On 3 October the bi-annual consortium meeting of the research project Nutrient Cycle Closure from Wastewater and Process Water (KNAP) took place. During the meeting, the first results from field trials on nitrogen-rich products and nitrogen emission measurements, including ammonia and nitrous oxide, were presented to the partners. These valuable insights will help optimise circular fertilisers for next year's field trials. In addition, the partners took time to consider potential contamination risks in the products.