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Techno-economic analysis of product biorefineries utilizing sugarcane lignocelluloses: Xylitol, citric acid and glutamic acid scenarios annexed to sugar mills with electricity co-production
- Özüdoğru, H.M. Raoul, Nieder-Heitmann, M., Haigh, K.F., Görgens, J.F.
- Industrial crops and products 2019 v.133 pp. 259-268
- bagasse, biobased products, biomass, biorefining, citric acid, economic feasibility, electricity, glutamic acid, harvesting, heat, lignocellulose, market prices, profitability, sugarcane, xylitol
- The profitability of biorefinery scenarios utilizing sugarcane lignocellulose (bagasse and harvesting residues), annexed to an existing sugar mill for the co-production of electricity and bioproducts was investigated. Biorefinery scenarios for xylitol, citric acid or glutamic acid production, each in combination with electricity, were simulated in Aspen Plus® to generate mass and energy balances, and perform economic analyses. The profitability was compared to a combined heat and power (CHP) plant baseline scenario that solely combusts biomass for electricity co-production. Scenario 2, citric acid and electricity co-production was not profitable at a selling price of 680 $/t citric acid. However Scenario 1, xylitol and electricity co-production, and Scenario 3 for glutamic acid and electricity co-production, both demonstrated economic feasibility with IRR’s of 12.3% and 31.5% for a selling price of 3000 $/t and 3625 $/t, respectively. These IRR values exceeded the baseline CHP plant IRR of 10.3% and hurdle rate of 9.7%.