The reported increase in biocrude yield with aqueous phase (AP) recirculation appears inconsistent with prior studies and lacks direct mechanistic validation. The energy recovery calculations seem overly optimistic, as they do not account for potential losses in downstream processing. Additionally, the data analysis and statistical validation require further scrutiny to ensure accuracy and reliability. I recommend that the authors address these issues to strengthen the study’s methodological rigor and enhance the clarity and credibility of its conclusions.
