Department of Chemical Engineering, National Institute of Technology Srinagar, Srinagar 190006, India.
Department of Chemical Engineering, National Institute of Technology Srinagar, Srinagar 190006, India.
Bioresour Technol. 2021 Oct;337:125466. doi: 10.1016/j.biortech.2021.125466. Epub 2021 Jun 30.
The aim of this work was to study the thermogravimetric analysis through the pyrolysis of almond (Prunus amygdalus) shells for evaluating its potential for bioenergy at different heating rates (10, 25, and 50 K min). The activation energy values for the process were of the range of 153.0, 152.02, and 152.73 kJ mol as calculated by Kissenger-Akahira-Sunrose (KAS), Ozawa-Flynn-Wall (OFW) and Starink models respectively. The change in the Gibbs free energy was ~181 kJ mol. Diffusion-based reaction, followed by the chemical reaction mechanism,was dominant thermal degradation as envisaged by the Coats-Redfern method. The validation of the experiments was accomplished through the artificial neural network, reiterating its further usage in any conversional studies of biomass. A difference of < 10 kJ mol between the values of activation energy and enthalpy of the degradation reaction indicated favourable product formation. The results offer potential application of almond shells for energy production through pyrolysis.
本工作旨在通过对杏仁壳（Prunus amygdalus）的热解进行热重分析，以评估其在不同升温速率（10、25 和 50 K/min）下用于生物能源的潜力。通过 Kissenger-Akahira-Sunrose（KAS）、Ozawa-Flynn-Wall（OFW）和 Starink 模型分别计算得到，该过程的活化能值范围为 153.0、152.02 和 152.73 kJ/mol。吉布斯自由能的变化约为 181 kJ/mol。通过 Coats-Redfern 方法预测，基于扩散的反应随后是化学反应机制，是主要的热降解机制。通过人工神经网络对实验进行了验证，再次表明其在任何生物质的转化研究中的进一步使用。降解反应的活化能和焓值之间的差值<10 kJ/mol 表明有利于产物的形成。这些结果为通过热解生产杏仁壳能源提供了潜在的应用。
