Difference between revisions of "Solid state fermentation"

A rotating drum bioreactor is a horizontal cylinder. The drum is semi-filled with a bed of substrate. The fermented bed cannot be too high and this creates good oxygen and carbon dioxide transfer. Temperature control also depends on the mixing effect on the solid substrate.

Typically, fluidized-bed reactors are constructed from a verticalc chamber with a perforated base plate. Forced aeration is applied at the bottom chamber at sufficient speed to fluidize the solid substrate particles and cause mixing. Also, the bioreactor has an agitator, breaking up agglomerates that can form and settle to the bottom. The bed expands and so enough headspace is needed. The mixture of solid particles and gas will behave like a liquid. The fluidized-bed bioreactor provides a good mixing behavior of gas, solid and liquids.