Journal
BIORESOURCE TECHNOLOGY
Volume 380, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2023.129089
Keywords
Biogas yield; Direct interspecies electron transfer; Gene sequencing; Methane production; Electron exchange capacity
Ask authors/readers for more resources
Accelerants, such as MAX phase titanium aluminum carbide (MAX), multilayer Ti3C2TX MXene (ML-MXene), and few-layer Ti3C2TX MXene (FL-MXene), can improve the anaerobic performance of microbial electrolysis cell coupled anaerobic digestion (MEC-AD), promoting CH4 production and CO2 reduction. The highest CH4 yield (358.7 mL/g VS) and lowest CO2 yield (57.4 mL/g VS) were achieved with MEC-AD using 0.035 wt% ML-MXene. The digestates from MEC-AD with 0.035 wt% ML-MXene showed superior thermal stability (40.9%) and total nutrient content (42.1 g/kg), and the ML-MXene increased the abundances of Methanosarcina and Methanobacterium. These findings highlight the potential role of MXene in promoting methanogenesis and provide a new avenue for the development of MXene accelerants for MEC-AD systems.
Accelerants can improve the anaerobic performance of a microbial electrolysis cell coupled anaerobic digestion (MEC-AD). MAX phase titanium aluminum carbide (MAX), multilayer Ti3C2TX MXene (ML-MXene) and few-layer Ti3C2TX MXene (FL-MXene) were utilized as accelerants for MEC-AD to promote CH4 production and CO2 reduction at a voltage of 0.6 V. The highest CH4 yield (358.7 mL/g VS) and the lowest CO2 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available