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Enhanced methane production in microbial electrolysis cell coupled anaerobic digestion system with MXene accelerants.
- Source :
-
Bioresource technology [Bioresour Technol] 2023 Jul; Vol. 380, pp. 129089. Date of Electronic Publication: 2023 Apr 26. - Publication Year :
- 2023
-
Abstract
- Accelerants can improve the anaerobic performance of a microbial electrolysis cell coupled anaerobic digestion (MEC-AD). MAX phase titanium aluminum carbide (MAX), multilayer Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript>X</subscript> MXene (ML-MXene) and few-layer Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript>X</subscript> MXene (FL-MXene) were utilized as accelerants for MEC-AD to promote CH <subscript>4</subscript> production and CO <subscript>2</subscript> reduction at a voltage of 0.6 V. The highest CH <subscript>4</subscript> yield (358.7 mL/g VS) and the lowest CO <subscript>2</subscript> yield (57.4 mL/g VS) relative to the control group (170.6 and 125.1 mL/g VS) were obtained in MEC-AD with ML-MXene (0.035 wt%). The digestates of MEC-AD with 0.035 wt% ML-MXene have superior thermal stability (40.9%) and total nutrient content (42.1 g/kg). The ML-MXene enhanced the abundances of Methanosarcina and Methanobacterium. This work highlights the possible role of MXene in promoting methanogenesis. These important findings provide a novel avenue for the development of MXene accelerants for MEC-AD systems.<br />Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2023 Elsevier Ltd. All rights reserved.)
- Subjects :
- Anaerobiosis
Bioreactors microbiology
Electrolysis
Carbon Dioxide
Methane
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 380
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 37116623
- Full Text :
- https://doi.org/10.1016/j.biortech.2023.129089