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Indian Institute of Technology (IIT) Roorkee 
Hybrid biofilm-suspended photobioreactor for high-density algae cultivation 
Sanjeev Kumar Prajapati and Mohit Singh Rana 
Indian Institute of Technology (IIT) Roorkee 
Application type:
Provisional - 2020-07-06 
Application Number:
Applied at:
Entered by:
Indian Institute of Technology (IIT) Roorkee 
The present invention relates to a hybrid biofilm-suspended photobioreactor for high-density algae cultivation. The transparent dome-shaped photobioreactor consists of regularly spaced baffles inside the reactor. The baffles are composed of non-woven fabric material and equipped vertically availing riser and downcomer zone inside the PBR. A provision for air/CO2 gas mixer inlet is provided in the riser zone at the bottom of the reactor. The gas outlet section is designed at the top of the reactor. Further, conical-shaped passive plastic light pipes are intruded, keeping a little portion above the dome surface. Additionally, iron nanoparticle assisted nutritional support is provided. 

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