OG RENURE: Production of manure-derived ammonium salts through stripping and scrubbing process

RENURE aims to prepare the agricultural sector for the use of ammonium salt fertilisers (ammonium nitrate and ammonium sulphate) by making the transition from research-based field trials to a practical evaluation at the farmer's premises. Stripping and scrubbing as a market-ready, innovative technology makes it possible to recover ammonium salts from manure and use them as a priority of RENURE products.The process consists of two steps: • Stripping: air is blown into the first compartment to remove the gaseous ammonia that is released from the thin fraction of manure or digestate due to increased pH and/or temperature. • Scrubbing: the ammonia-rich air is sprayed with a strongly acidic solution, such as sulfuric acid or nitric acid, to form ammonium sulphate or nitrate, respectively. • The estimated price of the operational installation is approximately €100-150/m3. It requires an annual manure processing capacity of at least approximately 20,000 tons to achieve the desired economic viability.