Olive stone (OS) is a lignocellulosic material obtained as a coproduct in the olive oil production industry, mainly composed of hemicelluloses, with xylose accounting for 24.4 % by weight as the main sugar. In this study, an optimized process for obtaining furfural from OS was assessed. The process consists of two steps; the first one, aimed at maximizing the solubilization of xylose, was performed in an autoclave at 130 °C and 2.6 %w/v H₂SO₄, resulting in 83 % xylose recovery in the liquid fraction. The second step, using the optimized liquid produced previously, was carried out in a microwave reactor at 200 °C with the addition of 0.1 M FeCl₃ from which a solution with 18 g/L furfural and 63.3 % yield was obtained, equivalent to almost 90 kg of furfural per tonne of processed OS. Taking into account these results along with additional advantages in comparison with other lignocellulosic materials (such as no need of a grinding stage and being already available in the olive mills), OS can be considered as a promising raw material for furfural production.

橄榄石 (OS) 是橄榄油生产工业中作为副产品获得的木质纤维素材料，主要由半纤维素组成，木糖占 24.4%（重量）作为主要糖分。在这项研究中，评估了从 OS 中获得糠醛的优化过程。该过程包括两个步骤；第一个旨在最大限度地提高木糖的溶解度，在 130 °C 和 2.6 %w/v H ₂ SO ₄的高压釜中进行，导致液体部分中木糖回收率为 83%。第二步，使用先前生产的优化液体，在微波反应器中在 200 °C 下进行，加入 0.1 M FeCl ₃从中获得了 18 g/L 糠醛和 63.3% 产率的溶液，相当于每吨加工 OS 几乎 90 kg 糠醛。考虑到这些结果以及与其他木质纤维素材料相比的其他优势（例如不需要研磨阶段并且已经在橄榄磨机中可用），OS 可被视为用于糠醛生产的有前途的原材料。