Factors Affecting Solvent Performance in Metal Extraction

What is the primary factor that influences the performance of solvents in the extraction of metals from their solid matrices?

Which of the following physical properties does not affect mass transfer?

What is the primary limitation of DES in the extraction of rhodium?

What is the purpose of introducing a third component, such as a water molecule, into DES?

What is the expected outcome of reducing the viscosity of DES during extraction?

What is the primary goal of the experiment described in the text?

What is the potential benefit of introducing CO2 into DES mixtures?

What is the role of HBD and HBA molecules in DES?

Factors Influencing Solvent Performance in Metal Extraction

Mass transfer of material from solid matrices into solvents is a crucial factor in metal extraction.
Mass transfer is influenced by physical properties such as density, viscosity, and diffusivity, as well as parameters like temperature.
Adjusting these factors can improve the selectivity and yield of targeted metal species.

DES as Solvents in Metal Extraction

Deep Eutectic Solvents (DES) have been shown to be effective in extracting precious metals like platinum and palladium from secondary sources.
DES have a low yield for rhodium extraction.
DES are known for their high viscosity, which can be a limiting factor in extraction.

Modifying DES to Improve Viscosity

Introducing a third component, such as a water molecule, into DES can disrupt intermolecular interactions and influence viscosity.
Reducing the viscosity of DES during extraction may increase the yield of rhodium and decrease the extraction period due to increased diffusivity.

Research Objective

The aim of this study is to determine whether the introduction of a CO2 molecule in a mixture of DES, with or without a water component, can decrease the viscosity of these mixtures.

Explore the physical properties and parameters that influence mass transfer in metal extraction, and learn how adjusting these factors can impact selectivity and yield. Discover the effectiveness of Deep Eutectic Solvents (DES) in this process.