发帖
雷达卡
英文文献：Centralized versus decentralized biorefinery configurations for cellulosic ethanol: Can we reconcile environmental sustainability and profitability?-纤维素乙醇的集中与分散生物精炼厂配置:我们能否协调环境可持续性和盈利能力?本文比较了两种情况:一种是纤维素乙醇的集中式生物精炼厂进行所有加工，另一种是与分散的当地仓库相联系的生物精炼厂，后者将生物质预处理成浓缩的煤块
英文文献作者：Egbendewe-Mondzozo, Aklesso,Swinton, Scott M.,Bals, Bryan D.,Dale, Bruce E.
英文文献摘要：
This paper compares environmental and profitability outcomes for a centralized biorefinery for cellulosic ethanol that does all processing versus a biorefinery linked to a decentralized array of local depots that pretreat biomass into concentrated briquettes. The analysis uses a spatial bioeconomic model that maximizes profit from crop and energy products, subject to the requirement that the biorefinery must be operated at full capacity. The model draws upon biophysical crop input-output coefficients simulated with the Environmental Policy Integrated Climate (EPIC) model, as well as market input and output prices, spatial transportation costs, ethanol yields from biomass, and biorefinery capital and operational costs. The model was applied to 82 cropping systems simulated across 37 sub-watersheds in a 9-county region of southern Michigan in response to ethanol prices simulated to rise from $1.78 to $3.36 per gallon. Results show that the decentralized local biomass processing depots lead to lower profitability but better environmental performance, due to more reliance on perennial grasses than the centralized biorefinery. Simulated technological improvement that reduces the processing cost and increases the ethanol yield of switchgrass by 17% could cause a shift to more processing of switchgrass, with increased profitability and environmental benefits.
该分析使用了一种空间生物经济模型，使作物和能源产品的利润最大化，但必须满足生物精炼厂必须满负荷运转的要求。该模型利用环境政策综合气候(EPIC)模型模拟的生物物理作物投入产出系数，以及市场投入产出价格、空间运输成本、生物质乙醇产量、生物炼制资本和运营成本。为了应对乙醇价格从每加仑1.78美元上涨到3.36美元的情况，该模型在南密歇根9个县的37个流域模拟了82种种植系统。结果表明，与集中式生物精炼厂相比，分散式当地生物质加工仓库更依赖多年生牧草，因此利润较低，但环保性能较好。模拟技术改进可以降低加工成本，使柳枝稷的乙醇产量提高17%，从而使柳枝稷转向更多的加工，提高利润和环境效益。
京公网安备 11010802022788号
