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<p>Environmentally sound municipal solid waste (MSW) management and recycling is one of the critical elements for urban sustainable development. The MSW pyrolysis for oil has already studied by numerous researchers. However, few studies focus on the effect of the non-homogeneity present in MSW pyrolysis. Based on the analysis of MSW components and pyrolysis yield in different regions and seasons, the study proposed variation coefficient (<i>C</i><sub>v</sub>) and ratio of ash to volatile matter (A/V) as the evaluation indexes for homogenization system, with 15% as the critical value for the homogenization evaluation system. Forestry residues, pine (PB) and cypress branch (CB), were selected to homogenize the municipal solid waste to ensure that the volatile matter content of the municipal solid waste remains between 72 and 75%. The experimental results showed that the homogenized MSW pyrolysis oil yield increased by 3.5–5.5% and the higher heating value of pyrolysis oil increased by 7.07–10.31&#xa0;MJ&#xa0;kg<sup>−1</sup> compared with the MSW. Moreover, the pyrolysis apparent activation energy obtained from theoretical calculation decreased by 8.09–10.31&#xa0;MJ&#xa0;kg<sup>−1</sup> and 7.07–8.01&#xa0;MJ&#xa0;kg<sup>−1</sup>, respectively, after homogenizing the municipal solid waste with pine (PB) and cypress branch (CB) from the thermogravimetric analysis.</p>

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Homogenization and pyrolysis of municipal solid waste with forestry residues

  • 期刊论文

  • 发表日期：

    2026年7月13日

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  • Shunli Zhang,
  • Lingwen Dai,
  • Zhiji Zhang,
  • Mengmeng Zhang,
  • Yuanxin Ma,
  • Xinqian Shu

摘要

Environmentally sound municipal solid waste (MSW) management and recycling is one of the critical elements for urban sustainable development. The MSW pyrolysis for oil has already studied by numerous researchers. However, few studies focus on the effect of the non-homogeneity present in MSW pyrolysis. Based on the analysis of MSW components and pyrolysis yield in different regions and seasons, the study proposed variation coefficient (Cv) and ratio of ash to volatile matter (A/V) as the evaluation indexes for homogenization system, with 15% as the critical value for the homogenization evaluation system. Forestry residues, pine (PB) and cypress branch (CB), were selected to homogenize the municipal solid waste to ensure that the volatile matter content of the municipal solid waste remains between 72 and 75%. The experimental results showed that the homogenized MSW pyrolysis oil yield increased by 3.5–5.5% and the higher heating value of pyrolysis oil increased by 7.07–10.31 MJ kg−1 compared with the MSW. Moreover, the pyrolysis apparent activation energy obtained from theoretical calculation decreased by 8.09–10.31 MJ kg−1 and 7.07–8.01 MJ kg−1, respectively, after homogenizing the municipal solid waste with pine (PB) and cypress branch (CB) from the thermogravimetric analysis.