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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Greenhouse Gas Footprint, Water-Intensity, and Production Cost of Bio-Based Isopentenol as a Renewable Transportation Fuel
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Greenhouse Gas Footprint, Water-Intensity, and Production Cost of Bio-Based Isopentenol as a Renewable Transportation Fuel

机译：温室气体占地面积，水强度和生物的异戊烯醇的生产成本，是可再生运输燃料

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摘要

Although ethanol remains the dominant liquid biofuel in the global market, there is a strong interest in high-energy density and low-hygroscopicity compounds that can be incorporated into gasoline at levels beyond the current ethanol blend wall. Isopentenol (3-methyl-3-buten-1-ol) is one of these promising advanced biofuels that is also an important precursor for isoprene (the main component of natural rubber). In this study, we model the production cost, greenhouse gas (GHG) emissions, and water footprint of biologically produced isopentenol, including the current state of the technology and the impact of potential improvements. We find that the minimum selling price of biobased isopentenol, given the current state of technology demonstrated at bench-scale, is $5.14/L-gasoline equivalent, and the GHG footprint exceeds that of gasoline. However, biobased isopentenol could reach a $0.62/L-gasoline equivalent [$2.4/gal-gasoline equivalent (gge), just 5% above the 10-year average gasoline price] in an optimized future case where yield and other process parameters are pushed to near their theoretical limits. In this future case, isopentenol could achieve a GHG reduction of 90% relative to gasoline and a carbon abatement cost of $9.3/metric ton CO2e. Reaching these goals will require dramatic improvements in isopentenol yield, near-100% recovery of ionic liquid used in pretreatment, and low-lignin and high-cellulose and-hemicellulose biomass feedstocks.
机译：虽然乙醇仍然是全球市场的主导液体生物燃料，但对高能密度和低吸湿性化合物存在浓厚的兴趣，这些化合物可以在电流乙醇混合物壁的水平下掺入汽油中。异戊烯醇（3-甲基-3-丁烯-1- ol）是这些有前途的先进生物燃料之一，也是异戊二烯（天然橡胶的主要成分）的重要前体。在这项研究中，我们模拟了生产成本，温室气体（GHG）排放和生物生产的异戊酚的水占地面积，包括当前技术的现状和潜在改进的影响。我们发现，鉴于台阶规模证明现有技术状态的生物化等内酚酚的最低销售价格为5.14 / L-汽油等价物，GHG足迹超过汽油的占地面积。然而，Biobased异戊烯醇可以达到0.62 / L-汽油等同物[$ 2.4 / gal-汽油当量（GGE），仅在10年的平均水平汽油价格上高于5％]在推动收益和其他工艺参数的优化外壳中靠近他们的理论限制。在这一未来的情况下，异戊烯醇可以达到90％相对于汽油的温室气体和9.3美元/公吨CO2E的碳减量成本。达到这些目标将需要在预处理预处理中使用的近100％回收离子液体，低木质素和高纤维素和半纤维素生物量原料的急剧改善。

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