Question

Reaction-wise how does methanogenesis differ from methanotropy? Why are these processes important?

Answer 1

Methanogenesis is the process of formation of methane by the microorganisms.The organism which involved in methanogenesis is known as methanogens.Methanogenesis is a form of anaerobic respiration means the organism do not use oxygen,and presence of oxygen inhibits the growth of the organisms.Carbon is used as terminal electron acceptor in methanogenesis process.

CO2 + 4 H2 → CH4 + 2 H2O

Methanotrophy is the process of utilisation of methane.The organisms utilise methane as their carbon source and they are called as methanotrophs.They utilise only methane as their sole carbon source for energy.Methanotrophic organisms metabolise (oxidise) methane and reduce an oxygen atom to H2O2 and convert methane to ethyl alcohol primarily with the help of methane monooxygenase enzyme.

Both process play important role in the environment.Methanogenesis is one of the dominant pathway for decomposition of organic compounds in many regions.As we know methane is one of the causative agent of global warming ,so by utilising the methane atmospheric methane level can be reduced with the help of Methanotrophy process.

Hope this helps you:)