl, Alma Memic, Holger Schnideritsch, Dominik Wohlmuth, Gerald Klösch, Mihaela Albu, Gerald Giester, Marek Bujdoš, Tetyana Milojevic   +8 more
doaj   +1 more source

Recovery ... reporting overview; Connecticut recovery; CT recovery ... progress

, 2011
Updated quarterly; Began in 2009.; Title from home page last modified 10/29/2009 (viewed Oct. 29, 2009).; At head of title: State of Connecticut.; "On October 1, state agencies that have received Recovery Act funds began reporting to the federal ...

core   +3 more sources

Smelting process of direct reduction iron bearing Ni and Cu to prepare Fe-Ni-Cu ternary alloy [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2019
The smelting behavior of direct reduction iron powder containing Ni and Cu from co-reduction followed by a magnetic separation of copper slag and nickel laterite was investigated in this paper.
Zhu D.-Q., Pan L.-T., Guo Z.-Q., Pan J.
doaj   +1 more source

Forensic touch DNA recovery from metal surfaces - a review [PDF]

, 2020
Trace evidence such as touch (also known as contact) DNA has probative value as a vital forensic investigative tool that can lead to the identification and apprehension of a criminal.
Higgins, D., Austin, Jeremy J, Bonsu, D., Austin, J., Bonsu, Dan Osei Mensah, Higgins, Denice   +5 more
core   +1 more source