Division for Quantitative Sustainability Assessment, Department of Management Engineering, Technical University of Denmark, Bygningstorvet, 2800 Lyngby, Denmark.
Department of Engineering, Aarhus University, Hangøvej 2, 8200 Aarhus, Denmark.
Sci Total Environ. 2018 Sep 1;635:100-111. doi: 10.1016/j.scitotenv.2018.03.357. Epub 2018 Apr 13.
The Green biorefinery (GBR) is a biorefinery concept that converts fresh biomass into value-added products. The present study combines a Process Flowsheet Simulation (PFS) and Life Cycle Assessment (LCA) to evaluate the technical and environmental performance of different GBR configurations and the cascading utilization of the GBR output. The GBR configurations considered in this study, test alternatives in the three main steps of green-biorefining: fractionation, precipitation, and protein separation. The different cascade utilization alternatives analyse different options for press-pulp utilization, and the LCA results show that the environmental profile of the GBR is highly affected by the utilization of the press-pulp and thus by the choice of conventional product replaced by the press-pulp. Furthermore, scenario analysis of different GBR configurations shows that higher benefits can be achieved by increasing product yields rather than lowering energy consumption. Green biorefining is shown to be an interesting biorefining concept, especially in a Danish context. Biorefining of green biomass is technically feasible and can bring environmental savings, when compared to conventional production methods. However, the savings will be determined by the processing involved in each conversion stage and on the cascade utilization of the different platform products.
绿色生物精炼厂（GBR）是一种将新鲜生物质转化为增值产品的生物精炼厂概念。本研究结合了过程流程图模拟（PFS）和生命周期评估（LCA），以评估不同 GBR 配置的技术和环境性能，以及 GBR 输出的级联利用。本研究考虑的 GBR 配置测试了绿色生物精炼的三个主要步骤中的替代方案：分馏、沉淀和蛋白质分离。不同的级联利用替代方案分析了压榨浆利用的不同选择，LCA 结果表明，GBR 的环境状况受压榨浆利用的影响很大，因此受压榨浆替代的常规产品选择的影响很大。此外，不同 GBR 配置的情景分析表明，通过提高产品产量而不是降低能源消耗，可以实现更高的收益。绿色生物精炼被证明是一种有趣的生物精炼概念，特别是在丹麦背景下。与传统生产方法相比，绿色生物质的生物精炼在技术上是可行的，并且可以带来环境节约。然而，节省的程度将取决于每个转化阶段的处理以及不同平台产品的级联利用。
