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A good practice on energy recovery techniques by Pilze-Nagy (Hungary), a project partner of AGRIFORVALOR

First Hungarian biogas plant utilising the waste materials of oyster mushroom production

Published on 19-07-2016 10:57:05 by AGRIFORVALOR

CakePHP Under the slogan “Don’t waste your waste!” the INTERREG IVC project Waste 2 Energy (W2E) was, amongst other, looking for good practices on energy recovery techniques from waste and sustainable waste practices.

One of the elected cases was the mushroom growing company Pilze-Nagy from Hungary. They created a great sideline to their normal daily business, namely an electric power plant fuelled by biogas. The biogas is made from mushroom scraps and used growing substrate that produces remarkable green power.

It is estimated that in the course of mushroom growing, an annual quantity of approximately three thousand tons of exhausted substrate is produced. Pilze-Nagy aimed to find an economic and simultaneously environment-friendly solution and use for the huge amount of waste produced during the mushroom growing process. Finally, they decided for the application of the biogas technology.

After positive results of the research and development work and a period, starting in June 2007, of initiating the project and constructing the biogas plant, the plant achieved its full capacity in October 2008.

 

How it works? The mushroom-biogas complex agrisystem

“In this complex mushroom growing agrisystem, biogas production and agricultural crop production work in close cooperation. All organic wastes from mushroom production (spent mushroom substrate) are utilized in a biogas plant in order to decrease the environmental footprint of the production and serve the sustainable environment. Generated energy (heat and electricity) can be returned to mushroom growing. The residue of biogas production is a valuable organic fertilizer, which can be applied to fields where the straw for mushroom substrate is grown. It is a good example of circular economy. Main materials (straw) are cycled, renewable energy production is involved, while fresh mushrooms are part of the healthy human diet and finally, value generation happens in each production step.” (Pilze-Nagy)

At the moment, the biogas plan produces 1,2 million cubic meter of biogas annually. For this, they use 7.000-9.000 tons of agricultural organic material in a year, coming from mushroom production, poultry manure and wastes from food industry.

For more information, visit the website: http://pleurotus.hu/biogaz