REMEDIATION EFFICIENCY OF HIGH-RING POLYCYCLIC AROMATIC HYDROCARBONS IN COKING CONTAMINATED SOIL BY USING POTASSIUM PERMANGANATE

MENG Xiangyu; WANG Huawei; ZOU Rongxue; DING Haoran; SONG Jing; YANG Yuewei; LIU Yuanwen; WANG Yanan; SUN Yingjie

doi:10.13205/j.hjgc.202412028

Volume 42 Issue 12

Dec. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(12): 237-244

MENG Xiangyu, WANG Huawei, ZOU Rongxue, DING Haoran, SONG Jing, YANG Yuewei, LIU Yuanwen, WANG Yanan, SUN Yingjie. REMEDIATION EFFICIENCY OF HIGH-RING POLYCYCLIC AROMATIC HYDROCARBONS IN COKING CONTAMINATED SOIL BY USING POTASSIUM PERMANGANATE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 237-244. doi: 10.13205/j.hjgc.202412028

Citation:

MENG Xiangyu, WANG Huawei, ZOU Rongxue, DING Haoran, SONG Jing, YANG Yuewei, LIU Yuanwen, WANG Yanan, SUN Yingjie. REMEDIATION EFFICIENCY OF HIGH-RING POLYCYCLIC AROMATIC HYDROCARBONS IN COKING CONTAMINATED SOIL BY USING POTASSIUM PERMANGANATE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 237-244. doi: 10.13205/j.hjgc.202412028

Citation:

MENG Xiangyu, WANG Huawei, ZOU Rongxue, DING Haoran, SONG Jing, YANG Yuewei, LIU Yuanwen, WANG Yanan, SUN Yingjie. REMEDIATION EFFICIENCY OF HIGH-RING POLYCYCLIC AROMATIC HYDROCARBONS IN COKING CONTAMINATED SOIL BY USING POTASSIUM PERMANGANATE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 237-244. doi: 10.13205/j.hjgc.202412028

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REMEDIATION EFFICIENCY OF HIGH-RING POLYCYCLIC AROMATIC HYDROCARBONS IN COKING CONTAMINATED SOIL BY USING POTASSIUM PERMANGANATE

doi: 10.13205/j.hjgc.202412028

1. School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China;
2. Beijing Construction Engineering Environmental Remediation Co., Ltd., Beijing 100015, China;
3. National Engineering Laboratory for Site Remediation Technologies, Beijing 100015, China;
4. Dongying Ecological Environment Service Center, Dongying 257091, China

Received Date: 2024-04-15
Available Online: 2025-01-18

Abstract

Abstract

In order to investigate the remediation of polycyclic aromatic hydrocarbons (PAHs) in coking-contaminated soils by using potassium permanganate (KMnO₄) as the oxidant, PAHs contaminated soil in Hefei, Anhui province was taken as the experimental object. Effects of environmental factors including KMnO₄ concentration, reaction time and liquid-solid ratio were determined accordingly. The results showed that: 1) with the increase of KMnO₄ concentration, the removal efficiency of PAHs improved. The content of total PAHs decreased from 300.15 mg/kg to 55.80 mg/kg when KMnO₄ concentration was 0.13 mmol/g, the removal efficiency of total PAHs and benzo [a] pyrene was 81.41% and 97.06%, respectively; 2) the removal efficiency of PAHs significantly increased with the prolongation of reaction time, and after 2 h of reaction, the content of total PAHs was 64.33 mg/kg, with a removal efficiency of 78.57%. When the reaction time was extended to 48 h, the removal efficiency increased to 85.65%; 3) the removal efficiency of PAHs was not significantly affected at different liquid-solid ratios; 4) response surface analysis showed that the removal efficiency of total PAHs reached the peak at 87.62% when the concentration of KMnO₄ was 0.21 mmol/g, the reaction time was 32.50 h and the liquid-solid ratio was 1∶1; 5) KMnO₄ can directly participate in the oxidation of PAHs or indirectly participate in the oxidation of PAHs through by-product MnO₂, and convert high-ring PAHs into low-ring PAHs or various intermediates, and further decompose them into CO₂ and H₂O.
- coking site,
- polycyclic aromatic hydrocarbons (PAHs),
- potassium permanganate (KMnO₄),
- response surface analysis

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References(37)

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