Recherche pétrolière et gazière

Abstrait

Biogas and carbon dioxide recycling for renewable sources of energy and chemicals

Venko Beschkov

One of the most important reason of use of biomass as a renewable energy source is the fact that the present biomass is almost completely recyclable, as the released carbon dioxide by combustion is converted by the present vegetation by photosynthesis. A good example for this approach is the treatment of organic waste to produce biogas. The latter is one of the mostly used as a fuel but its application as a feed stock for chemicals is also considerable.
On the other hand the inevitable release of carbon dioxide could be remediated after its conversion into chemicals (e.g. synthesis gas. methanol, formic acid) and to fuel, like methane by chemical, electrochemical or biotechnological processes. There is an opportunity to use it in new fuel cell applications.
The present work summarizes the recent author results on biogas production from various raw materials and carbon dioxide recycling to chemicals, fuels and energy. Besides manure and pultry litter as feedstocks for biogas lignocellulosic residues are considered. Carbon dioxide recycling to organic products were tested under fuel cell conditions and electrolysis