This study quantifies the cost of cellulosic sugar production using a fully-mechanical pretreatment process and fuel pellets as a co-product. The pretreatment reduces softwood forest harvest residuals to micron-sized amorphous particles. Energy consumption is minimized using a three-stage milling process. A techno-economic analysis was completed for a milling facility with saccharification and wood pellet manufacture. For the base case, concentrated sugar syrup can be produced for $0.496/kg of sugar. Sensitivity analyses were used to determine cost controlling variables, optimize the sugar cost and found that siting for this technology needs to strongly consider electricity cost and to a lesser extent local feedstock availability. If the sugar produced in this process is used to generate biofuel and is qualified for RIN credits through a life-cycle analysis, the effective cost could be reduced by $0.04–$0.06/kg of sugar. An additional $0.067/kg savings is possible if the biofuel facility is located adjacent or on-site; the finished sugar syrup would not have to be concentrated for transportation. An optimized scenario, including the RIN credit, dilute sugar syrup, and favorable energy costs and consumption, could reduce the cost to $0.34/kg sugar compared to $0.496/kg for the base case.
A collection of publications produced during the NARA project.
Follow this link to learn more: https://nararenewables.org/publications/
A collection of webinars summarizing the research and results of converting slash to biofuel while recognizing and conducting sustainable analysis.
Follow this link to learn more: https://nararenewables.org/webinar-series/
A collection of supply chain analyses for different regions in the northwest United States.
Follow this link to learn more: https://nararenewables.org/supply-chain-analysis/
These reports are a compilation of progress reports for each aspect of the NARA project. Progress reports are grouped into one of five NARA project goals: Sustainable Biojet, Value Lignin Co-Products, Rural Economic Development, Supply Chain Coalitions, and Bioenergy Literacy.
Follow this link to learn more: https://nararenewables.org/cumulative-reports/
A collection of reports from studies conducted by members of NARA.
Follow this link to learn more: https://nararenewables.org/final-reports/
A collection of infographics and fact sheets procuded by NARA.
Follow this link to learn more: https://nararenewables.org/infographics-fact-sheets/
Listed are lesson plans designed by graduate students at the McCall Outdoor Science School (MOSS). MOSS is affiliated with the University of Idaho and contributes towards NARA’s education efforts.
Follow this link to learn more: https://nararenewables.org/education-lesson-plans/