Remediation of petroleum hydrocarbon contaminated soil by using activated persulfate with ultrasound and ultrasound/Fe

被引：54
|
作者：
Li, Yong-Tao [1 ,2 ]
Li, Dan [2 ]
Lai, Lian-Jue [2 ]
Li, Yu-Hang [2 ]
机构：
[1] State Key Lab Petr Pollut Control, Beijing 102206, Peoples R China
[2] Southwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
来源：
CHEMOSPHERE | 2020年 / 238卷
关键词：
Ultrasonic; Zero-valent iron; Persulfate; Soil remediation; Petroleum hydrocarbon; AQUEOUS-SOLUTION; PERMANGANATE OXIDATION; DEGRADATION; LEVOFLOXACIN; SYSTEM; BIOREMEDIATION; REDUCTION; PRODUCTS; KINETICS; REMOVAL;
D O I：
10.1016/j.chemosphere.2019.124657
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study investigates the degradation of petroleum hydrocarbon in contaminated soil using activated persulfate (PS) with ultrasound (US) and US/Fe. Various controlling factors including different PS dosage, ultrasonic power, pH, soil water ratio and soil particle size were considered. It was found that petroleum hydrocarbon degradation efficiency achieved up to 56.41% and 82.23% in US/PS and US/Fe/PS system, respectively. Based on the experimental results, the reaction rate of US/Fe/PS system was faster than US/PS system and the degradation efficiency enhanced significantly with the increasing ultrasonic power. Changing initial solution pH influenced the petroleum hydrocarbon reaction rate and the best performance would be achieved at pH of 5. The present work identified the main components of petroleum hydrocarbon pollutants in shale gas sites. The mechanism of petroleum hydrocarbon degradation on US/Fe/PS system were analyzed. (C) 2019 Elsevier Ltd. All rights reserved.
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页数：8
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