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. 2019 Oct;289:121608. doi: 10.1016/j.biortech.2019.121608. Epub 2019 Jun 6.
This work deals with co-pyrolysis of polyethylene terephthalate (PET) with Samanea saman seeds (SS) to understand the kinetics and synergistic effects between two different feedstocks. SS and PET were blended in different ratios (1:1, 3:1 and 5:1) and iso-conversional models such as Kissinger-Akahira-Sunose (KAS), Friedman method (FM), Starink (ST), Ozawa-Flynn-Wall method (OFW), and Coats-Redfern method (CR) were used to calculate the kinetic parameters. Results substantiate assumed hypothesis that blending of SS and PET at 3:1 provided higher synergistic effect and RMS value, which in turn indicated maximum formation of hot volatiles during pyrolysis. Kinetic analysis confirmed that individual SS and PET required higher activation energy while blended SS and PET at 3:1 ratio required lower activation energy to start the reaction. The thermodynamic and kinetic analysis confirmed that biomass had complex reaction kinetics which depends on reaction rate as well as its order.
本工作研究了聚对苯二甲酸乙二醇酯 (PET) 与罗望子种子 (SS) 的共热解，以了解两种不同原料之间的动力学和协同效应。SS 和 PET 以不同的比例 (1:1、3:1 和 5:1) 混合，并使用 Kissinger-Akahira-Sunose (KAS)、Friedman 法 (FM)、Starink (ST)、Ozawa-Flynn-Wall 法 (OFW) 和 Coats-Redfern 法 (CR) 等等转化率模型来计算动力学参数。结果证实了假设，即 SS 和 PET 以 3:1 的比例混合提供了更高的协同效应和 RMS 值，这反过来又表明在热解过程中形成了更多的热挥发物。动力学分析证实，单独的 SS 和 PET 需要更高的活化能，而混合 SS 和 PET 以 3:1 的比例需要更低的活化能才能开始反应。热力学和动力学分析证实，生物质具有复杂的反应动力学，这取决于反应速率及其顺序。
