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Full-Text Articles in Engineering

Heat Of Combustion Of Algae For Use In A Diesel Engine, Cassia Diane Davis Dec 2013

Heat Of Combustion Of Algae For Use In A Diesel Engine, Cassia Diane Davis

Masters Theses and Doctoral Dissertations

With nearly a quarter of the world’s population living without any access to electricity or modern energy, strategies for providing energy are very important. While the use of fossil fuels can bring the much needed energy to these areas they come with a host of problems. Fossil fuel use contributes to greenhouse gas emissions, air pollution and ocean acidification. In many areas fossil fuels have to be transported in. The subsequent transmission and distribution can be difficult especially in rural areas. Dependence on fossil fuels also leaves the user vulnerable to disruption in deliveries and price fluctuations. While there are …


Investigating The Feasibility Of Growing Algae For Fuel In Southern Nevada, Faegheh Moazeni May 2013

Investigating The Feasibility Of Growing Algae For Fuel In Southern Nevada, Faegheh Moazeni

UNLV Theses, Dissertations, Professional Papers, and Capstones

Microalgae capable of growing in waste are adequate to be mass-cultivated for biodiesel, avoiding fertilizers and clean water, two obstacles to sustainability of the feedstock production. This study replaces fertilizers and clean water with waste products. The investigated wastes include (1) the liquid fraction of sewage after solids and particles are removed, known as centrate, and (2) algal biomass residue, i.e. the algae remaining at the end of the lipids extraction process at biofuel plants. These wastes contain sufficient amount of nitrogen and phosphorus required for algal growth. This study proposes a system in which centrate would be used as …


Computational Fluid Dynamics Modeling Of A Gravity Settler For Algae Dewatering, Scott A. Hug Jan 2013

Computational Fluid Dynamics Modeling Of A Gravity Settler For Algae Dewatering, Scott A. Hug

ETD Archive

Algae are the future of lipid sources for biodiesel production. Algae can produce more biodiesel than soybean and canola oil and can be grown in more diverse locations. Algae concentrations are naturally around 0.1 by weight. Enough water must be removed for the algae level to reach 5 , the minimum concentration in which lipids can be used in the transesterification process for biofuel production is 5 . Current dewatering methods involve the use of settling tanks and centrifugation. The costs of centrifugation limit the commercial viability of algae based biodiesel. A novel inclined gravity settler design at Cleveland State …