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. In 2020, the European Commission proposed the "RENURE" criteria to allow the safe use of recovered nitrogen from manure as a replacement for chemical fertilisers. Ammonium salts recovered from manure through a stripping and scrubbing process are proposed as a priority of RENURE products. The obtained ammonium salts are slightly acidic, containing 100% mineral N without organic particles. Nitrogen concentration varies based on process conditions and efficiency. Field tests in 2022 indicated a comparable performance of the recovered ammonium nitrate as artificial fertilisers in terms of effectiveness and fertilising value.
Hongzhen Luo (2024) studied this question.