Why is hydrogen a good renewable fuel?
There are two main reasons. Hydrogen is renewable through the use of biomass (plant matter) and it is the most abundant element on the earth. It comprises more than 75 percent of the environment. However, hydrogen in nature exists primarily in combination with other elements. For hydrogen to be useful as a fuel, it must exist as free hydrogen (H2). Therefore, equipment that can reform hydrogen from biomass is very beneficial for the goal to use hydrogen as a renewable fuel. Further, hydrogens physical and chemical properties make it a good candidate for a fuel. It is the cleanest fuel available. At normal atmospheric conditions, hydrogen is a colorless and odorless gas. It is stable and coexists harmlessly with free oxygen until an input of energy drives the exothermic (heat releasing) reaction that forms water.
