ef7b03144_si_001.pdf (176.68 kB)
Metals and Other Elements in Biocrude from Fast and Isothermal Hydrothermal Liquefaction of Microalgae
journal contribution
posted on 2017-11-17, 19:51 authored by Jimeng Jiang, Phillip. E. SavageWe determined the
effects of different hydrothermal liquefaction
(HTL) process variables (temperature, holding time, algae loading,
and water loading) on 13 different elements in biocrude and the aqueous
phase co-product. Reaction conditions included both fast and isothermal
HTL. The concentrations of P, Mg, Na, and Ca in the biocrude had their
highest values at the mildest HTL conditions explored, and the concentrations
decreased precipitously as even moderate HTL conditions were used.
The concentrations of Zn, Cu, and Ni do not show much variation with
HTL severity, whereas the concentration of Fe in the biocrude first
increases and then decreases. P and Na were the most abundant elements
in the biocrude from fast HTL, but Fe was the most abundant from isothermal
HTL. These results show that the HTL conditions can influence the
concentrations of different metals and inorganic species in algal
biocrude from HTL.