Experimental study and economic feasibility analysis on the production of bio-oil by catalytic cracking of three kinds of microalgae
2020
Hu, Shuanhu | Barati, Bahram | Odey, Emmanuel Alepu | Wang, Shuang | Hu, Xun | Abomohra, Abd El-Fatah | Lakshmikandan, Manogaran | Yerkebulan, Mukhambet | Esakkimuthu, Sivakumar | Shang, Hao
Bio-oil from microalgae has attracted attention for its extraordinary raw material utilization advantages and environmentally friendly characteristics. In order to increase the renewable energy utilization efficiency of microalgae biomass, research on the production line of microalgae cultivation and pyrolysis is essential. In this study, three high lipid content microalgae strains, including Micractinium reisseri, Scenedesmus obliquus SAG276-10 and Scenedesmus obliquus FACHB-276, have been selected to examine their capacity for crude bio-oil production under different pyrolysis conditions. The calculation of economic feasibility showed that M. reisseri comprised the most efficient energy conversion among considered strains. Gas Chromatography-Mass Spectrometry (GC–MS) analysis revealed a significant difference in the composition of crude bio-oil produced by non-catalytic and catalytic pyrolysis. The application of HZSM-5 increased the hydrocarbon content of the M. reisseri and S. obliquus FACHB-276 and decreased the ether and ester content of S. obliquus SAG276-10 upon pyrolysis when compared with non-catalytic pyrolysis. Although the use of MCM-41 was detrimental to the formation of hydrocarbons and increased the content of nitrogen-containing compounds, the mixture of HZSM-5 and MCM-41 greatly elevated the hydrocarbon content of S. obliquus SAG276-10 and S. obliquus FACHB-276.
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