Study on the effects of trace metal elements on methane oxidation efficiency of microbial community
MA Haojuan
ZHANG Ruilin
ZHOU Yinbo
ZHAO Shuang
DUAN Chaosheng
CHU Shihai
Abstract：Metal elements in the environment have a certain impact on key transformation processes in microbial metabolic path-ways.In order to study the effect of trace metal elements on the metabolism of microorganisms,the methane-oxidizing bacterial communities were screened from nature,and four representative metal elements,Cu2+,Fe2+,Mn2+,and Zn2+were selected.The meth-ane oxidation laws of microbial communities under different mass concentration conditions were obtained through experiments.The research results showed that Cu2+and Fe2+had a significant impact on the methane oxidation efficiency of bacterial communities.When the mass concentration of Cu2+was 0.03 g/L,the bacterial communities achieved their best CH4 degradation effect,with the highest CH4 degradation amount reaching 33.43 mL within 6 days;compared with Cu2+,the effect of Fe2+was more significant,with the increase of Fe2+mass concentration(0-0.6 g/L),the methane oxidation efficiency of the microbial community was gradually en-hanced,and the amount of CH4 degradation could be significantly increased from 13.02 mL to 37.28 mL within 6 days;Mn2+and Zn2+had a weak effect on the methane degradation efficiency of the microbial communities.When the mass concentrations of the two ions were 0.003 and 0.010 g/L,respectively,they had the best promoting effect on the methane oxidation efficiency of microbial communities,and the methane oxidation ability was weakened by elevating or decreasing the concentrations.
Keywords：methane oxidation efficiencymethane-oxidizing bacteriametal elementmicrobial communitygas prevention and control
Publication Date：2025-12-20
Online Publishing Date：2025-12-29(First online date of this platform, not the publication date of the document)
Pages：9( 49-57 )