[en] During the last 15 years, biogas technology has developed drastically. From being a method to stabilize sludge from sewage disposal plants, biogas technology today is being applied in such areas as treatment of organic waste from industries and households, energy from domestic animal manure and energy crops as well as return of nutrients to agricultural soil. There are 18 major plants in Denmark (0.3-2.0 million m³ gas/hear) and the same number of plants on farms (<100,000 m³ gas/year). (au)

No abstract available

[en] Short communication

No abstract available

[en] For the four biogas plants balance sheets have been prepared to show the operating results. Operating income and cost are a mixture of actual accounts, estimates, and calculations. The results are shown both with and without taxes. Only one of the four plants can present a positive result before tax. Three of the plants, however, have positive results after tax. This stresses the importance of the fact that the part of the energy production that is used on the farm is not taxed. The analyses show that one of the plants in 1992 obtained an income, that makes it feasible to assume that the plant would be profitable provided in gets 30% of investment subsidy. An important condition for this is a relatively high gas yield which hardly can be obtained by digesting manures alone. Some of the most important unsolved problems of farm-based biogas plants are the missing possibilities of selling heat, the operating reliability, and the repair costs for generators. (LN)

[en] Having received the Final Commissioning Protocol from the Ministry of Agriculture, Rural Development, Environment and Energy of the Extremadura Regional Government, Ence’s biomass generation plant in Mérida started to deliver energy to the electrical system in April 2014. With the construction and commissioning of the Sener turnkey project for the biomass plant having been completed, Ence - the engineering and technology group – set up the company Biomasa Mérida O&M S.L. to provide operation and maintenance works for the facility’s first two years of operation. Following signature of the provisional acceptance of the plant by Ence, Biomasa Mérida O&M S.L. accepted its mission and started work on 15 September 2014. (Author)

[en] A short description of the function of an installation set up in connection with Fangel Biomass conversion plant (Denmark) in order to reduce odor emitted from the system illustrated by two diagrams. (AB)

[en] Biomass has been used as a fuel source for centuries, but mainly in the production of low grade heat. However, it can be used as a fuel for power generation, a particular advantage for remote rural areas rich in agricultural wastes but with weak or no grid connection as it avoids the need for importing fossil fuels. Likewise factories producing suitable such wastes, i.e. sugar mills and paper mills, have the possibility of reducing their energy bills by replacing the fossil fuels used to produce process steam and imported electricity with an on-site co-generation scheme

[en] The kinetics of the homogenization process was studied in three types of bioreactors by the use of radioactive tracers. The received data was interpreted on the base of a mathematical model and conclusions were made about the qualities of the investigated reactors. On the base of the received information the technological regime of the reactor can be optimized

[en] Short communication