Biodiesel and biohydrogen production from cotton-seed cake in a biorefinery concept

Production and characterization of biodiesel derived from Hodgsonia macrocarpa seed oil

“…HM seed oil content observed in this work was 71.65 wt%, which is higher than that of other potential oilseeds such as cotton-seed cake (11 wt%) [24], Forsythia suspense (30.08 wt%) [25], Xylocarpus moluccensis (10.21 wt%) [26], Calotropis gigantea (25 wt%) [27], and Jatropha curcas (54.08 wt%) [28]. The very low acid value (1.12 mg KOH g À1 ) of the HM seed oil enabled direct base-catalyzed transesterification for biodiesel production without pretreatment.…”

Lignocellulose biohydrogen: Practical challenges and recent progress

“…The hydrogen production strategy represented by CBP is related to the idea of biorefinery, purposing the complete and environmental benign conversion and stabilization of the total biomass input [91,92] and contributing to a higher valorization of the residues. For example, considering the biorefinery concept, the effluent of hydrogen fermentation -being rich in high energy content organic substances -may be fed to complementary procedures such as anaerobic digestion to obtain biomethane [93,94], bioelectrochemical systems [95] e.g.…”

Conversion of residues and by-products from the biodiesel industry into value-added products

“…The highest specific bio-hydrogen yield (68.2 mL H 2 /g VS) was achieved using 2.5 g VS of untreated jatropha seed cake; however, the largest cumulative concentration was achieved with 10 g VS (Lopes et al 2015). Likewise, Panagiotopoulos et al (2013) evaluated dark fermentation of cotton-seed cake. Caldicellulosiruptor saccharolyticus produced significantly higher hydrogen yield (84-112 %) than the control.…”

“…Caldicellulosiruptor saccharolyticus produced significantly higher hydrogen yield (84-112 %) than the control. However, hydrogen was only generated when the cotton-seed cake was pretreated with NaOH (10 %) (Panagiotopoulos et al 2013). In a different approach, seed cakes have been used in solid-state fermentation to produce edible fungus and enzymes (Veerabhadrappa et al 2014;da Luz et al 2013).…”