Kraiem Takwa, Hassen Aida Ben, Belayouni Habib, Jeguirim Mejdi
Centre de Recherche et des Technologies de l'Energie, Technopôle Borj-Cédria, B.P No. 95, 2050, Hammam Lif, Tunisia.
Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092, Tunis, Tunisia.
Environ Sci Pollut Res Int. 2017 Apr;24(11):9951-9961. doi: 10.1007/s11356-016-7704-z. Epub 2016 Sep 24.
In this present work, the disposal of waste frying oil was explored. The experiment tests were performed under nitrogen (N) atmosphere at 5 °C/min heating rate from the ambient temperature to 500 °C. In these operating conditions, the obtained pyrolitic liquid fraction was 76 wt% formed by 63.87 wt% of crude bio-oil and 12.13 wt% of aqueous fraction. The chemical characterization using FTIR, GC, and GC/MS has revealed that the bio-oil is a complex chemical mixture of linear saturated, unsaturated, and cyclic hydrocarbons and oxygenated compounds such as carboxylic acids, ketones, aldehydes, and alcohols. Moreover, the produced bio-oil can be considered as promising fuel with high calorific value (∼39 MJ/kg). However, the higher acidity (∼125 mg KOH/g sample) and viscosity (9.53 cSt at 40 °C) limit currently its direct use in engines. Therefore, although several promising results, further investigations are requested to improve the bio-oil quality in order to find an environmentally friendly issue to waste frying oil.
在本研究中，对废弃煎炸油的处理进行了探索。实验测试在氮气（N）气氛下，以5℃/min的升温速率从室温加热至500℃进行。在这些操作条件下，获得的热解液体馏分占76 wt%，其中粗生物油占63.87 wt%，水相馏分占12.13 wt%。使用傅里叶变换红外光谱（FTIR）、气相色谱（GC）和气相色谱-质谱联用（GC/MS）进行的化学表征表明，生物油是线性饱和烃、不饱和烃、环烃以及含氧化合物（如羧酸、酮、醛和醇）的复杂化学混合物。此外，所生产的生物油可被视为具有高热值（约39 MJ/kg）的有前景的燃料。然而，较高的酸度（约125 mg KOH/g样品）和粘度（40℃时为9.53 cSt）目前限制了其在发动机中的直接使用。因此，尽管取得了一些有前景的结果，但仍需要进一步研究以提高生物油质量，以便找到一种处理废弃煎炸油的环保方法。
