Crude oil bioremediation in sub-Antarctic intertidal sediments: chemistry and toxicity of oiled residues

Pelletier, Émilien; Delille, Daniel; Delille, Bruno

doi:10.1016/j.marenvres.2003.07.001

Cited by 98 publications

(46 citation statements)

References 33 publications

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“…3; Table 4). Previous studies reveal that addition of nutrients enhances the degradation process by providing optimum growth parameters for microorganisms (Pelletier et al 2004). However, in the present study, addition of N alone had a minor effect on degradation and dehydrogenase activity as compared to other soil amendments.…”

Section: Control [B]: Effect Of Biostimulationcontrasting

confidence: 71%

Microbe assisted phytoremediation of oil sludge and role of amendments: a mesocosm study

Nanekar

Dhote

Kashyap

et al. 2013

Int. J. Environ. Sci. Technol.

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A mesocosm study was evaluated to elucidate the influence of amendments such as microbial consortium, plant (Vetiveria zizanioides), bulking agent (wheat husk) and nutrients on remediation of oil sludge over a period of 90 days. The experiment was conducted in a 15 m 2 plot which was divided into eight units comprising of soil sludge mixture (1:1) at CSIR-NEERI premises. During the experiment, oil degradation was estimated gravimetrically and polyaromatic hydrocarbons (PAHs) were quantified on GC-MS. Additionally, dehydrogenase activity was also monitored. The treatment integrated with bulking agent, nutrients, consortium and plant resulted in 28-fold increased dehydrogenase activity and complete mineralization of higher PAHs. Furthermore, 72.8 % total petroleum hydrocarbons (TPH) degradation was observed in bulked treatment with plant, nutrients and consortium followed by 69.6 and 65.4 % in bioaugmented treatments with and without nutrients, respectively, as compared to control (33.4 %). A lysimeter study was also conducted simultaneously using Vetiver and consortium to monitor groundwater contamination by heavy metals in oil sludge which showed a marked decrease in the concentrations of metals such as lead and cadmium in leachates. This study validates a holistic approach for remediation of oil sludge contaminated soils/sites which is a burning issue since decades by the use of microbe assisted phytoremediation technology which not only solves the problem of oil contamination but also takes care of heavy metal contamination.

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Section: Control [B]: Effect Of Biostimulationcontrasting

confidence: 71%

Microbe assisted phytoremediation of oil sludge and role of amendments: a mesocosm study

Nanekar

Dhote

Kashyap

et al. 2013

Int. J. Environ. Sci. Technol.

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“…The biodegradation of oil pollutants in soil needs necessary nutrients. Choi et al [24], Kim et al [25], and Pelletier et al [26] studied the effect of fertilizers on crude oil-contaminated soil bioremediation in sub-Antarctic intertidal sediments over a 1 year. The results of the study showed that microbial, chemical, and toxicological parameters demonstrated the use of various fertilizers in a pristine environment.…”

Section: Total Petroleum Hydrocarbonmentioning

confidence: 99%

Effectiveness of Sorghum Husk and Chicken Manure in Bioremediation of Crude Oil Contaminated Soil

Adams¹,

Awode²,

Agboola³

2018

Advances in Bioremediation and Phytoremediation

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This study identifies total petroleum hydrocarbons (TPH) and traces of heavy metals such as zinc, lead, cadmium, nickel, and copper in crude oil-contaminated soil. It also focuses on the use of poultry manure and sorghum husk in the bioremediation of the contaminated soil. Crude oil-contaminated soil sample was divided into five parts (A: untreated, B: poultry manure, C and D: poultry manure and sorghum husk in ratios 1:1 and 3:1, respectively, and E: sorghum husk). The heavy metals concentrations and TPH content were assessed initially in the untreated soil sample and later on the 5th, 10th, 15th, 20th, 25th, and 30th days after adding the stimulants. Gas chromatographymass spectroscopy (GC-MS), atomic absorption spectrometer (AAS), pH and conductivity meters were used for TPH, heavy metals, pH and electrical conductivity analyses, respectively. The results showed soil sample C to have highest TPH reduction, while the soil sample E exhibited 96.1% reduction in nickel, 97.5% reduction in zinc, 100% reduction in lead, and 99.3% reduction in copper. The pH of the soil ranged from 7.13 to 7.92 (within the range 6.5-8 suitable for microbial growth). The electrical conductivity for soil samples B-E increased and also in the acceptable range of 130-2320 μS/cm.

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“…Soil conditions were shown to be important for hydrocarbon degradation by microorganisms, and some authors proposed the following levels as optima: soil moisture at 30% of water holding capacity, soil pH between 6.5 and 8, oxygen content between 10% and 40%, and low clay or silt content for soil type [9,17]. Even if hydrocarbon biodegradation has been reported in psychrophilic environments in temperate regions [106,107], the rate of biodegradation generally decreases with a decrease in temperature because it affects hydrocarbon solubility [108] and microbial activity [109]. Generally, the optimum temperature for hydrocarbon degradation in a soil environment is between 20 and 40˝C [54,110,111].…”

Section: Hydrocarbon Rhizoremediationmentioning

confidence: 99%

Root Exudation: The Ecological Driver of Hydrocarbon Rhizoremediation

2016

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Rhizoremediation is a bioremediation technique whereby microbial degradation of organic contaminants occurs in the rhizosphere. It is considered to be an effective and affordable "green technology" for remediating soils contaminated with petroleum hydrocarbons. Root exudation of a wide variety of compounds (organic, amino and fatty acids, carbohydrates, vitamins, nucleotides, phenolic compounds, polysaccharides and proteins) provide better nutrient uptake for the rhizosphere microbiome. It is thought to be one of the predominant drivers of microbial communities in the rhizosphere and is therefore a potential key factor behind enhanced hydrocarbon biodegradation. Many of the genes responsible for bacterial adaptation in contaminated soil and the plant rhizosphere are carried by conjugative plasmids and transferred among bacteria. Because root exudates can stimulate gene transfer, conjugation in the rhizosphere is higher than in bulk soil. A better understanding of these phenomena could thus inform the development of techniques to manipulate the rhizosphere microbiome in ways that improve hydrocarbon bioremediation.

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Crude oil bioremediation in sub-Antarctic intertidal sediments: chemistry and toxicity of oiled residues

Cited by 98 publications

References 33 publications

Microbe assisted phytoremediation of oil sludge and role of amendments: a mesocosm study

Microbe assisted phytoremediation of oil sludge and role of amendments: a mesocosm study

Effectiveness of Sorghum Husk and Chicken Manure in Bioremediation of Crude Oil Contaminated Soil

Root Exudation: The Ecological Driver of Hydrocarbon Rhizoremediation

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