Kasar Pamreishang, Ahmaruzzaman Md
Department of Chemistry, National Institute of Technology, Silchar, 788 010, India.
Sci Rep. 2022 Jun 29;12(1):10987. doi: 10.1038/s41598-022-15371-8.
Recycling polymeric waste and heavy oil residues are important for energy recovery and raw material processing. Catalytic pyrolysis is a unique technology used to generate alternative energy, and it can stands out to be one of the environmentally friendly and alternative routes for the generation of renewable energy. Limited study has been reported in the literature on the co-cracking of residual fuels with waste plastics to establish its properties and potential. In this study, we have characterized the products in liquid form resulting from the co-cracking of residual fuel oil (RFO) with plastic waste in an isothermal condition. The characterization was carried out using nuclear magnetic resonance (H NMR & C NMR), Fourier transforms infrared spectroscopy (FTIR), gel permeation chromatography (GPC), bomb calorimetry, and ultimate analyzer, in addition to the characterization of the flashpoint, pour point, and density. As a result of co-cracking, the liquid exhibits a significant decline in the overall molecular weight and an increase in the content of saturated aliphatic carbon and a decrease in the protonated aromatic carbons with aliphatic compounds as the primary constituent were observed from the spectra, having a pour point of 291.15-192.15 K and high calorific values between 42-45 MJ/kg. The characteristics of the liquid reveal a synergistic effect of co-cracking and demonstrate the potential of the co-cracking process of waste plastics with residual fuel to be an alternate source of energy and added-value chemical product recovery routes.
回收聚合物废料和重油残渣对于能量回收和原材料加工至关重要。催化热解是一种用于产生替代能源的独特技术，它有望成为生成可再生能源的环保且替代途径之一。关于残余燃料与废塑料共裂解以确定其性质和潜力的研究，文献报道有限。在本研究中，我们对残余燃料油（RFO）与塑料废料在等温条件下共裂解产生的液态产物进行了表征。除了对闪点、倾点和密度进行表征外，还使用核磁共振（H NMR和C NMR）、傅里叶变换红外光谱（FTIR）、凝胶渗透色谱（GPC）、弹式量热法和元素分析仪进行了表征。共裂解的结果是，液体的总分子量显著下降，饱和脂肪族碳含量增加，从光谱中观察到质子化芳香族碳减少，以脂肪族化合物为主要成分，倾点为291.15 - 192.15 K，热值在42 - 45 MJ/kg之间。液体的特性揭示了共裂解的协同效应，并证明了废塑料与残余燃料共裂解过程作为替代能源和增值化学产品回收途径的潜力。
