Simultaneous removal of SO2 and NO by FeII(EDTA) solution: promotion of Mn powder and mechanism of reduction

Duo, Yankai; Wang, Xiaoping; He, Jinjia; Zhang, Shihan; Pan, Hua; Chen, Jianmeng; Chen, Jun

doi:10.1007/s11356-019-06067-0

Cited by 10 publications

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the first stage of OAM (oxidation), many researchers have investigated the oxidation effect of NO. Many oxidants have been used to oxidize NO, such as Fe (II) EDTA [1][2][3], NaClO 2 [4][5][6], and NaClO [7,8]. The oxidation of the above methods has ideal effects, but the products will cause secondary pollution.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Removal of SO2 and NO by O3 Oxidation Combined with Seawater as Absorbent

Wang

2022

Processes

View full text Add to dashboard Cite

Aiming at NOx (NO 90%, NO2 10%) and SO2 in simulated vessel emissions, denitration and desulfurization were studied through ozone oxidation combined with seawater as absorbent. Specifically, the different influencing factors of denitration and desulfurization were analyzed. The results indicated that the oxidation efficiency of NO can reach over 90% when the molar ratio of O3/NO is 1.2. Ozone oxidation and seawater washing in the same unit can decrease the temperature of ozone oxidation of NO, avoid high temperature ozone decomposition, and enhance the oxidation efficiency of NO. When NO inlet initial concentration is lower than 800 ppm, the NOx removal efficiency can be improved by increasing NO inlet concentration, and when NO inlet initial concentration is greater than 800 ppm, increasing the concentration of NO would decrease the NOx removal efficiency. Increasing the inlet concentration of SO2 has minor effect on desulfurization, but slightly reduces the absorption efficiency of NOx due to the competition of SO2 and NOx in the absorption solution. Besides, final products (NO2−, NO3−, SO32−, and SO42−) were analyzed by the ion chromatography.

show abstract