Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Algal biofuels"”.
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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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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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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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Uncertainty in synthetic biology for release and possibilities for regulation under the Toxic Substances Control Act
… setting standards. Examination of the emerging algal biofuels industry as a case study suggests that concepts of industry-favored regulation may be useful to the EPA for fashioning strong regulations that would promote real health and environmental wellbeing.
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Environmental and economic evaluation of algal-based biofuels through geographically resolved process and sustainability modeling
Advanced algal renewable fuels have been the subject of extensive research during the last decades. Their advantages over conventional biofuel feedstocks position algal biomass as a promising feedstock for the development of a sustainable and circular bioeconomy. Despite recent technological …
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Sustainability implications of carbon delivery in microalgae cultivation for the production of biofuel
… delivery methods of carbon to a production-scale algal biorefinery. Five primary carbon sources were considered: atmospheric CO2; CO2 from direct chemical or power plant waste emissions; CO2 that has been concentrated from waste sources and compressed; inorganic carbon in the form of sodium …
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Rapid Harvest of Algae for Biofuel Production with the Aggregating Bacterium Bacillus sp. strain RP1137.
Algal biofuels represent one of the most promising means of sustainably replacing liquid fuels. However significant challenges remain before algal based fuels become competitive with fossil fuels. One of the largest challenges is the ability to harvest the algae in an economic and low energy …
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Water and Nutrient Recycling in High Rate Algae Ponds Fed in Primary Treated Municipal Wastewater
<p>Algal biofuels present a promising future alternative to petroleum based fuels. Water nutrient recycling is a key step to increase the sustainability of algae biofuel production facilities. This thesis discusses the process of nutrient and water recycling in high rate algae raceway ponds (HRAP) …
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Optimization of Growth Parameters for Algal Regrowth Potential Experiments
… cost is one of the key deterrents in making algal biofuels a feasible alternative to traditional petroleum fuels. Research into recycling of algal media was conducted in a laboratory setting at the California Polytechnic State University in San Luis Obispo. A growth assay was created to allow …
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Life cycle assessment of dewatering routes for algae-derived biodiesel processes
Biodiesel derived from algae is considered a sustainable fuel, but proper downstream processing is necessary to minimize the environmental footprint of this process. Algae is grown in dilute liquid cultures, and achieving the low water contents required for extraction represents one of the greatest …
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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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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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Biofuels from Liquefaction of Marine Microalgae: Production, Upgrading, and Environmental Impacts
Algal biomass is an attractive source for liquid fuel production as it grows rapidly even in adverse conditions, and fixes carbon dioxide from the atmosphere by photosynthesis. Hydrothermal liquefaction (HTL) of microalgae is a promising conversion technology in which algal biomass is treated as an …
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Single droplet combustion of alternative fuels
… fuels is becoming increasingly important. Biofuels, such as biodiesel and ethanol, are already used in the transportation sector. Rising biodiesel production generates byproducts like glycerol and surplus alcohols, which are also candidates for combustion applications. This study explores …