[en] The nitric acid industry in the Netherlands is a major industrial source of nitrous oxide (N2O), an important contributor to the greenhouse effect. The project aims at determining the feasibility of the use of a catalyst developed by ECN for the direct decomposition of N2O and the Selective Catalytic Reduction (SCR) of N2O with natural gas in the off gas of a nitric acid plant. For plants with a tail gas temperature of at least 400C in front of the expander, direct decomposition is an economic option (from NLG 1 per ton CO2 equivalents removed). For plants with a temperature below 400C in front of the expander, SCR using natural gas can be used. More economic, however, is end-of-pipe SCR of N2O using 500 ppmv LPG (upwards of NLG 3 per ton CO2 equivalents removed). 9 refs