A biodigester is a large vessel made from stainless steel used to produce large quantities of a certain chemical, usually the product of a particular microbe.
The process of producing penicillin:
Culture placed in fermenter: to allow fungus to reproduce
Collect batch and filter: to remove solid material
Collect filtered liquid: it contains penicillin
Penicillin crystallised: penicillin concentrated
Put into capsules: medicine ready for use.
Parts of a biodigester
- stirrer: mixes microbes, nutrients and oxygen
- cold water jacket
- control centre: for monitoring conditions and sensor
- product collected through oulet then purified
- paddle wheel