Nutrient balance for enhanced recovery of stressed Spirulina platensis.

The failure of mass production of Spirulina plateaus can be attributed to an imbalance of nutrients (C:N) and an increase in accumulated sodium ions, coupled with the traditional harvesting process. The current study aims at the recovery of stressed and red cultures of Spirulina platensis as well as enhanced phycocyanin accumulation. The stressed Spirulina platensis cultures were obtained from a local Egyptian Spirulina production farms, which were further subjected to water analyses after removing the Spirulina biomass.

Phenol phycoremediation by coupled with enhanced astaxanthin and lipid production under -GR24 supplementation for enhanced biodiesel production.

The present study evaluated the impact of -GR24 on biomass and astaxanthin production under phenol stress coupled with biodiesel recovery from . Phenol supplementation showed negative impact on growth, where the lowest biomass productivity of 0.027 g L day was recorded at 10 µM phenol, while 0.

Full utilization of marine microalgal hydrothermal liquefaction liquid products through a closed-loop route: towards enhanced bio-oil production and zero-waste approach.

The present study aimed to evaluate the potential of aqueous phase after hydrothermal liquefaction of microalgae (Aq-P), enriched with seawater, as a growth medium coupled with crude bio-oil production by the halophyte . Results showed that Aq-P showed higher content of total organic carbon (TOC) and total nitrogen (10.24, and 5.

Evaluation of halophilic microalgae isolated from Rabigh Red Sea coastal area for biodiesel production: Screening and biochemical studies.

In the present study, different water samples from Red Sea coastal area at Rabigh city, Saudi Arabia were studied for their dominant algal species. Microalgal isolation was carried out based on dilution method and morphologically examined using F/2 as a growth medium Dry weight and main biochemical composition (protein, carbohydrates, lipids) of all species were performed at the end of the growth, and biodiesel characteristics were estimated. sp sp sp sp sp sp sp.

Integrated approach for enhanced bio-oil recovery from disposed face masks through co-hydrothermal liquefaction with grown in wastewater.

Unlabelled: Currently, the enormous generation of contaminated disposed face masks raises many environmental concerns. The present study provides a novel route for efficient crude bio-oil production from disposed masks through co-hydrothermal liquefaction (Co-HTL) with grown in wastewater. Ultimate and proximate analysis confirmed that contains relatively high nitrogen content (9.

Valorization of lipidic food waste for enhanced biodiesel recovery through two-step conversion: A novel microalgae-integrated approach.

The present study designed an innovative route for two-step biodiesel recovery from lipidic food waste followed by microalgae cultivation. Optimization of oil conversion showed the highest fatty acid methyl esters (FAMEs) recovery of 92.6% (lipid basis).

Evaluation of high salinity adaptation for lipid bio-accumulation in the green microalga .

Aiming at the reutilizing wastewater for algal growth and biomass production, a saline water rejected from reverse osmosis (RO) facility (salinity 67.59 g L) was used to cultivate the pre-adapted green microalga . The inoculum was prepared by growing cells in modified BG-11 medium, and adaptation was performed by applying a gradual increase in salinity (56.

Combined effect of salinity and pH on lipid content and fatty acid composition of .

The haptophyte microalga was heterotrophically grown in F2 medium with different combinations of pH and salinity. Growth, oil content and fatty acids (FAs) profile were determined under each set of conditions. The salinity was adjusted using NaCl at concentrations of 0.

Improvement of Chemical Composition of Grown Mixotrophically under Nitrogen Depletion towards Biodiesel Production.

In the present study, the marine microalga was cultivated mixotrophically in F2 growth medium with sodium acetate as exogenous carbon source. The medium was composed of different concentrations of nitrogen to determine the impact of nitrogen depletion on cellular growth and chemical composition. Nitrogen depletion led to severely decreased growth and protein content.

A close-loop integrated approach for microalgae cultivation and efficient utilization of agar-free seaweed residues for enhanced biofuel recovery.

The aim of this work was to evaluate a novel integrated biorefinery route for enhanced energy recovery from seaweeds and microalgae. Agar extraction prior to anaerobic digestion recorded the highest biogas productivity of 32.57 L kg VS d.

Long-term monitoring of the biomass and production of lipids by for biodiesel production.

Pennate diatom can be cultured in outdoor vertical-bed photobioreactors to produce biodiesel. To assess the production of biomass and lipids, non-axenic cultures of were grown outdoors, and the growth of these cultures was measured biweekly. During the annual cycle of algal culture, the culture temperature ranged from 17.

Response of in Free and Alginate Immobilized Cells to Heavy Metals Toxicity.

Effects of 12 heavy metals on growth of free and alginate-immobilized cells of the alga were investigated. The tested metals ions include Al, As, Cd, Co, Cr, Cu, Hg, Se, Ni, Pb, Sr, and Zn. Toxicity values (EC) were calculated by graphical interpolation from dose-response curves.

Effects of nitrogen and phosphorus limitations on fatty acid methyl esters and fuel properties of Dunaliella salina.

This study was designed to assess the synergistic effects of nitrogen (N) and phosphorus (P) concentrations on oil content, fatty acid profile, and predicted fuel properties of Dunaliella salina. Axenic D. salina cells were grown in F/2 growth medium of salinity 34 ppt containing 33.