Journal
BIORESOURCE TECHNOLOGY
Volume 266, Issue -, Pages 389-397Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.06.106
Keywords
Spent mushroom substrate; Combustion; TG-FTIR; TG-MS; Iso-conversional methods
Funding
- Scientific and Technological Planning Project of Guangzhou, China [201704030109, 2016201604030058]
- Science and Technology Planning Project of Guangdong Province, China [2015B020235013, 2017A050501036, 2017A040403059]
- Guangdong Special Support Program for Training High Level Talents [2014TQ01Z248]
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The present study systematically investigated the combustion characteristics of spent mushroom substrate (SMS) using TG-MS (thermogravimetric/mass spectrometry) and TG-FTIR (thermogravimetric/Fourier transform infrared spectrometry) under five heating rates. The physicochemical characteristics and combustion index pointed to SMS as a promising biofuel for power generation. The high correlation coefficient of the fitting plots and similar activation energy calculated by various methods indicated that four suitable iso-conversional methods were used. The activation energy varied from 130.06 to 192.95 kJ/mol with a mean value of 171.49 kJ/ mol using Flynn-Wall-Ozawa and decreased with the increased conversion degree. The most common emissions peaked at the range of 200-400 degrees C corresponding to volatile combustion stage, except for CO2, NO2 and NO. The peak CO2 emission occurred at 439.11 degrees C mainly due to the combustion of fixed carbon.
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