Fig. 2From: Immobilization techniques improve volumetric hydrogen productivity of Caldicellulosiruptor species in a modified continuous stirred tank reactorVolumetric hydrogen productivity (QH2) and substrate consumption rate of pure culture of C. owensensis. QH2, bar graph (mmol L−1 h−1) and substrate consumption rate, line graph (mmol L−1 h−1). Case F (with acrylic fibres, vertical line, open square); Case G (with acrylic fibres and chitosan, diagonal line, open diamond); and Case H (with chitosan, brick, open triangle)Back to article page