The sustainable circular bioeconomy turns biogenic waste and residues into renewable resources to produce added value bio-based materials. According to the recent, Circular Economy Package EU legislation, mechanical recycling offers the best alternative EoL option for bio-based plastics in a complementary way with chemical recycling, with the latter taking over materials inadequate to be mechanically recycled. Techno-economic sustainability analysis (TESA) criteria and indicators to assure the feasibility and viability of mechanical recycling of post-consumer bio-based plastics, and the recirculation potential of the recovered material, are proposed based on the evaluation and synthesis of research results selected though a critical literature review. Organic recycling is considered as a preferred EoL option for post-consumer biodegradable bio-based plastics only when these products are found to be non-recyclable by the proposed TESA criteria. Environmental and social sustainability criteria, that constitute the other two pillars of sustainability, are not considered in the present work, but need to be included to complete the sustainability assessment of any End of Life (EoL) option. The proposed techno-economic sustainability criteria for mechanical recycling include: a) Mechanical recyclability, b) Economic viability, c) Common environmental/techno-economic criteria and also d) Recirculation potential of the materials recovered. Specific indicators are proposed as metrics for assessing the corresponding criteria.

可持续的循环生物经济将生物废料和残留物转化为可再生资源，以生产增值的生物基材料。根据欧盟最新的《循环经济计划》法规，机械回收利用与化学回收相辅相成的方式，为生物基塑料提供了最佳的EoL替代方案，而化学回收则替代了机械回收不足的材料。根据所选研究结果的评估和综合，提出技术经济可持续性分析（TESA）标准和指标，以确保对消费后生物基塑料进行机械回收的可行性和可行性，以及回收材料的再循环潜力。虽然是批评性的文献综述。仅当提议的TESA标准发现这些产品不可回收时，有机回收才被视为消费后可生物降解的生物基塑料的首选EoL选项。构成可持续性其他两个支柱的环境和社会可持续性标准在当前工作中并未考虑，但需要包括在内以完成任何寿命终止（EoL）选项的可持续性评估。拟议的机械回收技术经济可持续性标准包括：a）机械可回收性，b）经济可行性，c）通用的环境/技术经济标准，以及d）回收材料的再循环潜力。建议使用特定的指标作为评估相应标准的指标。