A cost-effective strategy for the bio-prospecting of mixed microalgae with high carbohydrate content: Diversity fluctuations in different growth media

Microalgae-bacteria aggregates: effect of the hydraulic retention time on the municipal wastewater treatment, biomass settleability and methane potential

“…The HRAP was inoculated with a mixture of 833 mg volatile suspended solids (VSS) L −1 microalgal biomass and 2740 mg VSS L −1 of activated sludge obtained from the aeration tank of a municipal wastewater treatment plant. The microalgal biomass was composed of a mixed microalgae collected from an aquatic environment in Queretaro State, Mexico, and propagated in Bold medium . Scenedesmus sp.…”

Evaluation of different pretreatments on organic matter solubilization and hydrogen fermentation of mixed microalgae consortia

“…It has been observed via light microscopy that the predominant species has been changed from scenedesmus and chlorella to only scenedesmus while growing in lab conditions and also using bolds mineral medium. The main reason would be the medium composition, since the bolds medium has been proved to support the growth of chlorohycae family of microalgae [2]. Besides, the color also changed from light green to dark green due the continuous light supply and sequential dark: photo period which promoted the better growth of biomass.…”

“…Besides, the color also changed from light green to dark green due the continuous light supply and sequential dark: photo period which promoted the better growth of biomass. Additionally scenedesmus has been reported as high carbohydrate accumulating microalgae and also grown easily using wastewaters and inexpensive medium conditions [2,5,8]. The pH of the medium has changed significantly (from 7.5 to 6.2) mainly due to the release of nitrogen compounds and also the biomass concentration.…”

“…TS and VS (3.2 and 1.1 to 12.2 and 6.3 g/L, respectively) were also improved due to the high growth and accumulation of biomass. Dissolved CO 2 concentration was surged from 1.24 to 0.63 ppm, since CO 2 has been utilized for the microalgae respiration as mentioned [2]. Subsequently the cultivated biomass were settled using the cone type settlers.…”

“…An efficient photobioreactor design could enhance the research niche of algal biomass to energy carriers such as H 2 , CH 4 and ethanol [6]. In a recent study, using plastic bags, conical flask and plastic bottles were investigated and proved that plastic bags are cost effective photo reactors and also suggested as efficient strategy [2]. However, during large scale operations the possibilities in the outdoor environment should be accounted.…”