Degradation of PAHs in soil by different oxidants activated sodium persulfate

doi:10.3969/j.issn.1004-1524.2017.01.18

›› 2017, Vol. 29 ›› Issue (1): 129-136.DOI: 10.3969/j.issn.1004-1524.2017.01.18

• Environmental Science • Previous Articles Next Articles

Degradation of PAHs in soil by different oxidants activated sodium persulfate

ZHAN Sheng^{1, 2}, ZHENG Yi¹, LI Sen^{2, *}, ZHANG Yang², ZHANG Hongling², SHANG Zhaocong², LUO Yong²

1. School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
2. Shanghai Research Institute of Chemical Industry, Shanghai 200062, China

Received:2016-06-02 Online:2017-01-15 Published:2017-02-23

Abstract

Abstract: Activated sodium persulfate by hydrogen peroxide, sodium percarbonate and calcium peroxide were used to removal anthracene, pyrene, and benzoapyrene (PAHs) in soil, respectively. In addition, the kinetics and by-products in the reaction process of PAHs were investigated. The results showed that the activation effect on sodium persulfate was in the order of sodium percarbonate>hydrogen peroxide>calcium peroxide. The degradation rate of anthracene, pyrene and benzoapyrene was 96.8%, 93.5% and 96.8%, respectively, in the case of sodium persulfate activated by sodium percarbonate with the following condition: reaction time of 180 min, temperature of 25 ℃, soil and water both 5 g, and the concentration of sodium persulfate, sodium percarbonate in water of 1.0 and 0.67 mmol·g^-1. Kinetic analysis indicated that degradation of PAHs by sodium persulfate activated by sodium percarbonate and hydrogen peroxide both were complying with first order reaction kinetics, and the vast majority of PAHs in the soil were degraded.

Key words: sodium persulfate, activation, PAHs

CLC Number:

ZHAN Sheng, ZHENG Yi, LI Sen, ZHANG Yang, ZHANG Hongling, SHANG Zhaocong, LUO Yong. Degradation of PAHs in soil by different oxidants activated sodium persulfate[J]. , 2017, 29(1): 129-136.

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Degradation of PAHs in soil by different oxidants activated sodium persulfate

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