Results 71 to 80 of about 1,164,984 (151)

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  

Water as a Sustainable Leaching Agent for the Selective Leaching of Lithium from Spent Lithium-Ion Batteries

ACS Omega
The development of a sustainable recycling process for lithium from spent lithium-ion batteries is an essential step to reduce the environmental impact of batteries. So far, the industrial implementation of a recycling process for lithium has been hindered by low recycling efficiencies and impurities in the recycled material.
Rafaela Greil, Joevy Chai, Georg Rudelstorfer, Stefan Mitsche, Susanne Lux   +4 more
openaire   +3 more sources

Selective Recovery of Metallic Zinc from Zinc Leaching Residue by Calcification Roasting and Acid Leaching

Materials
It is essential to recycle zinc leaching residue (ZLR) generated by the conventional zinc hydrometallurgy process, as it is a hazardous and potentially valuable industrial waste. A combined calcification roasting–acid leaching process was developed to selectively separate and recover zinc from ZLR.
Wang, Zhenqi, Ge, Hui, Xie, Feng, Wu, Shaohua, Wei, Wang   +4 more
openaire   +2 more sources

Leaching of Copper Shaft Furnace Dust Using Deep Eutectic Solvents (DESs)

Metals
This study investigates the hydrometallurgical recovery of valuable metals from copper shaft furnace dust (SFD), a complex industrial waste containing approximately 40 wt.% Zn, 16 wt.% Pb, and 1 wt.% Cu.
Martina Laubertová, Michaela Ružičková, Martin Sisol, Cinta Barba Brioso, Joaquín Delgado Rodríguez   +4 more
doaj   +1 more source

Comparison of Butyric Acid Leaching Behaviors of Zinc from Three Basic Oxygen Steelmaking Filter Cakes

Metals, 2019
The selective leaching of zinc from three different basic oxygen steelmaking (BOS) filter cakes by butyric acid was investigated to compare the leaching behaviors of zinc and further to establish the correlation of the zinc leaching performances and the ...
Jingxiu Wang, Zhe Wang, Zhongzhi Zhang, Guangqing Zhang   +3 more
doaj   +1 more source

Selective Lithium Pre-Leaching from Pyrolyzed Industrial Lithium-Ion Battery Black Masses Using Dilute Organic and Inorganic Acids

Metals
Selective lithium pre-leaching can separate an accessible lithium fraction before complete black-mass dissolution while limiting the co-dissolution of accompanying elements.
Eva Gerold, Manuel Schmid, Helmut Antrekowitsch   +2 more
doaj   +1 more source

Leaching of rare earth elements from heavy mineral sand tailings using chemical and bioleaching

Chemical Engineering Journal. Green and Sustainable
The tailings from heavy mineral sand processing, typically generated after the primary extraction of ilmenite, rutile, and zircon, represent a promising secondary resource of rare earth elements (REEs).
Phong H.N. Vo, Soroosh Danaee, Unnikrishnan Kuzhiumparambil, Mathieu Pernice, Thanh Hai Pham, Marjan Ansari Dezful, Simon M. Clark, Vladimir Strezov, Ai Nguyen, Peter J. Ralph   +9 more
doaj   +1 more source

THE STUDY ON OPTIMIZATION OF COPPER LEACHING FROM WASTE PCBs BY USING RESPONSE SURFACE METHODOLOGY [PDF]

, 2018
Recycling printed circuit boards (PCBs) is an important solution not only to treat hazardous waste but also to recover valuable materials. This research focus on optimizing the leaching copper process from waste PCBs to recycle.
Ngoc Mai, Tran Thi
core   +1 more source

The anodic dissolution of covellite in acidic, chloride solutions [PDF]

, 2010
An electrochemical study was conducted on a stationary, synthetically produced, covellite electrode in acidic, chloride solutions at ambient conditions to investigate the dissolution behaviour of the mineral over a surface potential range from the open ...
Basson, Petrus
core   +1 more source