Factors Affecting Solvent Performance in Metal Extraction

Questions and Answers

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

Concentration of the metal in the solid matrix

Type of solvent used

Temperature of the extraction process

Mass transfer of material from the solid into the bulk of the solvents (correct)

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

Surface tension (correct)

Density

Diffusivity

Viscosity

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

High cost

Low yield (correct)

High viscosity

Low selectivity

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

To decrease the viscosity of the solvent Signup and view all the answers

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

Increase in the yield of rhodium and decrease in the extraction period Signup and view all the answers

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

To determine the effect of CO2 on the viscosity of DES Signup and view all the answers

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

Increase in the yield of rhodium and decrease in the extraction period Signup and view all the answers

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

They are involved in the intermolecular interactions that affect viscosity Signup and view all the answers

Study Notes

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.

Description

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.