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Title: Integration of Nutrient and Water Recycling for Sustainable Algal Biorefineries (Final Report)

Technical Report ·
OSTI ID:1518556
 [1];  [2];  [3]
  1. Univ. of Toledo, OH (United States)
  2. Montana State Univ., Bozeman, MT (United States)
  3. University of North Carolina, Chapel Hill, NC (United States)

This project was performed primarily as a partnership between three Universities – The University of Toledo, Montana State University and The University of North Carolina at Chapel Hill – and the industrial collaborator Clearas Water LLC. The University of Minnesota also contributed in the last year of the project. The project addressed constraints/barriers throughout the process of production of biofuels from microalgae – cultivation, harvesting and conversion processes for fuels and value-added chemicals. The most important outcomes of this project were related to (1) developing a microalgae cultivation strategy in alkaline environments to improve culture stability, decrease reliance on concentrated CO2 sources and high biofuel precursor yields; (2) fundamental understanding of microbial communities in algal/phototrophic environments to allow development of strategies for management of productive algal cultures; (3) low-cost and low-energy harvesting via temperature-sensitive hydrogels for recycling of water and unused nutrients and other media components; (4) development of conversion methods that generate high-value co-products, in addition to fuels, and also provide means for nutrient recycling; and (5) expanding the scope of current LCA/TEA models to inform potential investment in algal biorefineries.

Research Organization:
Univ. of Toledo, OH (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO)
DOE Contract Number:
EE0005993
OSTI ID:
1518556
Report Number(s):
DOE-UTOLEDO-0005993
Country of Publication:
United States
Language:
English