EFFECT AND PROCESS RESEARCH FOR TPH CONTAMINATED SOIL REMEIDANTION BY CHEMICAL OXIDANTION

MIAO Zhou-wei

doi:10.13205/j.hjgc.202005029

Volume 38 Issue 5

Aug. 2020

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MIAO Zhou-wei. EFFECT AND PROCESS RESEARCH FOR TPH CONTAMINATED SOIL REMEIDANTION BY CHEMICAL OXIDANTION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 165-170. doi: 10.13205/j.hjgc.202005029

Citation:

MIAO Zhou-wei. EFFECT AND PROCESS RESEARCH FOR TPH CONTAMINATED SOIL REMEIDANTION BY CHEMICAL OXIDANTION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 165-170. doi: 10.13205/j.hjgc.202005029

MIAO Zhou-wei. EFFECT AND PROCESS RESEARCH FOR TPH CONTAMINATED SOIL REMEIDANTION BY CHEMICAL OXIDANTION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 165-170. doi: 10.13205/j.hjgc.202005029

Citation:

MIAO Zhou-wei. EFFECT AND PROCESS RESEARCH FOR TPH CONTAMINATED SOIL REMEIDANTION BY CHEMICAL OXIDANTION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(5): 165-170. doi: 10.13205/j.hjgc.202005029

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EFFECT AND PROCESS RESEARCH FOR TPH CONTAMINATED SOIL REMEIDANTION BY CHEMICAL OXIDANTION

doi: 10.13205/j.hjgc.202005029

MIAO Zhou-wei

Shanghai Urban Construction Design & Research Institute(Group) Co., Ltd, Shanghai 200125, China

Received Date: 2020-04-01

Abstract

Abstract

In this study, the remediation effect of several chemical oxidation systems on TPH-contaminated soils were evaluated, and some impact factors were studied as well. The results showed that Fenton, Fenton-like and alkali-activated persulfate systems showed good TPH remediation performance. Since the addition of citric acid significantly improved the catalytic activity of Fenton system, the Fenton-like system showed the best TPH degradation performance. The TPH degradation in Fenton-like and alkali-activated persulfate systems followed the pseudo-first-order kinetics. Increasing the concentration of hydrogen peroxide, citric acid and persulfate could enhance the degradation of TPH. It was proved that intensifying mixing, adopting sequential addition of oxidants and reducing soil particle size could obviously improve the degradation effect of TPH with lower amount of oxidants. Moreover, the experimental results confirmed that the main active free radical in Fenton-like system was ·OH, while in the alkali-activated persulfate system, besides ·OH, the presence of SO₄^-· or O₂^-·, and other presenting free radicals also made greater advantage of the oxidants.
- total petroleum hydrocarbon (TPH),
- soil remediation,
- oxidation,
- impact factors,
- mechanism

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References(19)

References

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