Nashrieh Shimi va Mohandesi Shimi Iran

Nashrieh Shimi va Mohandesi Shimi Iran

Bio-crude production through hydrothermal liquefaction of nannochloropsis microalgae via activated carbon-based catalysts

Document Type : Research Article

Authors
Komeil Kohansal
Mohammad Salimi
Soha Samakchi
Ahmad Tavasoli
Ali Bozorg
School of Chemistry, College of Science, University of Tehran, Tehran, IRAN
Abstract
In this present study, in order to achieve the high feedstock conversion and maximum yield of bio-crude, the operational parameters of Nannochloropsis sp. microalgae hydrothermal liquefaction process such as temperature(270-310-350ºC), residence time (20-40-60 min) and feedstock ratio percentage (5-10-15 wt%) have been appropriately evaluated .Thereafter, three different activated carbon based catalysts (Co/AC, Zn/AC, Co-Zn/AC) have been manufactured. Catalytic experiments have been carried out on the obtained optimum condition of the HTL process. It has been proved by CHNS and GC-MS results that existence of all three different catalysts has a positive effect on quality and quantity of derived bio-crude, however, because of synergetic effect of Cobalt and Zinc in the bimetallic catalyst, hydrocarbon percentage which is the most favorable portion of achieved bio-crude was increased dramatically. Not only that, but higher mass content of microalgae devoted to bio-crude production (40.12 wt.%) alongside with lower gas and hydrochar percentage.
Keywords
Hydrothermal liquefaction
Activated carbon
Microalgae
Nannochloropsis

Subjects

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