Phases' characteristics of poultry litter hydrothermal carbonization under a range of process parameters. (November 2016)

• Record Type: Journal Article
• Authors: Mau, Vivian; Quance, Julie; Posmanik, Roy; Gross, Amit
• Is Part Of: Bioresource technology. Volume 219(2016)
• Page Start: 632
• Page End: 642
• Publication Date: 2016-11
• Subjects: Hydrothermal carbonization -- Solid fuel -- Liquid fertilizer -- Energy efficiency -- Gas emission; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2016.08.027
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Hydrochar produced at 250 °C resembles sub-bituminous coal. Liquid-phase's high nutrient level indicates possible use as fertilizer. CO2 is the main gaseous component, with presence of CH4 and H2 S. HTC was not affected by high solid-to-water ratio of up to 1:3. Energy balance favors HTC of sludge with high solids concentration. Abstract: The aim of this work was to study the hydrothermal carbonization of poultry litter under a range of process parameters. Experiments were conducted to investigate the effect of HTC of poultry litter under a range of operational parameters (temperature, reaction time, and solids concentration) on the formation and characteristics of its phases. Results showed production of a hydrochar with caloric value of 24.4 MJ/kg, similar to sub-bituminous coal. The gaseous phase consisted mainly of CO2 . However, significant amounts of H2 S dictate the need for (further) treatment. The process also produced an aqueous phase with chemical characteristics suggesting its possible use as a liquid fertilizer. Temperature had the most significant effect on processes and product formation. Solids concentration was not a significant factor once dilution effects were considered.