In this work, the removal of dilute nitrogen oxides NO_x from the gaseous effluents of Tunisian nitric acid plant by absorption into aqueous hydrogen peroxide solutions containing or not nitric acid was studied. All semi-continuous absorption tests were carried out at ambient conditions and at 40 Pa as NO_x partial pressure. The effects of the gas flow rate, the initial H₂O₂ concentration and the presence of HNO₃ on the NO_x absorption efficiency (A_NOx) were studied. The tests results revealed that A_NOx increases with an increase in initial H₂O₂ concentration in the scrubbing liquid, but decreases with an increase of gas flow rate. Furthermore, the presence of nitric acid in the aqueous hydrogen peroxide solution has a positive effect on A_NOx. These results confirmed that the removal of NO_x liberated from the plants of the Tunisian Chemical Group (TCG) by absorption into H₂O₂ solution is a feasible and an effective solution.

在这项工作中，稀的氮氧化物的NO除去_X从突尼斯硝酸厂的气态流出物通过吸收到含有或不硝酸进行了研究过氧化氢水溶液。所有半连续吸收测试均在环境条件下以40 _x NO _x分压进行。气体流速，初始H的影响₂ ö ₂浓度和HNO的存在₃上使NO _X的吸收效率（A _{NO X}进行了研究）。试验结果表明，随着初始H ₂ O ₂的增加，_{NO x}升高。在洗涤液中的浓度，但随着气体流速的增加而降低。此外，过氧化氢水溶液中硝酸的存在对A _{NO x}具有积极作用。这些结果证实，通过吸收到H ₂ O ₂溶液中除去从突尼斯化学集团（TCG）的植物中释放的NO _x是可行和有效的解决方案。