HYDROGEN GAS PRODUCTION METHOD, HYDROGEN GAS PRODUCTION SYSTEM, AND HYDROGEN GAS AND METHANE PRODUCTION SYSTEM

摘要

The present invention pertains to a hydrogen gas production method comprising: a preparation step for preparing a reaction liquid containing organic matter, hydrogen-generating fermentative bacteria, and hydrogenotrophic methanogens; and a production step for fermenting the reaction liquid using the hydrogen-generating fermentative bacteria at a temperature at least 5°C above the activity peak temperature T of the hydrogenotrophic methanogens and producing hydrogen gas.