CHemPGM MOOC – Module 1 Assessment

1.

Why is advanced characterisation essential for the recycling of spent automotive catalysts (SACs)?

To increase vehicle performance

To manufacture new vehicles

To classify SACs and select the most appropriate recycling strategy

2.

What is one of the main challenges associated with PGMs in spent automotive catalysts?

They are present in large, easily detectable particles

They are highly concentrated in a single phase

They are present at low concentrations and often as nano-sized particles

3.

Which technique is primarily used for determining the concentration of PGMs in solutions during treatment?

ICP-OES / ICP-MS

XRD

SEM-EDS

4.

How can advanced characterisation contribute to process optimisation?

By increasing the market price of PGMs

By replacing all recycling processes

By providing information on material composition and transformations

5.

What is the ultimate goal of advanced characterisation in PGM recycling?

To support efficient recovery, reuse, and sustainability of PGMs

To increase waste generation

To eliminate the need for recycling technologies entirely