Li Gang;Ji Fang;Xiang Shunan;Zhou Yuguang;Jiang Mengmeng;Huang Zhigang

Beijing Technol & Business Univ, Sch Mat Sci & Mech Engn, Beijing 100048, Peoples R China;China Agr Machinery Testing Ctr, Beijing 100122, Peoples R China;China Agr Univ, Coll Engn, Natl Ctr Int Res BioEnergy Sci & Technol, Beijing 100083, Peoples R China;Chinese Acad Agr Engn, Beijing 100125, Peoples R China;Key Lab Clean Prod & Utilizat Renewable Energy, Beijing 100083, Peoples R China

Desmodesmus sp.;microalgae;pyrolyzed products;pyrolysis temperature;bio-oil;BIO-OIL PRODUCTION;CATALYTIC PYROLYSIS;LAKE BLOOMS;BIOMASS;TEMPERATURE;FUELS;ALGAE;YIELD

Pyrolysis-Gas Chromatography-Mass Spectrometry (Py-GC/MS) was adopted to determine the changes in component of BG11-cultivated Desmodesmus sp. (BG11/8-10) pyrolyzed products at different temperatures (300 degrees C-800 degrees C). The results of analysis on a series of total ions chromatogram (TIC) showed that pyrolyzed products of BG11/8-10 at different temperature mainly included aliphatic hydrocarbons, nitrogen compounds, aromatic hydrocarbons, fatty acids, ketones, alcohols, aldehydes and furan compounds. Compared to the bio-oil (42.36%) generated by pyrolysis at 700 degrees C, the relative content of bio-oil generated at 800 degrees C was the highest up to 56.96%. However, higher temperature could easily cause the generation of large quantities of such pollutants as nitrogen compounds and polycyclic aromatic hydrocarbons (PAHs). Therefore, based on lower pollutant discharge and higher bio-oil yield, the optimal pyrolysis temperature of BG11/8-10 was around 700 degrees C.