›› 2018, Vol. 30 ›› Issue (10): 1748-1754.DOI: 10.3969/j.issn.1004-1524.2018.10.19

• Environmental Science • Previous Articles     Next Articles

Comparative study on polycyclic aromatic hydrocarbons removal from contaminated soil using different oxidation systems

ZHANG Yang1, LI Sen1, *, ZHANG Hongling1, ZHAN Sheng1, 2, SHANG Zhaocong1   

  1. 1. Laboratory of Industrial (Soil Pollution Remediation) Product Quality Control and Technical Evaluation, Shanghai Research Institute of Chemical Industry Co. Ltd., Shanghai 200062, China;
    2. School of Chemical and Environmental Engineering, Shanghai Institution of Technology, Shanghai 201418, China
  • Received:2017-12-21 Online:2018-10-25 Published:2018-11-02

Abstract: Fenton-like, potassium permanganate and sodium persulfate oxidation systems were used to remove polycyclic aromatic hydrocarbons (PAHs) from contaminated soil. Under the best experimental factors combinations, the maximum PAHs removal rate of these three systems was 96.5%, 94.0% and 95.6%, respectively. On the basis, amplification reactions of the above three systems were carried out in drum reactor with weight ratio of water to soil of 0.6∶1, temperature of 25 ℃,and the removal rates were 63.2%, 72.1% and 70.8%, accordingly. Stoichiometric oxidant demand (SOD) was introduced to evaluate the oxidation efficiency of these systems, and it was shown that the oxidation efficiency of potassium permanganate was higher than the others. In addition, the economic costs of potassium permanganate was the smallest to remove PAHs from contaminated soils under the experimental conditions.

Key words: polycyclic aromatic hydrocarbons, pollution remediation, oxidation

CLC Number: