Valorization of microalgal biomass by hydrothermal carbonization and anaerobic digestion
EntityUAM. Departamento de Ingeniería Química
10.1016/j.biortech.2018.11.103Bioresource Technology 274 (2019): 395-402
Funded byThe authors wish to express their gratitude to Spain’s MINECO (CTM2016-76564-R and 449 RYC-2013-12549) for funding this work
ProjectGobierno de España. CTM2016-76564-R
SubjectsAnaerobic digestion; Energy recovery; Hydrochar; Hydrothermal carbonization; Microalgae; Química
Rights© 2018 Elsevier Ltd.
Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
The potential of hydrothermal carbonization (HTC) as a novel choice for treating microalgal biomass (MAB) was assessed. The hydrochar obtained at 210 °C had a carbon content and a higher heating value (HHV) 1.09 and 1.1 times greater, respectively, than that of the feedstock. Also, washing the hydrochar with HCl efficiently removed ash and increased its carbon content 1.40-fold. Energy recovery in the liquid fraction from the hydrothermal treatment (LF) by anaerobic digestion (AD) allowed methane yields of 188–356 mL STP CH4 g−1 VSadded, to be obtained. As a result, the amount of energy recovered from MAB was increased from about 4 MJ kg−1 (20% in terms of HHV) to 15.4, 12.1 and 10.4 MJ kg−1 by combining HTC at 180, 210 and 240 °C, respectively, with AD. Therefore, HTC at 180 °C in combination with AD seemingly provides an effective method for valorizing MAB
Google Scholar:Marin-Batista, J. D. - Villamil, J. A. - Rodriguez, J. J. - Mohedano, A. F. - Rubia Romero, María de los Ángeles de la
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