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Demirkaya, Emre Cocero Alonso, María José Cantero Sposetti, Danilo Alberto 2025-01-07T09:46:18Z 2025-01-07T09:46:18Z 2024 The Journal of Supercritical Fluids, 2024, vol. 211, 106296 0896-8446 https://uvadoc.uva.es/handle/10324/73061 10.1016/j.supflu.2024.106296 106296 The Journal of Supercritical Fluids 211 Black liquor (BL) has valuable lignin and its derived compounds, which can be used for many purposes, such as polyol synthesis. Herein, we reveal polyols presence in depolymerized black liquor (DBL) and propose a fast and scalable approach to increase the yield of this fraction. Hydrothermal treatment (HTL) of black liquor (385°C, 26 MPa) was performed in a custom designed supercritical water (SCW) pilot-plant with rapid reaction times of around 0.4 s. Ash-free, total ethyl acetate extracted bio-oil yield was found 77% w/w. In addition to the contribution of the detailed fractionation methods, this study highlights continuous operation (>1 hour), and short reaction times (∼0.4 s) of raw black liquor in SCW to produce biopolyols and aromatic bio-oil. eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/4.0/ © 2024 The Authors Atribución-NoComercial 4.0 Internacional Supercritical water depolymerization of black liquor, refining and comprehensive analysis of products including biopolyols info:eu-repo/semantics/article