Comparative Study on Different Remediation Strategies Applied in Petroleum-Contaminated Soils

Cui, Jiaqi; He, Qing-Sheng; Liu, Minghui; Chen, Hong; Sun, Mingbo; Wen, Jianping

doi:10.3390/ijerph17051606

Cited by 46 publications

(15 citation statements)

References 43 publications

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“…This is due to the lower hydrophobicity of the short and medium-chain alkanes; thus, they are more easily degraded, as other authors confirmed [9]. The percentage of removed hydrocarbons was 63% on average for alkanes and 50% for aromatics in 138 days, which is in line with the values obtained in other studies [5,29].…”

Section: Discussionsupporting

confidence: 87%

Selective Removal of Diesel Oil Hydrocarbons in Aerobic Bioremediation

et al. 2021

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In soil bioremediation, the main target is the removal of pollutants to the maximum extent. Careful monitoring of pollution concentration provides information about the process efficacy and removal efficiency. Moreover, a detailed analysis of residual pollution composition provides a detailed picture of single compound removal or presence, especially of interest when pollution is constituted by a mixture of chemical species. This paper shows the first results of a study on the speciation of diesel oil compound removal from soils by aerobic remediation. The experimental study was carried out in a microcosm using indigenous microorganisms and adopting the biostimulation strategy with a mineral salt medium for bacteria. The microcosm contained 200 g of dry soil and 14 g of diesel oil with a carbon to nitrogen ratio (C/N) equal to 180 and water content (u%) equal to 12% by mass. The residual pollution concentration in soil was monitored for 138 days to evaluate both the overall removal efficiency and that for the main groups of hydrocarbons. The results showed that the pollution composition changed during the test because of the different rate of metabolization for the single compounds: the overall removal efficiency was about 65%, and that of different hydrocarbon clusters was between 53% and 88%. The monitoring data also allowed the kinetic study of the degradation process, which was better modeled by a second-order kinetic model than by a first-order one. These findings were confirmed by analyzing other microcosms with different operative conditions (C/N = 120, 180 and u% = 8%, 12%, 15% by mass). The proposed methodology may be useful for the evaluation of compliance to concentration limits imposed by law.

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Section: Discussionsupporting

confidence: 87%

Selective Removal of Diesel Oil Hydrocarbons in Aerobic Bioremediation

et al. 2021

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“…It has been well documented those microbial activities and physicochemical properties of soil have a marked impact on the effectiveness of phytoremediation of PHs [13,14]. A vast variety of microbial communities such as fungi, algae and bacteria take part in the complete mineralization of PHs [15]. Bacteria use the carbon from PHs to carry out their reproductive and metabolic mechanisms [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…Bacteria use the carbon from PHs to carry out their reproductive and metabolic mechanisms [16,17]. Several isolated microbes of genera Achromobacter, Bacteroides, Acinetobacter, Microbacterium, Actinobacteria, Pseudomonas, Arthrobacter, Cellulomonas and Azobacter are known to be effective for PHCs degradation [15,18,19]. They produce a variety of enzymes to regulate the degradation pathways through different oxidations reactions [15,18,20] and lead to mineralization of PHs to produce CO 2 and H 2 O [15,21].…”

Section: Introductionmentioning

confidence: 99%

Biochar and Bacillus sp. MN54 Assisted Phytoremediation of Diesel and Plant Growth Promotion of Maize in Hydrocarbons Contaminated Soil

et al. 2021

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Contamination by petroleum hydrocarbons (PHs) is a great threat to environment due to the higher persistence and bio-toxicity of PHs. Therefore, removal of PHs from contaminated environment and strategies to reduce their toxic effects on living organisms are crucial for environmental safety and human health. The toxic effects of PHs from the polluted soil can be reduced by the addition of microbes and biochar. In this study, a pot trial was carried out to evaluate the effects of sugarcane bagasse (SB) biochar and Bacillus sp. MN54 addition on phytoremediation of PHs and growth of maize (Zea mays L.) in soil artificially contaminated with diesel. Maize seeds were sown in uncontaminated or contaminated (with PHs) soil, treated with biochar and Bacillus sp. MN54. The results revealed that PHs showed significant phytotoxicity to maize plants and the application of strain MN54 and biochar greatly reduced the toxic effects of PHs on plants growth and physiology by increasing the nutrients uptake in PHs contaminated soil. Interestingly, the phytotoxicity of PHs on maize plants was further reduced in the co-supplementation of strain MN54 and biochar. Plants physiological (25–48%) and agronomic (38–47%) attributes were significantly higher as compared to only PHs contaminated soil in the co-supplementation of strain MN54 and biochar. Similarly, nitrogen (41%), phosphorus (43%) and potassium (37%) concentrations were also increased in the co-supplementation of strain MN54 and biochar. Furthermore, maize plants successfully phytoremediate a considerable amount of PHs from soil particularly in the presence of strain MN54 and biochar, and this PHs removal was further enhanced in the co-supplementation of strain MN54 and biochar (i.e., 46% and 77% of initial PHs were removed in unplanted and planted treatments, respectively). The present results indicate that co-supplementation of biochar and Bacillus sp. MN54 could be effective in enhancing the degradation of PHs and improving plant growth in the hydrocarbons contaminated soil.

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“…Biostimulation alone is mostly practiced in soil remediation [ 108 , 109 , 110 , 111 ]. Indigenous micro-organisms remain deprived of nutrients in this natural environment.…”

Section: Bioremediation Methodsmentioning

confidence: 99%

Bioremediation of Total Petroleum Hydrocarbons (TPH) by Bioaugmentation and Biostimulation in Water with Floating Oil Spill Containment Booms as Bioreactor Basin

Sayed

Baloo

Sharma

2021

IJERPH

115

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A crude oil spill is a common issue during offshore oil drilling, transport and transfer to onshore. Second, the production of petroleum refinery effluent is known to cause pollution due to its toxic effluent discharge. Sea habitats and onshore soil biota are affected by total petroleum hydrocarbons (TPH) as a pollutant in their natural environment. Crude oil pollution in seawater, estuaries and beaches requires an efficient process of cleaning. To remove crude oil pollutants from seawater, various physicochemical and biological treatment methods have been applied worldwide. A biological treatment method using bacteria, fungi and algae has recently gained a lot of attention due to its efficiency and lower cost. This review introduces various studies related to the bioremediation of crude oil, TPH and related petroleum products by bioaugmentation and biostimulation or both together. Bioremediation studies mentioned in this paper can be used for treatment such as emulsified residual spilled oil in seawater with floating oil spill containment booms as an enclosed basin such as a bioreactor, for petroleum hydrocarbons as a pollutant that will help environmental researchers solve these problems and completely clean-up oil spills in seawater.

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Comparative Study on Different Remediation Strategies Applied in Petroleum-Contaminated Soils

Cited by 46 publications

References 43 publications

Selective Removal of Diesel Oil Hydrocarbons in Aerobic Bioremediation

Selective Removal of Diesel Oil Hydrocarbons in Aerobic Bioremediation

Biochar and Bacillus sp. MN54 Assisted Phytoremediation of Diesel and Plant Growth Promotion of Maize in Hydrocarbons Contaminated Soil

Bioremediation of Total Petroleum Hydrocarbons (TPH) by Bioaugmentation and Biostimulation in Water with Floating Oil Spill Containment Booms as Bioreactor Basin

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