| ID | 101412 |
| Title Proper | Comparative analysis for power generation and ethanol production from sugarcane residual biomass in Brazil |
| Language | ENG |
| Author | Seabra, Joaquim E A ; Macedo, Isaias C |
| Publication | 2011. |
| Summary / Abstract (Note) | This work compares the technical, economic and environmental (GHG emissions mitigation) performance of power generation and ethanol production from sugarcane residual biomass, considering conversion plants adjacent to a sugarcane mill in Brazil. Systems performances were simulated for a projected enzymatic saccharification co-fermentation plant (Ethanol option) and for a commercial steam-Rankine power plant (Electricity option). Surplus bagasse from the mill would be used as fuel/raw material for conversion, while cane trash collected from the field would be used as supplementary fuel at the mill. For the Electricity option, the sugarcane biorefinery (mill+adjacent plant) would produce 91 L of ethanol per tonne of cane and export 130 kWh/t of cane, while for the Ethanol option the total ethanol production would be 124 L/t of cane with an electricity surplus of 50 kWh/t cane. The return on investment (ROI) related to the biochemical conversion route was 15.9%, compared with 23.2% for the power plant, for the conditions in Brazil. Considering the GHG emissions mitigation, the environmentally preferred option is the biochemical conversion route: the net avoided emissions associated to the adjacent plants are estimated to be 493 and 781 kgCO2eq/t of dry bagasse for the Electricity and Ethanol options, respectively. |
| `In' analytical Note | Energy Policy Vol. 39, No. 1; Jan 2011: p. 421-428 |
| Journal Source | Energy Policy Vol. 39, No. 1; Jan 2011: p. 421-428 |
| Key Words | Cellulosic Ethanol ; Bioelectricity ; CHP |