They are found mostly in anaerobic freshwater environments, such as lake sediments and the digestive tracts of animals. In these habitats, methanogens play an important role in the degradation of complex organic compounds. Methanogens are also found in extreme environments such as hydrothermal vents, where they thrive at temperatures above 100ºC and produce methane. About half is reoxidized by methanotrophic bacteria, but most of the rest escapes to the atmosphere, where it is a potent greenhouse gas.
Methanogens are made primarily in two shapes, cocci and rods. Can also be found having a plate like structure Have unique enzymes and cofacters The top image shows a plated methonogen, the bottom image shows a cluster of cocci methanogens.
These are found living in such anerobic environments as
• the muck of swamps and marshes;
• the rumen of cattle (where they live on the hydrogen and CO2 produced by other microbes living along with them);
• sewage sludge;
• the gut of termites.
They are chemoautotrophs; using hydrogen as a source of electrons for reducing carbon dioxide to food and giving off methane ("marsh gas", CH4 ) as a by-product.
In this reaction, the electron donor is hydrogen, and carbon dioxide serves as the electron acceptor. What would happen if these bacteria did not occur? Organic acids and alcohols would accumulate. The organisms would drown in their own wastes. Many would stop growing or die.
In experiments at Regensburg University nutrients were used to the provide a medium for methanogens which were heated until they began their own cultivation propagating themselves rapidly into the required quantities. It was not necessary to add more nutrients or more methanogens at any stage. Methanogenesis proceeded only while both CO2 and H2 were present.
The above application to existing power generation can only lead to the aspirations of the participants at COP21 being successfully realised and achieved while no alternative effective means currently exists.
It is important to regard the CO2 Recycled Process, not as a stand-alone system, but as one part of an add-on composite system incorporating existing power stations already utilising inefficient wasteful Life-Destroying costly processes enabling them to become economically improved as well as enhancing Humanitarian conditions and prospects.
The Effective Equation is:
In other words CO2 Recycled Process takes CO2 to Clean Energy Synergy between Gasified Power Station and CO2 Recycled Processes. In order to recycle CO2 emissions to CH4 both CO2 & H2 are needed with methanogens kept under the conditions maintained by the invention. The gasification power station processes produce H2 and O2 (and CO2), and the CO2 Recycled Processes produce CH4 and O2. The H2 & CO2 allow CH4 to be regenerated and re-used as input fuel replacing new fossil-fuels use; the O2 produced in both processes enhance re-burning without ingress of Nitrogen or Sulphur – eliminating Nox and Sox pollutants.