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Production and Properties of Bio-oils from the Fast Pyrolysis of Ma Bamboo (Dendrocalamus latiflorus) and Green Bamboo (Bambusa oldhamii) in Taiwan

  • Date of declaration:2018-03-27
Yu-Jen Lin, Chen-Lung Ho, Seng-Rung Wu
Year
2018
Key Words
biomass, bio-oil, fast pyrolysis, ma bamboo, green bamboo.
Abstract

Bamboo is viewed as a potential feedstock for the future global energy supply due to the existence of many significantly fast-growing and abundant species. In this study, ma bamboo (Dendrocalamus latiflorus) and green bamboo (Bambusa oldhamii) were used as feedstock to produce pyrolysis liquid (bio-oil) using a fast pyrolysis technology at a pyrolytic temperature of 460℃, and the basic properties of the bio-oils were analyzed. Results were compared to those of a previous study, which applied the same procedure to produce bio-oils from thorny bamboo (B. stenostachya) and long-branch bamboo (B. dolichoclada Hayat). Therefore, this study presents an integrated characterization of bio-oils from the 4 bamboo species. Results showed that higher heating values (HHVs) of bio-oils were 5.65 MJ kg-1 for ma bamboo at a moisture content of 44.2% and 9.39 MJ kg-1 for green bamboo at a moisture content of 43.4%. Both HHVs were relatively lower than those of thorny bamboo and long-branch bamboo for use as a bioenergy source. Analytical results of gas chromatography/mass spectrometry (GC-MS) showed that the main compounds of bio-oils from both ma bamboo and green bamboo consisted of similar proportions to those from thorny bamboo, including a good distribution of phenols, carboxylic acids, and ketones. Only the bio-oil of longbranch bamboo contained a significant proportion of such compounds, the major one of which was phenols with a large proportion of > 50%. Generally, these 4 bamboo bio-oils can be utilized as fuels. The refining technology must be further researched; however, they would be great potential materials instead of fossil fuel resources to provide various chemical compounds. In particular, the bio-oil of long-branch bamboo has the greatest potential.