Cultivation of microalgae for biodiesel production: A review on upstream and downstream processing

Green microalgae biomolecule separations and recovery

“…As much of the literature regarding economic evaluation of microalgae production schemes has reported on biofuels, there is a consensus that high value co-products have the potential to increase the total value of microalgae biomass (t 'Lam et al 2018). While a complete microalgae biorefinery process is not yet possible, there have been production facilities attempting to integrate a biorefinery concept into their business model whereby multiple high value compounds are produced in lower volumes rather than using microalgae solely for biofuel production (Barsanti and Gualtieri 2018).…”

“…Commercially, green microalgae can be cultivated in open raceway ponds, photobioreactors, or hybrid systems. Open raceway ponds are cost-effective but prone to contamination, low biomass productivity, and low utilization of CO 2 due to constant evaporation (Tan et al 2018). The ponds are also subject to limited light penetration due to dark zones and inadequate mixing.…”

“…Photobioreactors allow for bulk quantity microalgae production, are less prone to contamination, and require less land for cultivation. Conversely, photobioreactors are much more costly, difficult to clean, and can experience a buildup of dissolved oxygen (Narala et al 2016;Tan et al 2018). Cultivation can also occur with a combination or hybrid blend of open raceway ponds and photobioreactors that can reduce cost and improve productivity.…”

“…Cultivation can also occur with a combination or hybrid blend of open raceway ponds and photobioreactors that can reduce cost and improve productivity. With hybrid cultivation strategies, a dense inoculum is produced in photobioreactors with minimized risk for contamination and then introduced in raceway ponds for continued cultivation and biomass production (Tan et al 2018). Hybrid cultivation is an interesting strategy for species that accumulate products in nutrient deficient or deplete conditions as photobioreactors can be used for vegetative growth and raceway ponds can be used for bioproduct accumulation (Narala et al 2016).…”

Cultivo de microalgas en fotobiorreactor airlift para la obtención de precursores de biodiesel

“…El aumento del pH en el medio Bayfolan es debido a que en medida que la biomasa va aumentando el pH también aumenta. (Tan et al 2017). Dado que casi siempre las referencias bibliográficas se dan los resultados en unidades de g L -1 en la Tabla 5 se muestra los datos de biomasa, de número de células y concentración de nitratos en el medio de cultivo obtenidos durante la cinética de crecimiento de C. protothecoides para los dos medios de cultivos utilizados en el experimento.…”