The use of advanced oxidation processes (AOPs) to integrate flue gas treatments for SO₂, NO_x and Hg⁰ into a single process unit is rapidly gaining research attention. AOPs are processes that rely on the generation of mainly the hydroxyl radical. This work evaluates the effectiveness of the simultaneous removal of NO and SO₂ from flue gas utilizing AOP induced by the combined heat and Fe²⁺ activation of aqueous persulfate, and elucidates the reaction pathways. The results indicated that both SO₂ in the flue gas and Fe²⁺ in solution improved NO removal, while the SO₂ is almost completely removed. Increased temperature led to increase in NO removal in the absence and presence of both Fe²⁺ and SO₂, and in the absence of either SO₂ or Fe²⁺, but the enhanced NO removal due to the presence of SO₂ alone dominated at all temperatures. The removal of NO increased from 77.5% at 30 °C to 80.5% and 82.3% at 50 °C and 70 °C in the presence of SO₂ alone, and from 35.3% to 62.7% and 81.2%, respectively, in the presence of Fe²⁺ alone. However, in the presence of both SO₂ and Fe²⁺, NO conversion is 46.2% at 30 °C, increased only slightly to 48.2% at 50 °C; but sharply increased to 78.7% at 70 °C compared to 63.9% for persulfate-only activation. Results suggest NO removal in the presence of SO₂ is equally effective by heat-only or heat-Fe²⁺ activation as the temperature increases. The results should be useful for future developments of advanced oxidation processes for flue gas treatments.

使用高级氧化工艺（AOP）将SO ₂，NO _x和Hg ^0的烟道气处理集成到单个处理单元中正迅速引起研究关注。AOP是主要依赖于羟基自由基生成的过程。这项工作评估了利用由过硫酸盐水溶液的热和Fe ²⁺活化结合产生的AOP从烟气中同时去除NO和SO ₂的有效性，并阐明了反应途径。结果表明，烟道气中的SO ₂和溶液中的Fe ²⁺均能改善NO的去除，而SO ₂被几乎完全删除。温度升高导致在不存在和同时存在Fe ²⁺和SO ₂以及不存在SO ₂或Fe ²⁺的情况下，NO去除量增加，但由于仅存在SO ₂，NO去除量增加。所有温度。在单独存在SO ₂的情况下，NO的去除率从30°C时的77.5％增至50°C和70°C时的80.5％和82.3％，在存在SO ₂的情况下分别从35.3％增至62.7％和81.2％。单独的Fe ²⁺。但是，在同时存在SO ₂和Fe ^{2+的情况下}在30°C下，NO转化率为46.2％，在50°C下仅略增至48.2％；但在70°C时急剧增加至78.7％，而仅过硫酸盐的活化为63.9％。结果表明，随着温度的升高，仅加热或加热Fe ²⁺活化在SO ₂存在下的NO去除同样有效。该结果对于烟气处理高级氧化工艺的未来发展应是有用的。