| 摘要 |
<p>A method for producing a nitrogenous fertilizer, in a first step of which method ammonia is extracted from a nitrogen-containing biogenous or industrial residual material. In a first embodiment, said ammonia is subsequently reacted with carbon dioxide to obtain a urea- based fertilizer. In a second embodiment, a first part of the ammonia is oxidized to nitrogen dioxide by reaction with oxygen in the presence of a noble metal catalyst and the nitrogen dioxide is reacted with water to obtain nitric acid, which is combined with a second part of the ammonia to produce an ammonium nitrate-based fertilizer. The use of ammonia extracted from a nitrogen-containing biogenous or industrial residual material for the preparation of a nitrogenous fertilizer according to the described method.</p> |
