Thermal degradations and processes of waste tea and tea leaves via TG-FTIR: combustion performances, kinetics, thermodynamics, products and optimization
Yükleniyor...
Dosyalar
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The present study characterized the kinetic, thermodynamic and performance parameters, products, factorial interactions, and optimal conditions of combustions of waste tea (WT) and tea leaves (TL) in N-2/O-2 and CO2/O-2 atmospheres through a thermogravimetric/Fourier transform infrared spectrometry (TG-FTIR). The main combustion occurred in the range of 200-600 degrees C. The increased heating rate increased all the combustion parameters regardless of the fuel and atmosphere type. Activation energy was shown different change tendency with the increasing conversion (alpha). CO2, H2O, CH4, CO, C=O, NH3, and HCN were the main gas products of WT and TL combustions. A three-way interaction among fuel type, atmosphere type and heating rate was found to be significant. The joint optimization of mass loss, derivative TG, and differential scanning calorimetry was achieved using 1049.3 degrees C, TL, 40 degrees C/min, and CO2/O-2 atmosphere for the operational settings of temperature, fuel type, heating rate, and atmosphere type, respectively.
Açıklama
Anahtar Kelimeler
Waste Tea and Tea Leaves, Joint Optimizations, Iso-Conversional Methods, Combustion Technology, TG-FTIR
Kaynak
Bioresource Technology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
268
