The output from an anerobic kitchen waste digester is mostly CH4, and CO2. If the methane is collected over water; algae/moss may use the CO2 to grow. Yet Oxygen is released ... which, together with methane, is a potent environment.
Will the oxygen, in this closed jar filled with water+algae+moss, recombine to form CO2 and H2O? Is there a means to prevent methane combining with oxygen released by the algae?