Loess Plateau Eco-environment Restoration & Livable Villages Research Center, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Deep Sea Engineering Division, Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China.
Bioresour Technol. 2021 Oct;338:125486. doi: 10.1016/j.biortech.2021.125486. Epub 2021 Jul 2.
The integration of anaerobic digestion (AD) and pyrolysis (Py) could be a solution to economically utilize the organic fraction of municipal solid waste (OFMSW). However, it is not clear whether the environmental impact of the integrated pathway always outperforms the two single technologies. In this study, two integrated pathways (AD-Py, Py-AD) were compared with single AD and Py from the life cycle environmental impacts point of view. The results indicate that the environmental impacts of the four pathways are heavily dependent on their energy inputs and outputs. AD-Py is more environmentally friendly (-11.53 of total environmental impact /kg OFMSW) than single AD or Py. Py-AD exhibites the heaviest environmental burden (2.75 of total environmental impact /kg OFMSW) in all pathways. Therefore, AD-Py can be the top priority of treating OFMSW among the four pathways from the environmental viewpoint. This work could provide a theoretical support for the utilization of OFMSW.
厌氧消化（AD）和热解（Py）的整合可以是经济利用城市固体废物（MSW）有机部分的一种解决方案。然而，目前尚不清楚整合途径的环境影响是否总是优于两种单一技术。在这项研究中，从生命周期环境影响的角度比较了两种整合途径（AD-Py、Py-AD）与单一 AD 和 Py。结果表明，四种途径的环境影响严重依赖于它们的能量输入和输出。AD-Py 比单一 AD 或 Py 更环保（-11.53 总环境影响/kg MSW）。在所有途径中，Py-AD 表现出最重的环境负担（2.75 总环境影响/kg MSW）。因此，从环境角度来看，AD-Py 可以成为处理 MSW 的首要途径。这项工作可以为 MSW 的利用提供理论支持。
