Patent ID: 7824904

Claim:
A photobioreactor comprising: A) a tank for containing a liquid microbial culture; B) a rotating sunlight-propagating system comprising: (1) a rotating system comprising: one or more motors with one or more shafts connected to and driven by said motors; (2) a sunlight-propagating system comprising: (a) sunlight as a source of light; (b) one or more light-transparent pipes, tubing, which have a closed end to prevent penetration of the culture inside the pipes and tubing, connected to the shafts and driven by motors; wherein said sunlight propagates through all and any lengths of the light-transparent pipes, tubing and therefore can reach any spot of the photobioreactor; and sunlight from the inside of the pipes propagates through the light-transparent wall and the end surfaces of the pipes through all thicknesses of the microbial culture; (c) a conduit that transfers sunlight to light-transparent pipes, tubing; and said motor or motors rotate the sunlight-propagating system through the entire microbial culture with a speed which allows distribution of sunlight to all cells of the microbial culture throughout the entire volume of the tank in amounts which will provide optimum growth.