Enhanced Landfill Mining (ELFM) is a powerful tool for the sustainable management of landfill sites, aiming at both land reclamation and material recovery/reuse. To enhance the recovery and recycling rate of excavated plastic fractions, in most cases destined to energy recovery, new convenient, effective and sustainable strategies are needed. In this study, a recovery and valorization process of ELFM excavated plastics has been validated through an integrated experimental and Life Cycle Assessment (LCA) approach, demonstrating the environmental sustainability of the secondary raw material generated, in terms of use of resources and emissions generated. In particular, the secondary granulate from ELFM was compared with a virgin product and the last one resulted to have a higher impact (more than 4.46 times greater than the first one), in particular for the use of the resource crude oil as raw material in the production of primary LDPE. The valorization process of the excavated plastic made the mechanical properties of the secondary raw material comparable to that of a primary material.

增强型垃圾填埋场开采（ELFM）是针对填埋场和材料回收/再利用的可持续管理垃圾填埋场的有力工具。为了提高发掘的塑料馏分的回收率和回收率，在大多数情况下，这些废料必须用于能源回收，因此需要新的便捷，有效和可持续的策略。在这项研究中，通过集成的实验和生命周期评估（LCA）方法对ELFM挖掘塑料的回收和增值过程进行了验证，从资源利用和排放方面证明了所产生的次生原材料在环境方面的可持续性。尤其是，将ELFM的次要颗粒与原始产品进行了比较，最后一个产品的影响更大（比第一个产品大4.46倍），特别是在原始LDPE生产中使用资源原油作为原料。挖掘出的塑料的增值过程使次级原材料的机械性能与初级原材料的机械性能相当。