Removal of TPH, UCM, PAHs, and Alk-PAHs in oil-contaminated soil by thermal desorption

Choi, Byeongwook; Lee, Sungjong; Jho, Eun Hea

doi:10.1186/s13765-020-00569-z

Cited by 19 publications

(14 citation statements)

References 25 publications

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“…Another previous study reported 70% TPH removal from an oil-contaminated soil sample after treatment at 300 °C for 10 min [ 26 ]. In contrast to a previous study, as a result of controlling the moisture content in the pyrolysis method in the case of TPH when it was operated at 200 °C for 60 min, it was possible to confirm the high removal efficiency of 91.61% and 93.68% at the water content of 10% and 20%, respectively [ 25 ]. In addition, the residual amounts of TPH and UCM decreased significantly up to 200 °C, but it was confirmed that sharpness decreased when applied at a higher temperature.…”

Section: Resultscontrasting

confidence: 68%

“…As a result of pyrolysis at 600 °C for 60 min, the residual amount of TPH was not statistically significant as a result of the t-test, according to the difference in moisture content ( p -value = 0.001). In our previous study on the open system pyrolysis, the TPH removal rates of 74% and 76% were obtained after 30 min and 60 min treatments at 200 °C [ 25 ]. In this study, the closed system pyrolysis achieved higher TPH removal rates (i.e., 88% and 93% after 30 min and 60 min, respectively).…”

Section: Resultsmentioning

confidence: 99%

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Pyrolytic Remediation and Ecotoxicity Assessment of Fuel-Oil-Contaminated Soil

Choi

Kang

et al. 2022

Toxics

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Oil-contaminated soil is a major societal problem for humans and the environment. In this study, the pyrolysis method was applied to oil-contaminated soil used as a landfill and gas station site in Korea. The removal efficiency of the main components of oil-contaminated soils, such as total petroleum hydrocarbons (TPH), polyaromatic hydrocarbons (PAHs), unresolved complex mixture (UCM), and alkylated PAHs (Alk-PAHs) were measured, and the effect of temperature, treatment time, and moisture content on pyrolysis efficiency was studied. In order to evaluate the risk of soil from which pollutants were removed through pyrolysis, integrated ecotoxicity was evaluated using Daphnia magna and Allivibrio fischeri. The chemical and biological measurements in this study include contaminants of emerging concerns (CECs). Results showed that the pyrolysis was more efficient with higher treatment temperatures, moisture content, and treatment times. In addition, toxicity was reduced by 99% after pyrolysis, and the degree of toxicity was evaluated more sensitively in Allivibrio fischeri than in Daphnia magna. This study shows that weathered oil-contaminated soil can be effectively treated in a relatively short time through pyrolysis, as well as provides information on efficient conditions and the assessment of ecotoxicity.

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Section: Resultscontrasting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Pyrolytic Remediation and Ecotoxicity Assessment of Fuel-Oil-Contaminated Soil

Choi

Kang

et al. 2022

Toxics

Self Cite

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“…In the small-scale test, researchers mainly obtained thermal desorption effects under different experimental conditions. The effects of temperatures and treatment times on the thermal desorption efficiency were studied by the thermal desorption of oil-contaminated soils from a former landfill and gas station site in Korea . The study showed that the different components of oil in the oil-contaminated soils could be treated effectively in a relatively short time by thermal desorption.…”

Section: Introductionmentioning

confidence: 99%

“…The effects of temperatures and treatment times on the thermal desorption efficiency were studied by the thermal desorption of oil-contaminated soils from a former landfill and gas station site in Korea. 9 The study showed that the different components of oil in the oilcontaminated soils could be treated effectively in a relatively short time by thermal desorption. Zhang influence of heating temperature and residence time on the disposal effect.…”

Section: Introductionmentioning

confidence: 99%

Thermal Desorption Process Simulation and Effect Prediction of Oil-Based Cuttings

2022

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The disposal effect of thermal desorption of oil-based cuttings is predicted by analyzing the material temperature rise, heat transfer, and liquid evaporation in the processing. Based on the characteristics of material conveying in the heating bed, this paper establishes the governing equations for the simulation calculation of thermal desorption processing and demonstrates the correlation model between the mass change of wet components and the heat required. Changes in the material temperature and mass content of wet components in the process are calculated using the finite-volume method. The minimum temperature of the material layer experienced three stages: slow rising stage, stagnation stage, and rapid rising stage. In the first two stages, material preheating and water evaporation are the dominant processes. The third stage is mainly the evaporation of the oil phase. The inflection point between the second and third stages in the temperature rise curve can be regarded as the end point of water evaporation. During conveying, residence time and material layer thickness significantly influence the liquid phases removal ratio. The material drying area gradually expands from the boundary to the center with the extension of residence time, and the average mass fraction of liquids decreases slowly. The evaluation results from the final temperature and residual oil content of solid slag after disposal are consistent with the tests and have better accuracy in predicting the disposal effect when the heating temperature is higher and the residence time is longer.

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“…When released in surroundings, they portend great ecological and health concern. Choi et al, [4] reported that PAHs are one of the main elements of crude oil. Annually, large quantities of petroleum products are discharged into the soil and water bodies either accidentally or improperly due to mining, transportation, leakages from pipelines and blow outs.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation and Impact of Polycyclic Aromatic Hydrocarbons in the Environment: A Review

Onwujekwe

Ogbonna

Eze

et al. 2022

JABB

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Polycyclic aromatic hydrocarbons are chemical substances that are produced from natural sources such as volcanic eruptions and from anthropogenic sources such as incomplete combustion of fuels such as coal, oil, gas and waste materials. They are mostly implicated among numerous toxic compounds in the ecological system. Exposure of such organic pollutants in an environment can endanger animals, plants, microbial, soil, and aquatic lives. Human beings are at a high risk of developing cancers due to pollutants exposure. The existence of such pollutants in the surroundings can endanger microbial life by affecting cell growth, shape and metabolic process, alters genetic composition and membranes of microbial cells. The major routes of microbial degradation of organic pollutants are via growth and co-metabolism. The processes enable microorganisms to metabolize toxic compounds in the cells milieu, so as to transform contaminants into harmless forms such as carbon dioxide and water. Bioremediation remains the safest and eco-friendly means of converting toxic environment to a harmless state. This review seeks to provide an overview of biodegradation of polycyclic aromatic hydrocarbons and the adverse effect of polycyclic aromatic hydrocarbons compounds in the environment.

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Removal of TPH, UCM, PAHs, and Alk-PAHs in oil-contaminated soil by thermal desorption

Cited by 19 publications

References 25 publications

Pyrolytic Remediation and Ecotoxicity Assessment of Fuel-Oil-Contaminated Soil

Pyrolytic Remediation and Ecotoxicity Assessment of Fuel-Oil-Contaminated Soil

Thermal Desorption Process Simulation and Effect Prediction of Oil-Based Cuttings

Biodegradation and Impact of Polycyclic Aromatic Hydrocarbons in the Environment: A Review

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