2. Separation methods – 2.3 Activated carbon purifying drinking water (teacher instructions)

Bild: 2. Separation methods – 2.3 Activated carbon purifying drinking water (teacher instructions)
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© Siemens Stiftung 2019 (CC BY-SA 4.0 international)
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Dieter Arnold
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Siemens Stiftung
Experimentation instructions: Background information on the content and practical information on conducting the “Activated carbon purifying drinking water" experiment.
The students will learn that dyes, flavourings, fragrances and bacteria cannot be eliminated from drinking water by simple filtering techniques.
This can be done only with certain materials which have a very large surface area where they can bind (adsorb) the unwanted substances.
Water is absorbed by kitchen paper; dust is adsorbed on a plastic surface.
One item deals with „Technical application and vocational orientation“.

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