Methods used to Produce Hydrogen
This is achieved by a process known as steam reformation where methane is subjected to steam injection to produce carbon monoxide and Hydrogen. The carbon monoxide is removed after which the hydrogen is isolated. The majority of hydrogen produced today is processed using this method
In this process water (H2O) is broken down into oxygen (O2) and Hydrogen gas (H2) This is achieved by passing an electric current through the water via an anode and cathode usually of platinum or stainless steel all contained within an electric cell.
Electrolysis is one of the most expensive methods of hydrogen production, as to achieve a worthwhile output of hydrogen excess electrical current must be passed through the cell, to increase potential energy.
There are several methods of producing hydrogen gas from biological processes,
Dark fermentation entails the anaerobic fermenting of organic waste converting bacteria into hydrogen gas.
Photo fermentation uses light to break down the bacteria into fatty acids from which hydrogen is isolated and extracted.
The hydrogen is produced in a bioreactor from various feed stocks including wastes and algae; the method using algae will be explored fully in the next section.