Fig. 2

Design of the 20-L photobioreactor for Arctic Chlamydomonas sp. KNM0029C incubation. a Blueprint of the designed photobioreactor. Components are labeled as follows: 1, filter; 2, valve; 3, 20-L polycarbonate tank; 4, LED bar; 5, air supply pump; 6, LED support panel; 7, AC/DC converter; 8, timer; 9, magnetic stirrer; 10, horizontal support structures; 11, vertical support structures; 12, pressure outlet; 13, screw cap; 14, air line; 15, sampling port; 16, air stone; 17, magnetic bar; 18, cooling water circulator (chiller); 19, copper pipe for cooling. b Design of the copper cooling pipe. c Image of the 20-L photobioreactor