Global ETD Search
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Showing 1 to 13 of 13 for “"algal biofuel"”.
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The co-cultivation of rice and algae to improve process economics for algal biofuel production
… increasing the production of fuels from algae. Algal biofuels are currently limited by high costs for land, cultivation ponds, nutrients, and labor resulting in a total cost of 10.9 dollars/gallon of gasoline equivalent (gge-1) according to Lundquist et al., (2010). These can be mitigated by …
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Adsorbent-based algal cultivation system to facilitate integration of algal biofuel production with wastewater treatment
… as a promising pathway for sustainable biofuels, there are still several challenges that limit the ability to use algae for biological wastewater treatment. First, the treatment performance of an algal wastewater system is less stable than current systems using aerobic heterotrophic …
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Improving algal biofuel production through nutrient recycling and characterization of photosynthetic anomalies in mutant algae species
… challenges remain to be solved for scaling-up of algal biofuel production. This dissertation has examined two innovative approaches to improve algal biofuel production: (1) an integrated waste to algae biofuel production process that recycles wastewater nutrients into multiple cycles of algal …
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Carbon dioxide transfer through hollow fiber membranes
… the biomass growth rate in a photobioreactor for algal biofuel production. The membrane modules were operated in a sealed-end, parallel flow configuration. Several modules were constructed that ranged in interfacial surface area from 466 to 1397 m2/m3. The mass transfer coefficients were …
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Potentiating Algae, Modernizing Bioeconomies: Algal Biofuels, Bioenergy Economies, and Built Ecologies in the United States and Turkey
… potentiate algae as alternative sustainable biofuels in the wake of the global food versus fuel debate of the late 2000s. I draw on two years of multi-sited ethnographic research conducted in the United States and Turkey to document why, how, and to what end do algal biofuel advocates figure …
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Potential for biofuel production from algae based wastewater treatment in California: Can algal biofuels be cost-competitive with traditional petroleum based diesel?
… on their own. By combining these two processes, algal-based wastewater treatment with algal biofuel production, additional benefits can be derived, among which could be a cost-savings. In California the average estimated base production cost per gallon for algal biodiesel is $5.98/gallon. …
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Hydrothermal processing of high-lipid biomass to fuels
High-lipid algae are potential sources of biofuels. Lipids in this biomass provide a straightforward chemical route to hydrocarbon-based high energy-density fuels needed for diesel and jet engines. However, current schemes for producing these biofuels require large amounts of energy and solvents to …
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Lipid Productivity of Algae Grown on Dairy Wastewater as a Possible Feedstock for Biodiesel
… wastewater treatment system that utilizes algal growth to simultaneously create renewable energy in the form of biodiesel and digester biogas, remove polluting nutrients, and abate greenhouse gases. Research under the Department of Energy Aquatic Species Program during 1978-1996 concluded …
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Improving integrated systems for algal biofuels and wastewater treatment
… integration of wastewater treatment and algal biofuel production. In particular, we proposed and then analyzed the impacts of a novel integrated system that treats wastewater and maximizes the beneficial reuse of wastewater nutrients and organics to produce bio-crude oil. Centered around …
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Growth Media and Lipid Determination Comparison of High Rate Algae Ponds
… Alexander Nicolai</p> <p>The feasibility of algal biofuel production relies on the use of a non-potable water source. Municipal wastewater is nutrient-rich and a cost effective option as a growth media in algae ponds. However, this resource may be too valuable for algal biomass production, as …
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Wastewater treatment high rate algal pond (WWT HRAP) biomass for low-cost liquid biofuel production
Currently despite intense efforts algal biofuel production is still not economically competitive with fossil fuel. To lower algal biofuel production costs, replacement of pure algal biomass with free gravity-harvested algal-bacterial biomass produced in wastewater treatment high rate algal ponds …
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Investigation of the closed loop processing systems developed for microalgal biofuels
The algal biofuels industry is under development and being investigated at large scale all around the world. To improve the viability of algal biofuels the ability to use closed loop systems that recycle waste and water thereby decreasing the overall waste produced while increasing profitability is …
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Mechanical algal disruption for efficient biodiesel extraction
… microbubbles to improve mechanical disruption of algal cells using experimental, theoretical, and computational methods. New laboratory experiments show that effective ultrasonic disruption of algae is achieved by adding microbubbles to an algal solution. The configuration studied flows the …