Distilled some lemon oil tonight for the limonene responsible for the wonderful citrus smell. Edited and annotated the entire process, so have a look!
https://www.youtube.com/watch?v=q1xWF_6flYM&t=4s
Limonene is the molecule in lemons and oranges responsible for the sweet citrus fragrances of these fruits. In this video, a simple distillation is conducted to separate essential oil containing Limonene for further use.
Joshua Wilson 