In this paper, bio-oil production, kinetics analysis, and exergy analysis of Prosopis juliflora pyrolysis are reported. The biomass was segregated into two different particle sizes (< 0.5 mm and > 2.0 mm). Elemental analysis and higher heating value of Prosopis juliflora biomass were estimated. Thermogravimetric analysis of biomass was performed at 5 different heating rates of (5 °C min⁻¹, 10 °C min⁻¹, 15 °C min⁻¹, 20 °C min⁻¹, 25 °C min⁻¹). Thermal degradation of Prosopis juliflora biomass was performed at different temperature ranging from 400 °C, 450 °C, 500 °C, 550 °C to 600 °C. The maximum liquid yield was 17.4% obtained at 500 °C with 0.5 mm particle size. Gas chromatography-mass spectrometry analysis of the Prosopis juliflora liquid phase showed the presence of petroleum compounds. Iso-conversion method is used to establish the kinetic parameters. The mean activation energies obtained from the Kissinger, Kissinger-Akahira-Sunose, Ozawa-Flynn-Wall, and Friedman model are 107.583 kJ mol⁻¹, 138.78 kJ mol⁻¹,145.36 kJ mol⁻¹, and 157.21 kJ mol⁻¹ respectively. The maximum exergy efficiency for pyro-gas was 54.92%, with a particle size of < 0.5 mm at 600 °C. The present study shows that hazardous material like Prosopis juliflora can be converted into energy-dense fuel, thereby paving way for mitigation of the toxic weed.

Graphical abstract

本文报道了Prosopis juliflora热解的生物产油，动力学分析和火用分析。将生物质分离成两种不同的粒径（<0.5 mm和> 2.0 mm）。估算了胡桃（Prosopis juliflora）生物量的元素分析和较高的热值。在5种不同的加热速率下（5℃min ^-1，10 ℃min ^-1，15 ℃min ^-1，20 ℃min ^-1，25 ℃min ^-1）进行生物质的热重分析。朱Pro的热降解生物质在400°C，450°C，500°C，550°C至600°C的不同温度下进行。在500°C和0.5 mm粒径下获得的最大液体产率为17.4％。猕猴桃液相的气相色谱-质谱分析表明存在石油化合物。等值转换法用于建立动力学参数。从基辛格，基辛格-赤平-Sunose，小泽-弗林墙，和Friedman模型获得的平均活化能分别为107.583千焦摩尔^-1，138.78千焦耳摩尔^-1，145.36千焦耳摩尔^-1，和157.21千焦耳摩尔^-1分别。烟气的最大火用效率为54.92％，在600°C时粒径小于0.5 mm。本研究表明，有害物质如胡桃（Prosopis juliflora）可以转化为能量密集的燃料，从而为缓解有毒杂草铺平了道路。

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