Resource utilization of petroleum-contaminated soil to prepare persulfate activator by ferrate pretreatment and pyrolysis

Li, Po; Liao, Yaping; Wang, Mingxin; Xue, Jinjuan; Wu, Chao; Yuan, Qian

doi:10.1016/j.jclepro.2022.130473

Cited by 11 publications

(2 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first stage ranged from 25°C to 150°C, in which mainly the water in the PCS was volatilized. [ 35 ] The second stage was from 150°C to 530°C. The weight loss rate of PCS increased remarkably, indicating the beginning of the degradation of crude oil in the soil.…”

Section: Resultsmentioning

confidence: 99%

“…The first stage ranged from 25 • C to 150 • C, in which mainly the water in the PCS was volatilized. [35] The second stage was from 150 • C to 530 • C. The weight loss rate of PCS increased remarkably, indicating the beginning of the degradation of crude oil in the soil. In this temperature range, C-C bonds of larger hydrocarbons were broken to generate small molecular substances, and petroleum hydrocarbons were dehydrogenized to produce alkenes and hydrogen.…”

Section: Tg and Dtg Analysismentioning

confidence: 96%

See 1 more Smart Citation

Remediation of petroleum‐contaminated soil by Fenton oxidation–pyrolysis

Gu,

Zhou,

Zhu

et al. 2024

CLEAN Soil Air Water

View full text Add to dashboard Cite

Petroleum‐contaminated soil (PCS) is urgently to be remediated due to its risk to ecological environment and human health. In this study, a Fenton oxidation–pyrolysis strategy was employed to accomplish effective petroleum removal and PCS remediation. The highest total petroleum hydrocarbon removal efficiency could achieve 99.6% after 2 h Fenton oxidation, with H2O2/Fe2+, 6:1, and pH 3, followed by pyrolysis at 370°C. The organic compositions of the soil after Fenton oxidation, the kinetics and process of the pyrolysis, morphologies and structures of the treated soil, as well as energy consumption and cost savings were comprehensively researched and analyzed. Through the Fenton oxidation–pyrolysis treatment, the macromolecules were effectively degraded and the contents of asphaltenes and resins were significantly reduced in the soil. Graphitized carbon was dominatingly existed after the pyrolysis. A 1.5 order reaction model was proposed to reasonably describe the pyrolysis remediation process of PCS. The Fenton oxidation–pyrolysis treatment can reduce energy consumption and cost compared with pyrolysis alone. This work not only offered an alternative approach of PCS remediation, but also provided theoretical guidance for practical soil remediation.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Tg and Dtg Analysismentioning

confidence: 96%