A method for removing trace sulfadiazine in water by using manganese sulfate and 2-picolinic acid to activate peroxyacetic acid
By activating peracetic acid with a homogeneous complex formed by manganese sulfate and 2-pyridinecarboxylic acid, the problem of low degradation efficiency of sulfadiazine in existing technologies is solved, achieving rapid, broad-spectrum, and low-cost removal of trace amounts of sulfadiazine in water. It is suitable for deep purification of drinking water, river water, seawater, and secondary effluent from sewage treatment plants.
CN122102358APending Publication Date: 2026-05-29HENAN NORMAL UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENAN NORMAL UNIV
- Filing Date
- 2026-04-25
- Publication Date
- 2026-05-29
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Figure CN122102358A_ABST
Abstract
The application discloses a method for removing trace sulfonamidochrysoidine in water by activating peracetic acid through complexation of manganese sulfate and 2-picolinic acid, wherein, (1) a homogeneous Mn(II)-PICA complex solution is prepared by mixing and stirring a manganese sulfate solution and a 2-picolinic acid solution; (2) peracetic acid solution and the homogeneous Mn(II)-PICA complex solution are added into water containing sulfonamidochrysoidine, and the mixture is fully stirred, and in the reaction process, high-valence manganese active species Mn(V)=O is generated; the system mainly adopts a non-radical oxidation path, has high selectivity to sulfonamidochrysoidine, and realizes degradation of the sulfonamidochrysoidine. The method has high activation efficiency and fast degradation speed, and the complex system significantly improves the activation efficiency of PAA, and the removal rate of sulfonamidochrysoidine can reach more than 90 % within 10 min, which is much higher than that of a single activation system.
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