Microalgae are a valuable source of lipid feedstocks for biodiesel and valuable omega-3 fatty acids. Nannochloropsis gaditana has emerged as a promising producer of eicosapentaenoic acid (EPA) due to its fast growth rate and high EPA content. In the present study, the fatty acid profile of Nannochloropsis gaditana was found to be naturally high in EPA and devoid of docosahexaenoic acid (DHA), t...

Abstract One of the biggest challenges in implementing microalgae-based biofuels is effective harvesting process. Filtration membrane has become one flexible methods microalgae harvesting. This study investigated Nannochloropsis sp. using a modified PVDF at various LiCl as an additive with N-methyl-2-pyrrolidone (NMP) solvent. Harvesting never been reported before. The addition can improve perf...

Hatchery production is critical to the successful aquaculture of a species. This study describes first captive breeding and reports on embryonic development early larval stages sea cucumber Holothuria sanctori, species native Mediterranean eastern Atlantic. Various induction methods were applied obtain spawning in adult H. sanctori specimens; gametes obtained from spontaneous event broodstock i...

We investigated hydrothermal liquefaction of Nannochloropsis sp. at different temperatures (250e400 C), times (10e90 min), water densities (0.3e0.5 g/mL), and biomass loadings (5 e35 wt %). Liquefaction produced a biocrude with light and heavy fractions, along with gaseous, aqueous, and solid by-product fractions. The gravimetric yields of the product fractions from experiments at 250 C summed ...

In this paper subcritical co-solvents extraction (SCE) of algal lipid from wet pastes of Nannochloropsis sp. is examined. The influences of five operating parameters including the ratio between ethanol to hexane, the ratio of mixed solvents to algal biomass (dry weight), extraction temperature, pressure, and time were investigated. The determined optimum extraction conditions were 3:1 (hexane t...

A matrix of photobioreactors integrated with metabolic sensors was used to examine the combined impact of light and temperature variations on the growth and physiology of the biofuel candidate microalgal species Nannochloropsis oculata. The experiments were performed with algal cultures maintained at a constant 20 °C versus a 15 °C to 25 °C diel temperature cycle, where light intensity also fol...

Four species of microalgae were evaluated at different temperatures for their ability to remove ammonia from intensive marine fish/shrimp culture systems. Growth rates were highest on the first of three days of culturing for marine microalgae Nannochloropsis oculata, Isochrysis aff. galbana, Chaetoceros muelleri, and Tetraselmis chui. This rate was used to compare both the growth and the total ...