| Autor: |
Xu, Xin, Yin, Ying, Chi, Zifang |
| Předmět: |
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| Zdroj: |
Environmental Science & Pollution Research; Nov2024, Vol. 31 Issue 54, p63136-63144, 9p |
| Abstrakt: |
Trivalent iron (Fe3+) could participate in methane (CH4) oxidation as an electron acceptor under anaerobic conditions, but the kinetic process remains unknown in landfills, and the understanding of metabolic pathway of Fe3+-dependent anaerobic methane oxidation (Fe-DAMO) is still limited. In this study, the dual-substrate (CH4-Fe3+) kinetic model of CH4 oxidation is obtained with Vmax (7.35 ± 0.4184)μmol/(kg d), half-saturation constant K m , CH 4 (16.6699 ± 2.3940)ppmv, and K m , Fe 3 + (0.00107 ± 0.0002g/g). Microbial community analysis shows that Methanobacteriales and Clostridia are dominant microorganisms of Fe-DAMO. PICRUSt analysis confirms that the metabolic pathway of AMO is the reverse CH4 production pathway. The results provide a new perspective for CH4 biodegradation in landfills and offer a better understanding of Fe-DAMO process. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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