| DOI: | 10.2172/1281137
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| 报告号: | ANL/ESD--16/11
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| 报告题名: | Life-cycle analysis of energy use, greenhouse gas emissions, and water consumption in the 2016 MYPP algal biofuel scenarios |
| 作者: | Frank, Edward; Pegallapati, Ambica K.; Davis, Ryan; Markham, Jennifer; Coleman, Andre; Jones, Sue; Wigmosta, Mark S.; Zhu, Yunhua
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| 出版年: | 2016
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| 发表日期: | 2016-06-16
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| 总页数: | 28
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 排放物
; 蒸发
; 盐度
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| 主题词: | EMISSIONS
; EVAPORATION
; SALINITY
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| 英文摘要: | The Department of Energy (DOE) Bioenergy Technologies Office (BETO) Multi-year Program Plan (MYPP) describes the bioenergy objectives pursued by BETO, the strategies for achieving those objectives, the current state of technology (SOT), and a number of design cases that explore cost and operational performance required to advance the SOT towards middle and long term goals (MYPP, 2016). Two options for converting algae to biofuel intermediates were considered in the MYPP, namely algal biofuel production via lipid extraction and algal biofuel production by thermal processing. The first option, lipid extraction, is represented by the Combined Algae Processing (CAP) pathway in which algae are hydrolyzed in a weak acid pretreatment step. The treated slurry is fermented for ethanol production from sugars. The fermentation stillage contains most of the lipids from the original biomass, which are recovered through wet solvent extraction. The process residuals after lipid extraction, which contain much of the original mass of amino acids and proteins, are directed to anaerobic digestion (AD) for biogas production and recycle of N and P nutrients. The second option, thermal processing, comprises direct hydrothermal liquefaction (HTL) of the wet biomass, separation of aqueous, gas, and oil phases, and treatment of the aqueous phase with catalytic hydrothermal gasification (CHG) to produce biogas and to recover N and P nutrients. The present report describes a life cycle analysis of energy use and greenhouse gas (GHG) emissions of the CAP and HTL options for the three scenarios just described. Water use is also reported. Water use during algal biofuel production comes from evaporation during cultivation, discharge to bleed streams to control pond salinity (âblowdownâ), and from use during preprocessing and upgrading. For scenarios considered to date, most water use was from evaporation and, secondarily, from bleed streams. Other use was relatively small at the level of fidelity being modeled now. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1281137
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/42086
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1281137.pdf（891KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Frank, Edward,Pegallapati, Ambica K.,Davis, Ryan,et al. Life-cycle analysis of energy use, greenhouse gas emissions, and water consumption in the 2016 MYPP algal biofuel scenarios. 2016-01-01.
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