Techno-Economic Analysis of Biofuel Production from Macroalgae (Seaweed)
نویسندگان
چکیده
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.
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متن کاملDraft Manuscript Text 1
19 Increasing biofuel production on agricultural lands in tropical island nations will likely result 20 in increased deforestation [1], and also inflate food prices, especially in net food importing 21 countries like the Philippines [2-4]. Compounding problems associated with promotion of 22 biofuels in southeast Asian countries are the technical efficiencies of bioethanol production, 23 includ...
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