Platinum Recovery from Laboratory Chemical Waste (pt 1)

In this video we recover platinum from platinum containing laboratory chemical waste.

This is a bit different from recovering platinum in more common items like catalytic converters and jewellery because in laboratory waste the platinum is sometimes protected by extremely resilient ligands in organometallic complexes. Therefore we have to process the waste first and remove the organics before we can start on the platinum.

To do that we first remove all the volatile compounds, mostly organics solvents, by a successive series of boiling and heating to higher temperatures. Finally we incinerate (or "ignite" as chemists say) the resulting dry waste to actually destroy the organic complexes. We use a torch to get it red hot and keep going until no more fumes or smoke appear. Then we wash the ash several times in boiling water and filter. The resulting powder now contains platinum and other metals and metal oxides.

In the next part of this series we'll actually refine the platinum from the other metals.

Related videos:
Make chloroplatinic acid: https://www.youtube.com/watch?v=MlMj3VEYBMA

Chemical resistance of platinum: https://www.youtube.com/watch?v=fro-L5gSyh4

Make a high temperature heating mantle: https://www.youtube.com/watch?v=N5meDWAqYes

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