0000000000986363
AUTHOR
Yujie Fan
showing 2 related works from this author
Economic sustainability of hydrothermal liquefaction of sewage sludge: From a conceptual analysis to a practical verification
2022
Introduction: Hydrothermal liquefaction (HTL) could be a promising technology to produce biocrude from wet biomass. A conceptual analysis on the HTL of microalgae assisted by the use of solar heat demonstrated that even if microalgae are one of the most productive and investigated feedstock, their high cost hinders the economic sustainability of the process1. To overcome this issue a zero-cost wet waste biomass like sewage sludge (SS) could be adopted with comparable efficiency. Furthermore, the use of a proper catalyst, promoting the in-situ upgrading of the biocrude, still represents a big challenging opportunity for industrial HTL development. Aim: The outcomes of the conceptual analysis…
Comparative investigation on the value-added products obtained from continuous and batch hydrothermal liquefaction of sewage sludge
2022
Hydrothermal liquefaction (HTL) can be considered a promising route for the energy valorisation of waste sewage sludge (SS). However, not much information is available on continuous flow processing. In this study, the mixed SS was subjected to HTL at 350°C for 8 min in a continuous reactor with loadings of 10 wt% in the feed flow. The results show that the mass recovery reached 88%, with a biocrude yield of 30.8 wt% (3.9 wt% N content). The recovered biocrude yields are highly dependent on the selection of the recovery solvent for extraction, and dichloromethane can contribute an additional 3.1 wt% biocrude from aqueous phase, acetone can extract some pyrrole derivatives into the trapped ph…