Fermentor/Research Development

Fermentor design

| Dialysis Fermentor Systems for Concentrated Culture of Microorganisms by Gallup and Gerhardt (1963) describes a fermentor connected to a dialysis unit that allowed extremely high cell density and other favorable features. The semipermeable membrane was made of regenerated cellulose and held taut in a frame in a separate chamber.. Feeding could be conducted by exchange at the membrane. Extremely high cell density was achieved with the Serratia marcescens culture. When a reservoir chamber was used to with dialysis tubing a second phase to the growth phase was introduced. Addition of polyethylene glycol can drive the water from a culture and cause them to flocculate (and can clog a machine).

Blogged fermentor builds

http://benkrasnow.blogspot.com/2009/09/stainless-steel-conical-beer-fermentor.html http://hbd.org/brewniversity/engineering/conical/ http://nilrodbrewery.blogspot.com/2010/12/diy-inductor-tank-conical-fermenter.html