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Indian Institute of Technology (IIT) Roorkee 
A novel bio reactor system for solid state fermentation and process of operation thereof 
Sanjoy Ghosh, Richa Rani and Sidharth Arora 
Indian Institute of Technology (IIT) Roorkee 
Application type:
Applied - 2016-06-11 
Application Number:
Applied at:
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Indian Institute of Technology (IIT) Roorkee 
A novel bioreactor system for solid-state fermentation and a process of operation thereof is proposed in the invention. The bioreactor system comprises of a plurality of vertically stacked cylindrical modules around a central pipe. The central pipe facilitates the supply of conditioned air to the modules, and also acts as a central shaft for mixing purpose, whereupon, a variable speed motor is fitted. Each module further comprises a lower chamber facilitating the entry of steam or conditioned air, a perforated disc between the upper and lower chamber, substrate bed in the upper chamber, one rotating plate at the top of upper chamber fitted with mixing blades, a plurality of spray nozzles for intermittent addition of fluids and a variable diameter exhaust vent. Bioreactor also comprises of an exhaust processing system which facilitates on-line monitoring of process parameters. The bioreactor claims to operate at a high substrate bed loading (59.2%, v/v) and performs all the fermentation operations in a highly aseptic fashion. 

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