This study revisited the fundamentals of allocation to joint products and proposed new models for allocating common greenhouse gases emissions among coproducts of biorefineries. These emissions may account for more than 80% of the total emissions of greenhouse gases of the biorefineries. The proposed models optimize the reward of coproducts for their compliance to environmental requirements. They were illustrated by a case study of wheat straw biorefinery built on the literature. Several scenarios were considered with regard to the grain yield, field emissions of greenhouse gases, allocation between grain and straw and policy requirements. The results conform to the expectations and are sensitive to the policy targets and to the environmental performance of the counterpart system. Further research works are necessary to achieve a full application to complex processes. However, the proposed models are promising towards assessing the simultaneous compliance of coproducts of a biorefinery to environment policy requirements.

这项研究重新探讨了分配给联合产品的基本原则，并提出了在生物精炼厂的副产品之间分配常见温室气体排放量的新模型。这些排放可能占生物精炼厂温室气体排放总量的80％以上。提出的模型优化了副产品因符合环境要求而带来的回报。通过建立在文献基础上的小麦秸秆生物精炼厂的案例研究对它们进行了说明。考虑了关于粮食产量，温室气体田间排放，粮食和稻草之间的分配以及政策要求的几种方案。结果符合预期，并且对政策目标和对等系统的环境绩效敏感。为了完全应用到复杂过程中，有必要进行进一步的研究工作。但是，提出的模型有望评估生物炼油厂副产品是否同时符合环境政策要求。