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Microalgae Cultivation for Simultaneous Treatment of Municipal Wastewater and Biofuel Feedstock Production
, M.Sc. Thesis Sharif University of Technology ; Vossoughi, Manoochehr (Supervisor) ; Kariminia, Hamid Reza (Supervisor)
Abstract
Depletion of fossil fuels and their price increase, world is going to face critical energy challenges in the near future. Thereforefinding proper replacements for fossil fuels is inevitable. On the other hand, releasing of huge amount of wastewater into environment imposes serious nvironmental threats. Microalgae can be a potential alternative for biological wastewater treatment as well as fuel production. Microalgae grown in wastewater can eliminate remaining nitrogen and phosphorous. The gorwn biomass can be used for biofuel production afterward. Microalgae can also decrease the amount of greenhouse gas through the consumption of CO2 as energy sources. In this study, nutrient removal from...
Experimental and Theoretical Study of the Lipid Extraction from Wet Microalgae for Biodiesel Production
, M.Sc. Thesis Sharif University of Technology ; Rashtchian, Davood (Supervisor) ; Vossoughi, Manoochehr (Supervisor)
Abstract
In this study, different stages of biodiesel production from microalgae were investigated, specifically the extraction step.Various cultivation methods were also studied among which cultivation under stress was the best. Different carbon sources were also investigated to achieve highest growth. Sodium acetate with complete growth was achieved after 8 days with 6.22% fatty acid recovery. Different mixtures of solvents were compared with Blye and Dier method. Results showed that the mixture of hexane and methanol with crude lipid extraction of 15% and fatty acid recovery of 3.97% were chosen as the solvent mixture of equilibria experiments.Organic solvent composed of hexane (non-polar...