Gerhard Soja: Bonechar from slaughterhouse residue – nutrient recycling from problematic substances

This case study shows how solid and liquid slaughterhouse residue can be turned into a fertilizer applicable in agriculture by combining pyrolysis and anaerobic fermentation, thus reducing the ammounts of mineral fertilizer required to add nitrogen and phosphorus. Gerhard Soja PhD is an environmental scientist with a focus on plant production, soil research and countering climate change. He graduated from both, the University of Natural Resources and Life Sciences, Vienna and the University for Continuing Education, Krems. He earned his habilitation in the field of “applied plant physiology”, has been deeply involved in founding and developing the Austrian Biomass Carbonisation Society (ÖBIKA) since 2020 and is currently its chairman.

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