Extraction of copper from bacterial leach liquor of a low grade chalcopyrite test heap using LIX 984N-C

Impact of solvent extraction organics on adsorption and bioleaching of A. ferrooxidans and L. ferriphilum

“…LIX984N was made up by hydrophilic polar groups and lipophilic nonpolar group [9], which was a surfactant and could adsorb on minerals surface to enhance the hydrophobic. On the other hand, the cytomembrane of gram-positive bacterias contains some proteins and lipids, which were related to the adsorption on minerals [10]. Many studies have indicated that the bacterial trend to adsorb on the hydrophobicity surface [11], and it was certified again in Figure 1.…”

Microbe–Mineral Interactions: Exploring Avenues Towards Development of a Sustainable Microbial Technology for Coal Beneficiation

“…Such microorganisms utilize the iron source of pyrite for their growth and metabolism and are frequently used in bioleaching (Sand et al 2001;Ciftci and Akcil 2010). The iron oxidizer Acidithiobacillus ferrooxidans (A. ferrooxidans) is considered to be the industrially important microorganism (Panda et al 2012a;Pradhan et al 2008). It is very important to note that A. ferrooxidans act as both an iron and sulfur oxidizer (under aerobic condition) and reducer under anaerobic conditions (Osorio et al 2013).…”

Investigation of Copper Extraction from Aqueous Sulfate Solution in a Rotating Disc Contactor

“…1,2 Compared to pyrometalurgical method this approach has not disadvantages such as several drawbacks, including high energy consumption and the production of hazardous gases. 3 Solvent extraction (SX) has been recognized as one of the most important process due to economically and environmentally beneficial to recover various metals from leaching solutions and other waste streams for many decades.…”

“…11 Literature review indicates that hydroxyoximes are now used widely as extractants for copper SX in hydrometallurgy marketed as LIX (Cognis), Acorga (ICI) or SME (Shell) reagents. [2][3][4][5][11][12][13][14][15] In recent years, D 2 EHPA and various sulfur containing reagents such as CYANEX group have received considerable attention both for their ability to extract soft transition metal ions. 8,12,16 Over the years different types of solvent extraction contactors have been developed for use in the minerals processing industry.…”