Production system and method of production for organic compound or microorganism

A method of production for a product selected from the group consisting of an organic compound and a microorganism, the method comprising:

• reacting a source gas comprising hydrogen and nitrogen in the presence of a ruthenium catalyst and a support, wherein said reacting occurs under conditions comprising a reaction temperature of 530° C. or lower and a reaction pressure of 3 MPa or lower, and wherein an ammonia-containing gas is synthesized;
• concentrating ammonia within the ammonia-containing gas to obtain liquid ammonia without obtaining ammonia water or adsorbing ammonia to an absorbent;
• premixing the ammonia-containing gas with a medium and recovering unreacted hydrogen and nitrogen therefrom, and recycling said unreacted hydrogen and nitrogen to repeat said reacting;
• and
• culturing a microorganism able to produce an organic compound using the liquid ammonia and the medium.