Aspirin and sewage treatment plant: what they have in common

1. Step 1. Aspirin — uses — Chemical reaction. It is synthesized by acetylating salicylic acid.
2. Step 2. Chemical reaction — includes — Fermentation. A biochemical reaction.
3. Step 3. Fermentation — is used in — Sewage treatment plant. Activated sludge is microbes.

Open Evothings