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Five heterogeneous and two alkaline catalysts were applied into the hydrothermal liquefaction (HTL) of Chlorella pyrenoidosa, a low-lipid microalgal species. The effects of catalysts on the bio-crude oil yield were more substantial at 280 ºC (bio-crude oil yield was increased by 10 %) than at 240 ºC although bio-crude oil formation had already occurred at the low temperature. At 240 ºC, additions...
Direct hydrothermal liquefaction of biomass is a technology that has shown promising results in treating waste and producing oil. A batch hydrothermal liquefaction system was used to treat swine manure, and it successfully converted up to 70% of swine manure volatile solids into oil and reduced manure chemical oxygen demand by up to 75% (He et al., Trans ASAE 43(6):1827–1833, 2000). A continuous-flow...
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