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Environment Enhancing Energy --The Analysis of Carbon Capture, Nutrient Reuse and Energy Production of a Novel Wastewater Treatment System that Incorporates Large Scale Algal Biofuel Production

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Abstract:

A novel system, “Environment-Enhancing Energy” (E2-Energy), for algal biofuel production is proposed that integrates algal biomass production during wastewater treatment and hydrothermal liquefaction of that biomass into bio-crude oil. This novel system resolves several key bottlenecks for large-scale algal biofuel production including the contamination of target high-oil algal cultures, high nutrient cost inputs, as well as the significant energy inputs for dewatering/extraction. This approach could ultimately replace petroleum imports using only waste inputs and carbon dioxide from the atmosphere. A series of algae cultivation and hydrothermal liquefaction experiments have been conducted to confirm several key characteristics of this novel system and have been presented previously (WEFTEC 2011). In this study, a mathematical model for E2-Energy was also developed using the STELLA modeling tool in order to simulate the continuous operation of E2-Energy system and the result showed that this process effectively leverages the waste nutrients for maximum biomass production and carbon capture, and the biomass produced could be up to 8 times of the original mass of biosolids in the wastewater, and could ultimately replace petroleum imports using only waste inputs and carbon dioxide from the atmosphere.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864712811727111

Publication date: January 1, 2012

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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