| Literature DB >> 30551042 |
J D Marin-Batista1, J A Villamil1, J J Rodriguez1, A F Mohedano1, M A de la Rubia2.
Abstract
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.Entities:
Keywords: Anaerobic digestion; Energy recovery; Hydrochar; Hydrothermal carbonization; Microalgae
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Year: 2018 PMID： 30551042 DOI： 10.1016/j.biortech.2018.11.103
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642