کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8073885 | 1521445 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal behavior of waste tea pyrolysis by TG-FTIR analysis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
To investigate the kinetic behavior and the release of evolved gases in the pyrolysis process for waste tea, the technique of TG-FTIR at different heating rates was introduced in this study. The mass loss of the waste tea was divided into two steps: the volatilization of water at the temperature lower than 210 °C, and the volatilization of CO2 and organic compounds at the temperature range of 210-550 °C. FTIR (Fourier transform infrared) analysis indicated that CO2was the main gas released from the thermal degradation of waste tea. Moreover, the evolved gases from the waste tea also included H2O, CH3COOH, C6H5OH, CC and so on. Three model-free models and three model-fitting models were applied to investigate the pyrolysis process of waste tea. According to the values of the activation energy by the three model-free models and the correlation coefficient from model-fitting models, the activation energy (207.96 kJ/mol â¼Â 222.6 kJ/mol) and pre-exponential factor were determined for the pyrolysis of waste tea. The results of the model-fitting models indicated that three-dimension diffusion (spherical symmetry) model conformed to the pyrolysis mechanism of waste tea well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 103, 15 May 2016, Pages 533-542
Journal: Energy - Volume 103, 15 May 2016, Pages 533-542
نویسندگان
Linghui Tian, Boxiong Shen, Huan Xu, Fukuan Li, Yinyin Wang, Surjit Singh,