Where can I find some simple experiments that demonstrate green chemistry? I'm looking for experiments that can be used either hands-on with students performing them or as a demonstration for beginning chemistry classes.
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The GEMS site at the University of Oregon has a searchable database of green chemistry material, including lab procedures that you can download. They range from Primary School level through College level. |
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Making biodiesel from used fry oil is an easy green experiment we used to do at school. It is quite simple once you got the amount of lye correct ;-) |
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There are 12 principles for green chemistry. I have a way for #6: design for energy efficiency. If you are interested in it, I can elabrate it. |
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This video from Benchfly shows how to extract limonene from supercritical CO2. All you need is a sealed tube, dry ice, orange peel, and a beaker of warm water. |
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I must take issue here, in my opinion there is no such thing as "green chemistry". You still require energy, still need to dispose of waste material. Ionic liquids are always quoted as being green, but they are not. Biodiesel, ethanol instead of petrol, you still get CO2 and water when they burn, not green. What we can do as chemists is limit the emissions and waste products by designing more efficient processes. Use less fancy reagents for our chemistry, why use TMSdiazomethane for the preparation of a methyl ester when methanol/H2SO4 is better, and so on. I wonder what replies this will generate:)) |
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