Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.
Bioresour Technol. 2020 Sep;311:123480. doi: 10.1016/j.biortech.2020.123480. Epub 2020 May 5.
The present study addressed the kinetics characteristics and pyrolysis behaviour of waste biomass Azadirachta indica (NM) and Phyllanthus emblica kernel (AM) in a thermogravimetric analyzer. Six model-free techniques such as Kissinger-Akahira-Sunose, Distributed Activation Energy Model, Friedman, Coats-Redfern, Ozawa-Flynn-Wall, Vyazovkin and Criado method were employed to evaluate the kinetic parameters at five varying heating rates (10-50 °C min). The physicochemical inspection directed that both the biomass had excellent prospects to produce energy and finest chemicals. FTIR study pointed strong evidence of moisture, protein, acid, and aromatics. The average apparent activation energy was found to be 176.66, 193.67, 196.06, 177.32 and 204.23 kJ mol for NM and 184.77, 195.10, 189.95, 186.46, 184.57 kJ mol for AM for KAS, OFW, FM, DAEM and VZ respectively. Further, master plot and thermodynamic study of AM and NM revealed that pyrolysis went through various reaction mechanisms at the time of pyrolysis.
本研究在热重分析仪中研究了废物生物质印楝（NM）和余甘子仁（AM）的动力学特性和热解行为。采用了 Kissinger-Akahira-Sunose、分布活化能模型、Friedman、Coats-Redfern、Ozawa-Flynn-Wall、Vyazovkin 和 Criado 等六种无模型方法，在五个不同的加热速率（10-50°C min）下评估了动力学参数。物理化学检验表明，这两种生物质都具有很好的产生能量和最佳化学品的前景。FTIR 研究表明存在大量水分、蛋白质、酸和芳烃。对于 NM，平均表观活化能分别为 176.66、193.67、196.06、177.32 和 204.23 kJ/mol，对于 AM，KAS、OFW、FM、DAEM 和 VZ 的平均表观活化能分别为 184.77、195.10、189.95、186.46 和 184.57 kJ/mol。此外，AM 和 NM 的主控图和热力学研究表明，在热解过程中，热解经历了各种反应机制。
