Helical tubular photobioreactor

Photosynthetic CO2 fixation performance by a helical tubular photobioreactor incorporating Chlorella sp. under outdoor culture conditions... 

Figure 1. A schematic diagram of the cone-shaped helical tubular photobioreactor (HTP) system with 1.1 m installation area for outdoor culture experiment.

Table 1. Maximum daily growth yield and photosynthetic efficiency of CWoreWa sp. strain HA-1 in the cone-shaped helical tubular photobioreactor under field culture operation. ...

Figure 3. Changes in light intensity(A) and temperatures of ambient,culture broth and heat exchanger water in the water bath(B) in the cone-shaped helical tubular photobioreactor outdoor culture experiment (Data of 1996.7.19.)...

BRIASSOULIS D, PANAGAKIS P, CHIONIDIS M, TZENOS D, LALOS A, TSINOS C, BERBERIDIS K and JACOBSEN a (2010) An experimental helical-tubular photobioreactor for continuous production of Nannochloropsis sp. Bioresource Technology, 101,... 

This study demonstrates the principal possibility of hydrogen production in an outdoor photobioreactor (PhBR) incorporating a cyanobacterial mutant of Anabaena variabilis (PK84) under aerobic conditions. A computer-controlled helical tubular PhBR was operated over 4 summer months. A maximum rate of 80 mL H2 per hr per reactor volume (4.35 L) was obtained on a bright day (400 W m 2) from a batch culture. Also the culture was grown in chemostat mode at dilution rate D of 0.02 h 1. The maximum efficiency of conversion of light to chemical energy of H2 in the PhBR was 0.33% and 0.14% on a cloudy and a sunny day, respectively. 

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