Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6691409 | Applied Energy | 2014 | 10 Pages |
Abstract
Oxidative torrefaction is a method to reduce the operating cost of upgrading biomass. To understand the potential of oxidative torrefaction and its impact on the internal structure of biomass, non-oxidative and oxidative torrefaction of two fibrous biomass materials (oil palm fiber and coconut fiber) and two ligneous ones (eucalyptus and Cryptomeria japonica) at 300 °C for 1 h are studied and compared with each other. Scanning electron microscope (SEM) observations are also performed to explore the impact of torrefaction atmosphere on the lignocellulosic structure of biomass. The results indicate that the fibrous biomass is more sensitive to O2 concentration than the ligneous biomass. In oxidative torrefaction, an increase in O2 concentration decreases the solid yield. The energy yield is linearly proportional to the solid yield, which is opposite to the behavior of non-oxidative torrefaction. The performance of non-oxidative torrefaction is better than that of oxidative torrefaction. As a whole, ligneous biomass can be torrefied in oxidative environments at lower O2 concentrations, whereas fibrous biomass is more suitable for non-oxidative torrefaction.
Keywords
Related Topics
Physical Sciences and Engineering
Energy
Energy Engineering and Power Technology
Authors
Wei-Hsin Chen, Ke-Miao Lu, Wen-Jhy Lee, Shih-Hsien Liu, Ta-Chang Lin,