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FIGURE 2-5 Tubular photobioreactors.
SOURCES: Clockwise from top left:
(a) California Polytechnic State University;
(b) Kennedy et al. (1995); and
(c) NanoVoltaix (2012). Reprinted with permission from Qiang Hu and Arizona State University/NanoVoltaix.

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FIGURE 2-6 Triangular external air-lift tubular photobioreactors.
SOURCES: Vunjak-Novakovic et al. (2005). Reprinted with permission from American Chemical Society.



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