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

摘要

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°C, 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 Hay at). Therefore, this study presents an integrated characterization of bio-oils from the 4 bamboo species. Results showed that higher heatingvalues (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 distributionof phenols, carboxylic acids, and ketones. Only the bio-oil of long-branch 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.