Department of Chemical Engineering &Technology Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, Uttar Pradesh, India.
Bioresour Technol. 2020 Jul;307:123161. doi: 10.1016/j.biortech.2020.123161. Epub 2020 Mar 7.
The thermal degradation of paper mill waste (PMW) has been investigated in presence and absence of Montmorillonite clay in the temperature range of ambient to 1000 °C and at the heating rates of 20 °C/min, 25 °C/min and 30 °C/min. Proximate and ultimate analyses and evaluation of calorific value (HHV) of PMW have been carried out using standard protocols. The thermo-gravimetric analysis (TGA) and differential thermogravimetric (DTG) data obtained under both situations have been used to evaluate the kinetic and thermodynamic parameters and elucidate the reaction mechanism. The clay has also been characterized using TGA/DTG analysis, Fourier Transform Infra-Red (FTIR) spectroscopic analysis and X-ray diffraction (XRD), Energy dispersive spectroscopy (EDS), and scanning electron microscopic (SEM) techniques. The activation energy, pre-exponential factor and thermodynamic parameters have been evaluated using the model-free iso-conversional method of Flynn-Wall-Ozawa (FWO) and Vyazovkin and the distributed activation energy model (DAEM). The Montmorillonite clay has influenced the degradation process appreciably through its catalytic action.
研究了在蒙脱土存在和不存在的情况下，纸厂废物（PMW）在环境温度到 1000°C 的温度范围内，以 20°C/min、25°C/min 和 30°C/min 的加热速率下的热降解情况。使用标准协议对 PMW 的近似分析和最终分析以及热值（HHV）进行了评估。在这两种情况下获得的热重分析（TGA）和差热重（DTG）数据用于评估动力学和热力学参数，并阐明反应机制。还使用热重分析/差热分析、傅里叶变换红外光谱（FTIR）分析和 X 射线衍射（XRD）、能量色散光谱（EDS）以及扫描电子显微镜（SEM）技术对粘土进行了表征。使用无模型等转化率法 Flynn-Wall-Ozawa（FWO）和 Vyazovkin 以及分布活化能模型（DAEM）评估了活化能、指数前因子和热力学参数。蒙脱土通过其催化作用显著影响了降解过程。
