“Effect of light intensity and the light: dark cycles on the long term hydrogen production of Chlamydomonas reinhardtii by batch cultures”

Biomass and pigments production in photosynthetic bacteria wastewater treatment: Effects of photoperiod

“…The average microalgae productivity increased as the light/dark cycle frequency increased (Liao et al, 2014), and a higher frequency of light/dark cycle could induce higher light-to-biomass conversion efficiency and higher biomass production. Nevertheless, Oncel and Sukan (2011) reported an opposite result that a high frequency of light/dark Considering both biomass production and COD removal, light/-dark cycle frequency of 8-48 times per day was better strategy than other two groups.…”

“…A previous study reported a different result of pigments changes in Chlamydomonas reinhardtii; the chlorophyll production increased with an increase in light/dark cycle ranging from 1.0 to 3.0 (Oncel and Sukan, 2011). Another different phenomenon was observed in a heterotrophic bacteria and eukaryotic green algal population culturing system (Lee et al, 2015).…”

Enhancement of Bio-Hydrogen Production in Chlamydomonas Reinhardtii by Immobilization and Co-Culturing

“…The lag time of 1 day before the production of hydrogen gas corresponds to the dissolved oxygen present in the culture. Hydrogen gas will only start being produced once the culture reaches a complete anaerobic stage with zero dissolved oxygen [18]. The free microalgae cell culture produced hydrogen gas for a period of about 168 hours.…”

“…In short, the regulation of the photosynthetic electron transport is an essential aspect of adjusting the cells metabolism to nutrient availability. The microalgae C. reinhardtii adapts to anaerobic photosynthetic metabolism during the loss of oxygen in order to generate ATP for the survival of the cells [18].…”

Biohydrogen production by locally isolated facultative bacterial species using the biomass of Eichhornia crassipes: effect of acid and alkali treatment

“…Hence, biological methods of H 2 production from renewable sources exhibit significant advantages as clean energy and less expensive (Ren et al 2009;Guo et al 2010;Pudukudy et al 2014;Marc and Koohi-Fayegh 2016). The established biological methods are direct biophotolysis by green algae, indirect biophotolysis by cyanobacteria, photofermentation by photosynthetic bacteria and dark fermentation by anaerobic fermentative bacteria (Das and Veziroglu 2008;Oncel and Sukan 2011;Show et al 2012;Hay et al 2013).…”