Base-activated Sodium Persulfate Degrades 1,1,1-trichloroethane in Groundwater

Xuanran Zhao ； Shuguang Lu ； Zhu Liu ； Xiao Yuan

《International Core Journal of Engineering》 10卷4期 (2024/04) Pp. 127-136

https://doi.org/10.6919/ICJE.202404_10(4).0016

摘要

This paper studied the effect of 1,1,1-trichloroethane(TCA) in base-activated sodium persulfate(NaOH/SPS), investigated the effects of NaOH/SPS, initial pollutant concentration, oxidant dosage, and chloride release during the reaction, and deduced the degradation route of TCA in base-activated SPS system by chemical probe and radical cleaning, and verified the contribution in the degradation process of TCA. The results show that the base-activated SPS system can effectively degrade TCA in an aqueous solution, and the degradation rate and removal rate of TCA increase with the increase of NaOH/SPS molar ratio; HO． plays a main role in the degradation of TCA; under the base-activated SPS system, the overall dechlorination performance of TCA is good.

關鍵字

Sodium Persulfate ； 1,1,1-trichloroethane ； Base-activated ； Groundwater ； Influencing Factors

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