Torrefaction, temperature, and heating rate dependencies of pyrolysis of coffee grounds: Its performances, bio-oils, and emissions
Yükleniyor...
Dosyalar
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCI LTD
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The torrefaction pretreatment is of great significance to the efficient conversion of biomass residues into bioenergy. In this study, the effects of the three torrefaction temperatures (200, 250, and 300 degrees C) on the pyrolysis performance and products of coffee grounds (CG) were quantified. The torrefaction treatment increased the initial devolatilization and maximum peak temperatures of the CG pyrolysis. Activation energy of CG250 was lower than that of CG and more conducive to the pyrolysis. Torrefaction altered the distributions of the pyrolytic products and promoted the generation of C=C. Torrefaction changed the composition ratio of the pyrolytic biooils although cyanoacetic acid and 2-butene still dominated the bio-oils. The joint optimization pointed to pyrolysis temperature > 600 degrees C and torrefaction temperature <= 270 degrees C as the optimal conditions. Our experimental results also verified that torrefaction of CG may be more suitable at 200 and 250 degrees C than 300 degrees C.
Açıklama
This research was financially supported by the National Natural Science Foundation of China (No. 51978175), the Scientific and Technological Planning Project of Guangzhou, China (No. 202103000004), and the Science and Technology Planning Project of Yunfu, Guangdong Province, China (No. 2020040401).
Anahtar Kelimeler
Pyrolysis, Torrefaction, Second-Generation Biofuels, Tg-Ftir, Kinetic Analyses, Waste Biomass
Kaynak
Bioresource Technology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
345
Sayı
Künye
Fu, J., Liu, J., Xu, W., Chen, Z., Evrendilek, F., & Sun, S. (2022). Torrefaction, temperature, and heating rate dependencies of pyrolysis of coffee grounds: Its performances, bio-oils, and emissions. Bioresource Technology, 345, 126346.
