The variability of the optimum initial pressure and reaction time reported in the literature is clearly a reflection of the dependence of the pressure and reaction time on the peculiar reactor design and performance. However, variations in the optimum initial reactor pressure and reaction time were observed in the literature. , and Jindal and Jha reported optimal target temperatures of 300☌, 295☌, and 280☌ respectively. Previous hydrothermal liquefaction studies demonstrated maximum biocrude production at temperatures close to 290☌. A review of the literature suggests that the experimentally determined optimal target temperature for the maximum biocrude yield from the high moisture digestate in this chapter is similar to the optimal target temperature conditions reported in most previous studies in the literature. (10.30) and applying the optimization module of the Minitab software, the target temperature, reaction time (inclusive of holding time), and initial pressure for the maximum biocrude yield have been determined to be 290☌, 83 min (inclusive of heating time), and 5 MPa, respectively. Using the fitted relations presented in Eq.
John Birch, in Advances in Eco-Fuels for a Sustainable Environment, 2019 10.4.2 The operating conditions for a maximum biocrude yield
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