Study on treating soil contained pyrene by high voltage pulsed dielectric barrier discharge

被引：0
|
作者：
Xu X. [1 ]
Qian Y. [2 ]
Zhang X. [1 ,2 ]
Lei L. [1 ,2 ]
机构：
[1] College of Chemical and Biological Engineering, Zhejiang University, Zhejiang, Hangzhou
[2] Institute of Zhejiang University-Quzhou, Zhejiang, Quzhou
来源：
Huagong Xuebao/CIESC Journal | 2022年 / 73卷 / 09期
关键词：
contaminated soil; degradation; plasma; pyrene;
D O I：
10.11949/0438-1157.20220351
中图分类号：
学科分类号：
摘要：
Aiming at the pollution of the polycyclic aromatic hydrocarbons (PAHs) in soil in China, the self-developed dielectric barrier pulse reactor was used to treat pyrene in soil, and the effects of discharge voltage, discharge frequency, soil moisture, soil thickness, air velocity and soil pH on the degradation effect were studied. The results showed that the degradation rate of pyrene increased with the increase of discharge voltage and discharge frequency, and the air flow rate and soil moisture were favorable for the degradation of pyrene. The degradation rate of pyrene decreased with the increase of soil thickness and the decrease of pH. The optimal degradation conditions are as follows: discharge voltage 12.6 kV, discharge frequency 1.0 kHz, soil moisture 3.0%, soil thickness 1 mm, air flow rate 2 L/min, pH≥7. The degradation rate was 97.04%. According to the analysis of HPLC-MS and FT-IR, it was indirectly proved that the active substances such as O3, ·OH, NOx produced by the discharge were beneficial to the degradation of pyrene, and the possible degradation pathway of pyrene is proposed. © 2022 Chemical Industry Press. All rights reserved.
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页码：4025 / 4033
页数：8
相关论文
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