Pyrolytic remediation of crude oil-contaminated soil

Kang, Chan-Ung; Kim, Do-Hyeon; Khan, Moonis Ali; Kumar, Rahul; Ji, Seung-Eun; Choi, Kwang‐Seong; Paeng, Ki‐Jung; Park, Sung Min; Jeon, Byong‐Hun

doi:10.1016/j.scitotenv.2020.136498

Cited by 59 publications

(28 citation statements)

References 51 publications

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“…On the other hand, incineration (up to 1000 °C) techniques were proposed for the remediation of TPH-contaminated soil, particularly to reduce remediation time and complete removal capability [ 8 , 9 , 10 ]. Incineration can decompose TPH and may remove contaminants from TPH-contaminated soil [ 11 ]. However, the operational cost, energy consumption, and structural deterioration of soil have restricted its application [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

Removal of Total Petroleum Hydrocarbons from Contaminated Soil through Microwave Irradiation

Cho

Myung

Kim

et al. 2020

IJERPH

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“…In thermal desorption, the soil contaminants are desorbed, mobilized, and evaporated by the rise in temperature (from 100 to 600 °C). Besides, thermal desorption also promotes biodegradation but decreases soil fertility 18 . Relatively limited studies are available on the application of pyrochar on the remediation of soil contaminated with organic pollutants 19 .…”

Section: Discussionmentioning

confidence: 99%

Comparison of plant growth and remediation potential of pyrochar and thermal desorption for crude oil-contaminated soils

Ilyas

Shoukat

Saeed

et al. 2021

Sci Rep

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Crude oil contamination is a serious environmental threat for soil and plants growing in it. This study provides the first experimental evidence for comparison of the efficacy of pyrochar (slow pyrolysis biochar), thermal desorption and their combined application for degradation of crude oil contaminated soil (0%, 10%, and 20%), and growth of lettuce under glasshouse conditions. Pyrochar was produced by pyrolysis of sawdust at 350 °C, whereas thermal desorption was done by soil pyrolysis at 500 °C. Soil incubations were done for 120 days. The results of soil analysis showed that the crude oil degradation efficiency for the combined application was highest (40%), whereas pyrochar and thermal desorption was 25% and 19.6%, respectively. The maximum degradation products of crude oil were manifested by the detection of low molecular weight hydrocarbons (ranged between 173 and 422) in the soil with combined application treatment using Gas Chromatography-Mass Spectrometry (GC–MS) analysis. Crude oil contamination significantly reduced the germination and growth of the lettuce plants. Similarly, the combined application also improved plant growth by an increase of 24% in germination percentage, 35.5% in seedling vigor index, and 27% in promptness index under 20% crude oil contamination. Remediation caused a significant increase in fresh and dry biomass (40%), leaf area (30%), total chlorophyll (21%), water potential (23.6%), osmotic potential (27%), and membrane stability index (40%). Moreover, there was an increase in the contents of proline (32%), total amino acids (29%), soluble sugars (37%), proteins (27%), and antioxidant enzymes such as superoxide dismutase (19%), catalase (33%) and peroxidase (38%). This study confirmed the efficacy of pyrochar (slow pyrolysis biochar), thermal desorption, and their combined application for crude oil decontamination of soil at laboratory scale and also in improving soil usability by improved germination and growth of lettuce.

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“…Também pode ocorrer a remoção, quando os contaminantes são dessorvidos do solo, porém sem serem destruídos (USEPA 1992a, VIDONISH et al 2016. KANG et al (2020) e SONG et al (2019 estudaram o processo de remediação pirolítica para o tratamento de solos impactados por hidrocarbonetos de petróleo. Temperaturas superiores a 350°C resultaram em remoção significativa dos contaminantes nos dois estudos.…”

Section: Piróliseunclassified

Princípios e aplicações de processos térmicos para remediação de áreas contaminadas

Leite¹,

Shinzato²,

Freitas³

2020

Rev. Inst. Geol.

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Processos térmicos têm sido cada vez mais aplicados mundialmente para a remediação de áreas contaminadas. O tratamento térmico, in situ ou ex situ, baseia-se na elevação da temperatura do solo e da água subterrânea visando a degradação do contaminante ou a sua transferência para a fase vapor, facilitando sua extração. Existem diversas formas de aquecimento, sendo a condução de calor, o aquecimento por resistência elétrica e a injeção de vapor os métodos mais utilizados. A remediação térmica pode ser utilizada em áreas com concentrações elevadas de contaminantes dissolvidos e até mesmo em fase separada (NAPLs), além de ser aplicável em diferentes litologias. Apesar do seu potencial de utilização, no Brasil essa técnica ainda é pouco estudada e aplicada. Dessa forma, o presente trabalho apresenta uma análise das diversas técnicas de remediação por processos térmicos, suas aplicações, vantagens e desvantagens, assim como um panorama de sua utilização em nível nacional.

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Pyrolytic remediation of crude oil-contaminated soil

Cited by 59 publications

References 51 publications

Removal of Total Petroleum Hydrocarbons from Contaminated Soil through Microwave Irradiation

Removal of Total Petroleum Hydrocarbons from Contaminated Soil through Microwave Irradiation

Comparison of plant growth and remediation potential of pyrochar and thermal desorption for crude oil-contaminated soils

Princípios e aplicações de processos térmicos para remediação de áreas contaminadas

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