Experimental study on microwave pyrolysis of eucalyptus camaldulensis leaves: a promising approach for bio-oil recovery
Received date: 28 Feb 2024
Accepted date: 09 Apr 2024
Copyright
Eucalyptus species are extensively cultivated trees commonly used for timber production, firewood, paper manufacturing, and essential nutrient extraction, while lacking consumption of the leaves increases soil acidity. The objective of this study was to recover bio-oil through microwave pyrolysis of eucalyptus camaldulensis leaves. The effects of microwave power (450, 550, 650, 750, and 850 W), pyrolysis temperature (500, 550, 600, 650, and 700 °C), and silicon carbide amount (10, 25, 40, 55, and 70 g) on the products yields and bio-oil constituents were investigated. The yields of bio-oil, gas, and residue varied within the ranges of 19.8–39.25, 33.75–46.7, and 26.0–33.5 wt %, respectively. The optimal bio-oil yield of 39.25 wt % was achieved at 650 W, 600 °C, and 40 g. The oxygenated derivatives, aromatic compounds, aliphatic hydrocarbons, and phenols constituted 40.24–74.25, 3.25–23.19, 0.3–9.77, and 1.58–7.75 area % of the bio-oils, respectively. Acetic acid (8.17–38.18 area %) was identified as a major bio-oil constituent, and hydrocarbons with carbon numbers C1 and C2 were found to be abundant. The experimental results demonstrate the potential of microwave pyrolysis as an eco-friendly and efficient way for converting eucalyptus waste into valuable bio-oil, contributing to the sustainable utilization of biomass resources.
Key words: bio-oil recovery; eucalyptus leaves; microwave pyrolysis
Muhammad Kashif , Faizan Ahmad , Weitao Cao , Wenke Zhao , Ehab Mostafa , Yaning Zhang . Experimental study on microwave pyrolysis of eucalyptus camaldulensis leaves: a promising approach for bio-oil recovery[J]. Frontiers of Chemical Science and Engineering, 2024 , 18(10) : 115 . DOI: 10.1007/s11705-024-2466-5
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