State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China.
College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, China.
Waste Manag. 2024 Oct 1;187:22-30. doi: 10.1016/j.wasman.2024.07.003. Epub 2024 Jul 5.
The widespread use of plastic mulch film (PMF) has led to significant environmental pollution, with PMF residues dispersed and mixed with straw and soil, posing challenges for recycling. Here, we proposed the mobile pyrolysis facility for the cotton straw and mulch film mixture (CMM) to mitigate the collection, storage, and transportation costs, while the application of co-pyrolysis technology for CMM conversion could improve the added value of products. Additionally, centralized combustion power generation and centralized pyrolysis systems were also established to evaluate and compare their sustainability from economic and environmental perspectives. Results showed that mobile pyrolysis has better economic performance than the centralized scenarios, due to its high internal rate of return (31 %) and significant net present value (29.21 M USD). Meanwhile, the mobile pyrolysis facility achieved a GWP of -1.298 kgCO-eq/kg, reducing emissions by 70.79 % and 38.82 % compared to the two centralized scenarios. In conclusion, mobile pyrolysis technology provides a promising solution for PMF residue recycling because of its economically competitive approach with a lower carbon footprint.
广泛使用塑料地膜（PMF）导致了严重的环境污染，PMF 残片与秸秆和土壤混合分散，给回收带来了挑战。在这里，我们提出了一种用于棉花秸秆和地膜混合物（CMM）的移动热解设备，以降低收集、储存和运输成本，同时应用共热解技术对 CMM 进行转化，可以提高产品的附加值。此外，还建立了集中燃烧发电和集中热解系统，从经济和环境角度评估和比较它们的可持续性。结果表明，由于移动热解具有较高的内部收益率（31%）和显著的净现值（2921 万美元），因此具有比集中方案更好的经济性能。同时，移动热解设备的 GWP 为-1.298 kgCO-eq/kg，与两个集中方案相比，排放量减少了 70.79%和 38.82%。总之，移动热解技术为 PMF 残片的回收提供了一种有前途的解决方案，因为它具有经济竞争力，碳足迹更低。
