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Like most biomasses, almond shells (AS) have a high energy potential, an energy that we can recuperate by different thermochemical conversion methods such as combustion, gasification and pyrolysis. These technologies are very attractive as environmentally friendly energy conversion processes and are successfully used to recover energy from lignocellulosic materials. This paper gathers the results of the different experiments we have carried out on the slow pyrolysis of almond shells at 700 ℃, along with the synergistic effects with polypropylene (PP) during co-pyrolysis. Formulas based on the law of mixtures were used to assess the bio-oil properties and is compared with the experimental analyses. It turns out that the addition of PP interacted well with the AS. A positive synergy was observed. Both physical and chemical properties are improved. Concerning the mass distribution of pyrolysis products such as char, gases, and bio-oil, a negative synergy was observed.

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Synergistic Effect of Polypropylene with Almond Shells Through Slow Co-pyrolysis

  • 会议论文

  • 发表日期：

    2026年

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  • Najla Grioui,
  • Darcy Odounga Lendoye,
  • Amal Elleuch,
  • Kamel Halouani

摘要

Like most biomasses, almond shells (AS) have a high energy potential, an energy that we can recuperate by different thermochemical conversion methods such as combustion, gasification and pyrolysis. These technologies are very attractive as environmentally friendly energy conversion processes and are successfully used to recover energy from lignocellulosic materials. This paper gathers the results of the different experiments we have carried out on the slow pyrolysis of almond shells at 700 ℃, along with the synergistic effects with polypropylene (PP) during co-pyrolysis. Formulas based on the law of mixtures were used to assess the bio-oil properties and is compared with the experimental analyses. It turns out that the addition of PP interacted well with the AS. A positive synergy was observed. Both physical and chemical properties are improved. Concerning the mass distribution of pyrolysis products such as char, gases, and bio-oil, a negative synergy was observed.