Insight into ex-situ thermal desorption of soils contaminated with petroleum via carbon number-based fraction approach

Li, Fangzhou; Zhang, Yaping; Wang, Shui; Li, Guobo; Yue, Xiupeng; Zhong, Dan; Chen, Chunhong; Shen, Kai

doi:10.1016/j.cej.2019.123946

Cited by 53 publications

(23 citation statements)

References 46 publications

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“…To verify the removal performance of different components during microwave treatment, the results of the functional groups of the contaminated soil detected by FTIR spectroscopy are shown in Figure 4 b. Compared with uncontaminated soil, a new peak, at 2924 cm −1 , arose in the FTIR curve of the contaminated soil, which was ascribed to the asymmetric C−H stretching vibrations of hydrocarbons [ 5 , 31 ]. The peak of artificially contaminated soil at 2924 cm −1 exhibited shifts to 2923 cm −1 at 5 min and disappeared in the irradiated soil, while bands at 2969, 2971, and 2985 cm −1 exhibited shifts with increased irradiation time, thereby suggesting that the C–H in the saturated C stretching vibration and alkyl groups shifted.…”

Section: Resultsmentioning

confidence: 99%

“…According to the microwave treatment results, desorption and adsorption behavior occurred simultaneously, as shown in Figure 5 . The behavior of different TPH fractions showed that the desorption process might have been affected by van der Waals and hydrophobic forces [ 31 ]. Because a decrease in lightest TPH fraction DRO1 (C10–C16) occurred with an increase in treatment time, whereas DRO3 (C22–C28) and ORO1 (C28–C34) fractions increased, the concentration decreased.…”

Section: Resultsmentioning

confidence: 99%

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Removal of Total Petroleum Hydrocarbons from Contaminated Soil through Microwave Irradiation

Cho

Myung

Kim

et al. 2020

IJERPH

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In this study, we investigated the removal mechanism of total petroleum hydrocarbons (TPH) from soil by microwave heating. TPH contaminated soil was investigated to determine the desorption behavior of five carbon number-based fractions of TPH. The applied operating microwave power density influenced the final temperature that was reached during heating. For low operating power density applications, microwave effectiveness was limited due to the soil’s dielectric properties, which exhibited a direct relationship with temperature variation. Soil particle distribution could be attributed to permeability, which significantly influenced the evaporation of contaminated soil during the microwave treatment. The results indicate that the activation energy was correlated with the influence of particle size. The removal efficiency of the coarse soil reached 91.1% at 15 min, whereas that of fine soil was low. A total of 30 min had passed, and a removal efficiency of 71.2% was found for the fine soil. Residual TPH concentration was decreased when irradiation time was increased with a removal rate dependent on soil temperature variation. The surface functional groups of the contaminated soil were influenced by microwave irradiation, and changes in the hydrocarbon fraction affected contaminant removal.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Removal of Total Petroleum Hydrocarbons from Contaminated Soil through Microwave Irradiation

Cho

Myung

Kim

et al. 2020

IJERPH

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“…Application of bioremediation approaches is another option, e.g., by stimulating indigenous microbes, plant-bacteria partnerships, and biodegradation by a microbial consortium or by natural attenuation, biostimulation, and bioaugmentation (Bento et al 2005 ; Ghazali et al 2004 ; Khan et al 2013 ; Liu et al 2010 ). Application of chemicals is fraught with challenges and further environmental concerns, while biotechnologies are eco-friendly but slow-acting; it is against this background that we used the thermal desorption as the main mechanism for cleaning soils from petroleum products (Falciglia et al 2011 , 2013 , 2014 ; Jia et al 2020 ; Kang et al 2020 ; Li et al 2020 ; Ren et al 2020 ; Yi et al 2016 ). We believe that the nature-like technology of thermal treatment that is centered around the process similar to the evaporation in a semiarid and arid climate is the golden mean, fast-operating and environmentally sound.…”

Section: Introductionmentioning

confidence: 99%

Thermal desorption treatment of petroleum hydrocarbon-contaminated soils of tundra, taiga, and forest steppe landscapes

Bykova

Alekseenko

Пашкевич

et al. 2021

Environ Geochem Health

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The results of field, analytical, and experimental research at a number of production facilities reflect the properties of oil-contaminated soils in 3 landscapes: the permafrost treeless Arctic ecosystem, boreal forest, and temperate-climate grassland-woodland ecotone. Laboratory studies have revealed the concentrations of petroleum hydrocarbons in soils, ranging from medium levels of 2000–3000 mg/kg to critical figures over 5000 mg/kg, being 2–25 times higher than the permissible content of oil products in soils. The experimentally applied thermal effects for the oil products desorption from the soil allowed finding an optimal regime: the treatment temperature from 25 to 250 °C reduces the concentrations to an acceptable value. The conditions are environmentally sound, given that the complete combustion point of humates is ca. 450 °C. The outcomes suggest the eco-friendly solution for soil remediation, preserving the soil fertility in fragile cold environments and in more resilient temperate climates, where revitalized brownfields are essential for food production.

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“…Moreover, the rapid remediation technologies of soil contaminated by organic pollutants cover extensively, including chemical reduction oxidation [5,6,7], soil leaching technology [8], photocatalytic degradation [9,10,11], plasma photolysis and so on, with various requirements for the contaminated site. Physical methods, i.e., electro-kinetic remediation [9,12,13,14], soil vapor extraction [15,16], thermal desorption [17,18,19], supercritical fluid extraction [20], etc., also display certain efficiency. It is necessary to restore the nature of soil after remediation.…”

Section: Introductionmentioning

confidence: 99%

Study on Remediation of Hexachlorobenzene Contaminated Soil by Mechanochemical Method

2021

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The mechanochemical method is a potential way to destroy pollutants such as heavy metals and organic compounds due to its advantages such as complete reaction, adaptation of various pollutants and low energy consumption, etc. Research work was conducted to investigate the feasibility of remediating the persistent organic pollutants (POPs) contaminated soil and how the parameters influence the destruction of the pollutants. In the study, hexachlorobenzene (HCB) was used as a presentative of the POPs in soil. Natural minerals such as albite and magnetite were selected as additives to treat HCB contaminated soil with the application of mechanochemical method. The reasonable operation parameters as well as the soil properties on the destruction of HCB were determined. Analysis such as Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffractometer (XRD), X-ray Photoelectron Spectroscopy (XPS) and Raman Spectrometer were conducted for the supplement of mechanism study. A degradation rate of 92.5% for HCB was achieved under the optimal reaction condition. According to the XPS analysis results, the transformed valence state of iron, provided electrons for the destruction of HCB, on the basis of specific structure of albite. The amorphous carbon and graphite carbon were the final products of the destruction of HCB in the process of ball milling. The selected reagents with albite and magnetite would be viable for the damage of other POPs by mechanochemical method.

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Insight into ex-situ thermal desorption of soils contaminated with petroleum via carbon number-based fraction approach

Cited by 53 publications

References 46 publications

Removal of Total Petroleum Hydrocarbons from Contaminated Soil through Microwave Irradiation

Removal of Total Petroleum Hydrocarbons from Contaminated Soil through Microwave Irradiation

Thermal desorption treatment of petroleum hydrocarbon-contaminated soils of tundra, taiga, and forest steppe landscapes

Study on Remediation of Hexachlorobenzene Contaminated Soil by Mechanochemical Method

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