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• Bioenergy: Risks to food-, energy- and environmental security

  121-130

  József Popp

  Mónika Harangi-Rákos

  Károly Pető

  Adrian Nagy

  Views:

  256

  There are growing opportunities and demands for the use of biomass to provide additional renewables, energy for heat, power and fuel, pharmaceuticals and green chemical feedstocks. However, the worldwide potential of bioenergy is limited, because all land is multifunctional, and land is also needed for food, feed, timber and fiber production, and for nature conservation and climate protection. The recent expansion of the bioenergy industries together with a strong increase in many commodity prices has raised concerns over the land use choices between energy needs and food and feed. New systems of energy production must be developed based on cost of environmental damage due to production and use of fossil energy and certain chemicals and materials. This article presents risks to food and energy security, estimates of bioenergy potential and the challenges of the environmental and social impact associated with expansions in bioenergy production.

• The possibilities of energetic applicability and economic evaluation of grape in the Szentantalfa township

  25-32

  József Brazsil

  Gábor Pintér

  Mihály Veszelka

  Views:

  127

  Energy production has become one of the key problems in the recent years. Hungary is lacking fossil fuels, but could play a leading role of biomass utilization in Europe. In the concept of biomass not only main-, but by-products (e.g. grape) are be included. Since farmers face a variety of difficulties in disposing of garpe from plantation sites it would be beneficial to encourage grape use in energy production. In our opinion due to varying transportation costs it is crucial to investigate the amount of potentially usable grape both for the whole country and in local township levels. Our economic studies were done on the Szentantalfa Township’s Balatonfüred-Csopak Vine Region. According to our findings the total amount of grape generated in the township theoretically amounts to 5.28 TJ exploitable that would operate a 360 kW boiler for a whole heating period (6 months). In our opinion the appearance of local energy production based on grape could significantly raise the ability of the future potential income of townships.