Dynamics of liquid-phase platform chemicals during the hydrothermal carbonization of lignocellulosic biomass. (September 2022)

• Record Type: Journal Article
• Authors: Gallifuoco, Alberto; Papa, Alessandro Antonio; Spera, Agata; Taglieri, Luca; Di Carlo, Andrea
• Is Part Of: Bioresource technology reports. Volume 19(2022)
• Publication Date: 2022-09
• Subjects: Lignocellulosic hydrothermal carbonization -- Integrated process -- Liquid-phase reaction dynamics -- Platform chemicals production and recovery; Biomass energy -- Periodicals; Biotransformation (Metabolism) -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Waste products as fuel -- Periodicals; Waste products as fuel; Organic wastes; Factory and trade waste; Biotransformation (Metabolism); Biomass energy; Agricultural wastes; Periodicals; Electronic journals; 662.88
• DOI: 10.1016/j.biteb.2022.101177
• Languages: English
• ISSNs: 2589-014X

Abstract

Abstract: This paper studies the dynamics of process waters from hydrothermal carbonization of lignocellulosic biomasses, exploring the production of platform chemicals via the autohydrolysis of raw materials. Isothermal (200 °C) batch reactions went up to 2 h at a 7/1 liquid/solid ratio treating three wooden residuals, silver fir, beech, and olive. The distribution of liquid-phase chemicals depends on the biomass strongly. The peak concentrations of chemicals (furfural, 5-hydroxymethylfurfural, and lactic, formic, propionic, levulinic, and acetic acids) occur within 60 min of reaction. Biomass to chemicals conversion is up to 13 % (60 % of the total dissolved organic carbon). Simple equations describe system dynamics (R 2 close to 0.99). UV and Vis optical density of the process waters monitors the reaction progress satisfactorily. The results foreshadow innovative process schemes for simultaneously converting biomass to energy and value products by recovering of furfurals during waste biomass hydrothermal carbonization. Graphical abstract: Unlabelled Image Highlights: Platform chemicals produced via lignocellulosic biomass uncatalyzed autohydrolysis Time-course of key compounds analyzed in short-time hydrothermal carbonization Simple equations agree with data and explain the dynamics of the target chemicals. A process more sustainable than the acid-catalyzed hydrolysis of pure substances Innovative HTC process schemes for the bulk-scale production of furfurals