Kurana is the first biorefinery project of its type in the world, where biogas and nutrient recovery is integrated with a bioethanol facility.

At the facility, byproducts left after the production of bioethanol are being mixed and supplemented by organic materials and digested for biogas.

The biogas is being utilized in cogeneration units and steam boilers.

A part of thermal energy and electricity is being used for technological process. Excess electricity and heat is sold to other industries and district heating.

http://www.kurana.it/en/biogas-green-energy/

The Allter Power Biogas plant is located in northern Poland and built in connection with a local ethanol plant. Since December 2011, the biogas plant has been producing environmental green energy by utilizing stillage, a waste product from the ethanol production, manure, beet pulp, and various types of vegetable wastes.

The biogas produced by the biogas plant is delivered to the ethanol plant where it is converted into heat and power and used for producing ethanol. An ethanol plant together with a biogas plant is a strong combination where the environmental impact of the ethanol plant will be significantly reduced.

http://allterpower.pl/pl/oferta/biogaz.html