Research Progress of Methanogens Methanogenic Metabolic Pathway and its Ecological Factors

Methanogens are important environmental microbial and play an important role in the nature of the carbon-cycling, its unique physiological characteristics and metabolic mechanisms make it play an indispensable role in environmental protection and energy field. At present, known methane biosynthesis has three pathways: acetic acid, H/CO2, methyl compound as the substrates generate methane through different reaction. Ecological factor affecting methanogens are mainly temperature, pH value, redox potential, etc. In this paper, we carry on analyzing the research progress of the methanogens species, its physiological characteristics, metabolic pathway, ecological factor and industrial application, and propose methods and the thinking of study to improve methane gas production by adjusting the ecological factor as the control factor.