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Bioengineering 2017, 4(4), 92; https://doi.org/10.3390/bioengineering4040092

Techno-Economic Analysis of Biofuel Production from Macroalgae (Seaweed)

1
Department of Biosystems Engineering, Shahid Chamran University of Ahvaz, Ahvaz 61357-8315, Iran
2
Department of Agricultural and Biosystems Engineering, Iowa State University, 3327 Elings Hall, Ames, IA 50011, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Daniel G. Bracewell
Received: 14 August 2017 / Revised: 21 November 2017 / Accepted: 22 November 2017 / Published: 26 November 2017
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Abstract

A techno-economic evaluation of bioenergy production from macroalgae was carried out in this study. Six different scenarios were examined for the production of different energy products and by-products. Seaweed was produced either via the longline method or the grid method. Final products of these scenarios were either ethanol from fermentation, or electricity from anaerobic digestion (AD). By-products were digestate for AD, and animal feed, or electricity and digestate, for the fermentation pathway. Bioenergy breakeven selling prices were investigated according to the cost components and the feedstock supply chain, while suggestions for potential optimization of costs were provided. The lowest production level of dry seaweed to meet 0.93 ($/L) for ethanol fuel and 0.07 $/kW-h for electricity was found to be 0.68 and 3.7 million tonnes (dry basis), respectively. At the moment, biofuel production from seaweed has been determined not to be economically feasible, but achieving economic production may be possible by lowering production costs and increasing the area under cultivation. View Full-Text
Keywords: techno-economic analysis; seaweed; breakeven selling price; sustainable energy techno-economic analysis; seaweed; breakeven selling price; sustainable energy
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Soleymani, M.; Rosentrater, K.A. Techno-Economic Analysis of Biofuel Production from Macroalgae (Seaweed). Bioengineering 2017, 4, 92.

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