期刊
JOURNAL OF CLEANER PRODUCTION
卷 168, 期 -, 页码 1625-1635出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2017.01.165
关键词
Second generation bioethanol; Biomass gasification; Syngas fermentation; Process simulation; Aspen plus; Financial analysis
资金
- DSM
- BE-Basic Foundation
- CAPES-BRAZIL
- CTBE/CNPEM (Brazilian Bioethanol Science and Technology Laboratory)
Production of second generation ethanol can be accomplished with biomass gasification followed by syngas fermentation using acetogenic bacteria in a hybrid process. Using process simulation and financial analysis, this study evaluated the feasibility of producing hydrous ethanol from sugarcane bagasse in a conceptual hybrid plant designed to be energetically self-sufficient. The process was found to be competitive with other second generation routes, achieving an ethanol yield of 330 L per metric ton of dry biomass and an overall carbon conversion of 30%. The minimum ethanol selling price to achieve Net Present Value break-even with 10% Internal Rate of Return was estimated to be 706 US$/m(3) after taxes in the base model. When accounting for uncertainties in the fixed capital investment and the cost of raw materials, the Net Present Value was found to be non-negative in 80% of the cases for a selling price of 783 US$/m(3). (C) 2017 Elsevier Ltd. All rights reserved.
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