Details zur Publikation
Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.3389/fceng.2021.652445
Lizenz creative commons licence
Titel (primär) Microbial electrochemical oxidation of anaerobic digestion effluent from treating HTC process water
Autor Dai, S.; Korth, B. ORCID logo ; Vogt, C.; Harnisch, F. ORCID logo
Quelle Frontiers in Chemical Engineering
Erscheinungsjahr 2021
Department ISOBIO; UMB
Band/Volume 3
Seite von art. 652445
Sprache englisch
Topic T7 Bioeconomy
Supplements https://www.frontiersin.org/articles/10.3389/fceng.2021.652445/full#supplementary-material
Keywords Microbial electrochemical technologies; wastewater treatment; Electroactive microorganisms; microbial electrochemistry; Microbial fuel cell
Abstract Hydrothermal carbonization (HTC) is a promising technology for chemical and material synthesis. However, HTC produces not only valuable solid coal-like materials, but also yields process water (PW) with high chemical oxygen demand (COD) that requires extensive treatment. Anaerobic digestion (AD) has been used for initial treatment of HTC-PW, but the AD effluent is still high in COD and particles. Here, we show that microbial electrochemical technologies (MET) can be applied for COD removal from AD effluent of HTC-PW. Bioelectrochemical systems (BES) treating different shares of AD effluent from HTC-PW exhibited similar trends for current production. Thereby, maximum current densities of 0.24 mA cm-2 and COD removal of 65.4±4.4% were reached (n=3). Microbial community analysis showed that the genus Geobacter dominated anode biofilm and liquid phase of all reactors indicating its central role for COD oxidation and current generation.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24176
Dai, S., Korth, B., Vogt, C., Harnisch, F. (2021):
Microbial electrochemical oxidation of anaerobic digestion effluent from treating HTC process water
Front. Chem. Eng. 3 , art. 652445 10.3389/fceng.2021.652445