Novel process for nitrite removal driven by S(IV): NO  absorption and reductive denitrification in smelting industry

In the typical wet flue gas denitration technology using sulfite solutions, the rapid free radical chain reaction of SO 3•− oxidation by O 2 is the main reason for the significant consumption of absorbents and inefficient denitration. The study utilizes L-ascorbic acid (VC) to inhibit the free radical chain reaction. VC combined with SO 3•− to form stable compounds, which hindered the oxidation of SO 3•− to SO 5 •− by O 2 , leading to an 80.7 mol % decrease in Na 2 SO 3 consumption by adding millimolar-level VC. Compared to the sulfite solution, the best denitration efficiency of the VC/Na 2 SO 3 mixture solution increased from 94.4 to 99.2 vol %, and the absorption time for absorption efficiency above 90 vol % was extended from 7 to 72 min. Additionally, a macro absorption model describing the rates of macro absorption was established based on various operating conditions.

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Novel process for nitrite removal driven by S(IV): NO absorption and reductive denitrification in smelting industry

Cited by 2 publications

References 30 publications

How do the occurrence patterns of potentially toxic elements (PTEs) control their release behaviours from Pb/Zn smelter contaminated soils?

How do the occurrence patterns of potentially toxic elements (PTEs) control their release behaviours from Pb/Zn smelter contaminated soils?

Utilizing l-Ascorbic Acid to Inhibit Adverse Oxidation and Enhance Denitration Efficiency during Sulfite Solution Absorption of NO₂: Mechanism and Process Parameters

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Novel process for nitrite removal driven by S(IV): NO absorption and reductive denitrification in smelting industry

Cited by 2 publications

References 30 publications

How do the occurrence patterns of potentially toxic elements (PTEs) control their release behaviours from Pb/Zn smelter contaminated soils?

How do the occurrence patterns of potentially toxic elements (PTEs) control their release behaviours from Pb/Zn smelter contaminated soils?

Utilizing l-Ascorbic Acid to Inhibit Adverse Oxidation and Enhance Denitration Efficiency during Sulfite Solution Absorption of NO2: Mechanism and Process Parameters

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Product

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Utilizing l-Ascorbic Acid to Inhibit Adverse Oxidation and Enhance Denitration Efficiency during Sulfite Solution Absorption of NO₂: Mechanism and Process Parameters