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Potassium Hydrogen Phthalate Abatement by Activated Persulfate in ZVI-PS Systems
Water, Air, & Soil Pollution ( IF 1.900 ) Pub Date : 2020-05-07 , DOI: 10.1007/s11270-020-04621-y
Jing Xue, Mo Chen, Min Wang

The advanced oxidation process based on sulfate radicals (SO4.−) is one of the most promising wastewater treatment technologies. In this study, we utilized potassium hydrogen phthalate (KHP) as an organic pollutant to configure simulated wastewater that was then treated by activation of sodium persulfate (PS) by zero-valent iron (ZVI) to produce SO4.−. Our results showed that the ZVI-PS system had a greater degradation rate in acidic, neutral, and weakly alkaline solutions compared with the Fenton method. After 180 min of reaction time under the experimental conditions (pH = 3.0, temperature = 20 °C, ZVI = 3.57 mM, and PS = 2.52 mM), chemical oxygen demand (COD) was 53.72%, indicating that these reaction conditions were optimal for COD degradation. This reaction was described by the kinetic rate Eqs. Y = K1X + b (0–10 min) and Y = C + B X + K2X2 (30–180 min) within the above experimental conditions. The results of this study showed that the ZVI-PS system may be an interesting alternative for the treatment of organic pollutants.
更新日期:2020-05-07

 

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