This summer, I plan to try to make some Biodiesel. First will be the quick/standard vegitable-oil extraction (which is super easy), but what I really want to get into is algae.

What I'll need to figure out is how to extract oil from algae. There have been methods for doing this since 1879, but I'm not sure if solvent-based extractions will really work. It's kinda expensive, dirty, and really aimed at small batches.

I have yet to find any information on larger-scale extraction, but I'll keep looking. Maybe I could build a centrifuge...