Oil Bioremediation in a Tropical Contaminated Soil Using a Reactor

Trejos-Delgado, Catalina; Cadavid-Restrepo, Gloria; Hormaza-Anaguano, Angelina; Agudelo, Édison Alexánder; Barrios-Ziolo, Leonardo Fabio; Loaiza‐Usuga, Juan Carlos; Gallo, Santiago Alonso Cardona

doi:10.1590/0001-3765202020181396

Cited by 5 publications

(4 citation statements)

References 38 publications

(26 reference statements)

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“…The process was able to remove a high concentration of TPH (8840 mg/kg) despite its low removal efficiency at initial concentrations of 10,000 mg/kg, which indicated the high ability of isolates to decompose TPHs. The results of this study are in agreement with those of previous studies [47, 48].…”

Section: Discussionsupporting

confidence: 94%

Effective bioremediation of petroleum‐contaminated saline soil using halotolerant Bacillus strains isolated from the Persian Gulf

et al. 2022

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A consortium isolated from the Persian Gulf is evaluated for its ability to bioremediate petroleum‐contaminated soils. The soil sample was collected from oil fields of South Western Iran. The crude oil concentrations were set to 1000–10,000 mg/kg, and the sodium chloride concentration was set to 0.5%, 1%, 1.5%, 2%, and 2.5%. Operational parameters including volume (2–20 ml) and soil moisture (25%, 50%, and 100%) were studied consecutively according to one factor at the time of experimental design. A total number of eight different isolates capable of degrading crude oil were isolated from hydrocarbon‐contaminated sites (KL1–KL8). The removal efficiency of Total petroleom hydrocarbons (TPH) with an initial concentration of 1000 mg/kg for numbers of bacterial cells per gram soil of 2, 10, and 20 CFU/g was 20.9%, 45%, and 60%, respectively. The removal efficiency of TPHs (initial concentration of 1000 mg/kg) at the end of fifth week for salinity amounts of 0.5%, 1%, 1.5%, 2%, and 2.5% was 10.87%, 22.4%, 25.7%, 68.6%, and 60.5%, respectively. The TPHs biodegradation efficiencies at different soil/water ratios of 25%, 50%, and 100% (slurry) were 12%, 28.7%, and 60.8%, respectively. In sunflowers, there was no statistically significant difference in seed germination for different levels of soil pollution (p > 0.05). The results of the current work suggest that this process is a viable and efficient method for remediating contaminated sites. To enhance the removal results in real soil, a scale‐up study should also be conducted.

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Section: Discussionsupporting

confidence: 94%

Effective bioremediation of petroleum‐contaminated saline soil using halotolerant Bacillus strains isolated from the Persian Gulf

et al. 2022

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“…It is clear that oil disposal caused the contamination of the soil at the Khurmala oil field. The research conducted by Ergozhin et al [47], Kuany et al [48], Wang et al [49], Trejos-Delgado et al [50], and Jabbarov et al [51] confirms the obtained results. All pH values were in the normal range, except the pH value for the soil sample treated with OPC, which is classified in the high alkaline range (pH = 12.74).…”

Section: Chemical Testssupporting

confidence: 71%

“…Chemical tests for the clean, contaminated, and tread soil samples are shown in Table 7. It is clear that the values of pH, alkalinity, bicarbonate, sulfate, total orga matter, and oil and grease in the polluted samples were higher than for the clean samp It is clear that oil disposal caused the contamination of the soil at the Khurmala oil fie The research conducted by Ergozhin et al [47], Kuany et al [48], Wang et al [49], T jos-Delgado et al [50], and Jabbarov et al [51] confirms the obtained results. All pH v ues were in the normal range, except the pH value for the soil sample treated with OP which is classified in the high alkaline range (pH = 12.74).…”

Section: Chemical Testsmentioning

confidence: 99%

Solidification/Stabilization of Contaminated Soil in a South Station of the Khurmala Oil Field in Kurdistan Region, Iraq

2021

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Currently, the primary source of pollution is crude oil production. Crude oil production has dramatic consequences for farmlands, communities, and in terms of the construction materials required for earthworks. The main aims of the present study were to reduce the level of pollution caused by oil production in the Khurmala soil and then reuse it as a construction material. Soil remediation using the solidification/stabilization method was applied in the field using Portland limestone cement (CEM II). The performance of using CEM II in the remediation process was then investigated in the laboratory by taking the natural, contaminated, and treated soils from the Khurmala site. Furthermore, the results of the soils were compared with their corresponding soil samples using ordinary Portland cement (OPC). The comparison was performed by investigating the physical, chemical, and mechanical properties of the soils. The discussion was supported using the scanning electron microscopy (SEM) results. Chemical and SEM results revealed that there were fourfold and tenfold decreases in the percentage of oil and grease using OPC and CEM II, respectively, confirming the higher performance of using CEM II over OPC. The values of the coefficient of permeability, shear strength parameters, and California bearing ratio of the treated soils were significantly improved, compared to those of the contaminated soils.

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“…As the hydrocarbon contaminant is highly persistent with some toxicity packages, this can have long-term effects on many cold temperate species and further destroy the ecosystem. Thus, oil spills have created a great need for remediation efforts to be considered [ 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Oil Palm’s Empty Fruit Bunch as a Sorbent Material in Filter System for Oil-Spill Clean Up

Puasa

Ahmad

Zakaria

et al. 2022

Plants

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Oil pollution such as diesel poses a significant threat to the environment. Due to this, there is increasing interest in using natural materials mainly from agricultural waste as organic oil spill sorbents. Oil palm’s empty fruit bunch (EFB), a cost-effective material, non-toxic, renewable resource, and abundantly available in Malaysia, contains cellulosic materials that have been proven to show a good result in pollution treatment. This study evaluated the optimum screening part of EFB that efficiently absorbs oil and the physicochemical characterisation of untreated and treated EFB fibre using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The treatment conditions were optimised using one-factor-at-a-time (OFAT), which identified optimal treatment conditions of 170 °C, 20 min, 0.1 g/cm3, and 10% diesel, resulting in 23 mL of oil absorbed. The predicted model was highly significant in statistical Response Surface Methodology (RSM) and confirmed that all the parameters (temperature, time, packing density, and diesel concentration) significantly influenced the oil absorbed. The predicted values in RSM were 175 °C, 22.5 min, 0.095 g/cm3, and 10%, which resulted in 24 mL of oil absorbed. Using the experimental values generated by RSM, 175 °C, 22.5 min, 0.095 g/cm3, and 10%, the highest oil absorption achieved was 24.33 mL. This study provides further evidence, as the data suggested that RSM provided a better approach to obtain a high efficiency of oil absorbed.

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Oil Bioremediation in a Tropical Contaminated Soil Using a Reactor

Cited by 5 publications

References 38 publications

Effective bioremediation of petroleum‐contaminated saline soil using halotolerant Bacillus strains isolated from the Persian Gulf

Effective bioremediation of petroleum‐contaminated saline soil using halotolerant Bacillus strains isolated from the Persian Gulf

Solidification/Stabilization of Contaminated Soil in a South Station of the Khurmala Oil Field in Kurdistan Region, Iraq

Oil Palm’s Empty Fruit Bunch as a Sorbent Material in Filter System for Oil-Spill Clean Up

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