The invention includes methods, apparatus, and systems for the conversion of hydrogen together with carbon dioxide or carbon monoxide to methane using a population of microbes and a defined liquid medium. The microbial population maintains the amount of nutrients in the liquid medium with a relative range without requiring replenishment of the nutrients. Methods and apparatus for enriching the microbial population are also described.
|C12P 5/02,C12N 1/20,C12M 1/00,C12M 1/34
|Published - 17 May 2022