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BACTERIAL LEACHING OF URANIUM ORE FROM FIGUEIRA-PR, BRAZIL, AT LABORATORY AND PILOT-SCALE
(Elsevier B.V., 1993-07-01)
A bacterial leaching program was carried out in order to evaluate the potential of applying this process to leach uranium from the ore of Figueira-PR, Brazil. The experiments were carried out in shake flasks, column ...
Bacterial leaching of uranium ore from Figueira-PR, Brazil, at laboratory and pilot scale
(1993-01-01)
A bacterial leaching program was carried out in order to evaluate the potential of applying this process to leach uranium from the ore of Figueira-PR, Brazil. The experiments were carried out in shake flasks, column ...
Physical and chemical transformations of gangue materials during leaching of copper sulphides, and their influence on copper leaching kinetics
(South African Institute of Mining and Metallurgy, 2017)
© The Southern African Institute of Mining and Metallurgy, 2017. This work reports preliminary results from investigations of the chemical and physical transformations of gangue materials during ferric leaching of a copper ...
Nitrate Leaching in an Argiudoll Cultivated with Sugarcane
(Springer India, 2014-09)
The aim of the study was to quantify nitrate leaching from an Aquic Argiudoll cultivated with sugarcane in Tucumán, Argentina. Two field trials were conducted during the 2010/2011 and 2011/2012 seasons with the variety LCP ...
The mechanism of 234U 238U activity ratio enhancement in karstic limestone groundwater
(Elsevier B.V., 1993-01-05)
Experimental etch/leach of Carboniferous Limestone gravels on a laboratory time-scale has demonstrated that 234U 238U activity ratios (AR's) greater than the radiochemical equilibrium value may be generated on short ...
BIOSOLIDS IN LEACHING OF HERBICIDES MIMICKING AUXIN IN TROPICAL SOILS
(Univ Federal Vicosa, 2018-01-01)
Biosolids are residues from the treatment of urban fluids used as a source of nutrients for agricultural and forestry crops. The organic matter contained in this residue and its chemical characteristics may interfere with ...
Influence of physicochemical properties of Brazilian serpentinites on the leaching process for indirect CO2 mineral carbonation
(2017-05-01)
pH-swing mineral carbonation is kinetically favorable and requires a short reaction time. It must also obtain a high extraction rate for reactive elements in the leaching process. The main purpose of this study is to ...
Extraction of niobium and tantalum from ferrocolumbite by hydrofluoric acid pressure leaching
(Elsevier Science, 2015-07)
Abstract Pressure acid leaching was used to extract niobium and tantalum from a ferrocolumbite ore. The leaching was carried out in a pressure reactor using hydrofluoric acid as leachant. Various parameters, such as ...
Stability and phosphorus leaching of tilapia feed in water
(Univ Federal Santa Maria, 2019-01-01)
The present research aimed to investigate the stability of pellets and phosphorus leaching of diets formulated for juveniles of Nile tilapia (Oreochromis niloticus), with different sources of phosphorus and different ...
Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
(2017-01-10)
This study investigated the leaching process in order to maximize Mg and Fe extraction and to produce amorphous silica (SiO2) with high purity. For this, a mining waste identified as S-GO was employed; which is a serpentinite ...