| Title |
Managing dissolved methane gas in anaerobic effluents using microbial resource management-based strategies |
| ID_Doc |
26736 |
| Authors |
Gupta, V; Goel, R |
| Title |
Managing dissolved methane gas in anaerobic effluents using microbial resource management-based strategies |
| Year |
2019 |
| Published |
|
| DOI |
10.1016/j.biortech.2019.121601 |
| Abstract |
This study reports the findings of three independent microbial resource management-based strategies to manage dissolved methane (D-CH4) gas in anaerobic effluents. In the first approach, an aerobic methanotroph Methylococcus capsulatus was immobilized. A maximum of 1.75 kg COD m(-3) d(-1) at a hydraulic retention time of 0.5 h was recorded in the attached growth aerobic methane oxidizing reactor. In the second strategy, denitrifying methane oxidizing organisms (DAMO) were first enriched in a lab-scale batch reactor which enabled a maximum methane oxidation rate of 0.31 kg CODm(-3) d(-1). In the last strategy, a mixed community of aerobic ammonia oxidizers was immobilized on sponge carriers and used to convert the D-CH4 gas into useful biofuel methanol at a rate of 0.73 kg CODm(-3) d(-1) equivalent of COD with a methanol production of 31.5 g CODm(-3) d(-1). On a COD basis, the amount of methanol generated could denitrify nearly 7 mg L-1 of NO3-N. |
| Author Keywords |
Anaerobic digestion; Dissolved methane; Bioengineered system; Circular economy; DAMO; Ammonia-oxidizing bacteria |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000475746800078 |
| WoS Category |
Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels |
| Research Area |
Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels |
| PDF |
http://manuscript.elsevier.com/S0960852419308314/pdf/S0960852419308314.pdf
|