Impact of bulking agents, forced aeration, and tillage on remediation of oil-contaminated soil

Rhykerd, R. L.; Crews, B.; McInnes, Kevin J.; Weaver, R. W.

doi:10.1016/s0960-8524(98)00114-x

Cited by 113 publications

(59 citation statements)

References 13 publications

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“…Table 3 shows that the seven strains grew in the paraffin wax media (The optical density D 460 measured range from 0.117 to 0.450). The degradation efficiency of paraffin wax shown by the SY 43 strain was 81.3%, which was the highest degradation efficiency observed, while the strain SY 21 showed the lowest efficiency at 43.7% degradation. The degradation efficiencies of the other strains were between SY 43 and SY 21 .…”

Section: The Degradation Ability Of Petroleum-degrading Active Bactermentioning

confidence: 88%

“…Fig.3 presents the degradation rate of TPH by seven strains. It is observed that the rates of biodegradation of SY 21 , SY 22 , SY 23, and SY 44 were higher in the second day, while the rates of SY 42 and SY 43 were higher in day 4, while in day 6, the highest degradation rate was shown by strain SY 24 . The average degradation rates of TPH were within 0.01~0.1 g·kg -1 ·d -1 , which are higher than degradation data previously reported [8][9][10] , consequently these strains could degrade TPH more rapidly.…”

Section: Fig 1 the Biodegradation Efficiency Of The Strains Evaluatedmentioning

confidence: 93%

“…The soil samples inoculated with SY 21 , SY 22 , SY 23, and SY 44 strains showed higher oil removal efficiencies. The removal efficiency of TPH reached up to 50% after 2 days of inoculation.…”

Section: Fig 1 the Biodegradation Efficiency Of The Strains Evaluatedmentioning

confidence: 96%

“…The strains separated from the oil contaminated soil were SY 21 , SY 22 , SY 23 , SY 24 , SY 42 , SY 43 , and SY 44 [13] .…”

Section: The Source Of Samplesmentioning

confidence: 99%

See 3 more Smart Citations

Bioremediation of Crude Oil Contaminated Soil by Petroleum-Degrading Active Bacteria

Xu¹

2012

Introduction to Enhanced Oil Recovery (EOR) Processes and Bioremediation of Oil-Contaminated Sites

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Section: The Degradation Ability Of Petroleum-degrading Active Bactermentioning

confidence: 88%

Section: Fig 1 the Biodegradation Efficiency Of The Strains Evaluatedmentioning

confidence: 93%

Section: Fig 1 the Biodegradation Efficiency Of The Strains Evaluatedmentioning

confidence: 96%

“…The strains separated from the oil contaminated soil were SY 21 , SY 22 , SY 23 , SY 24 , SY 42 , SY 43 , and SY 44 [13] .…”

Section: The Source Of Samplesmentioning

confidence: 99%

See 2 more Smart Citations

Bioremediation of Crude Oil Contaminated Soil by Petroleum-Degrading Active Bacteria

Xu¹

2012

Introduction to Enhanced Oil Recovery (EOR) Processes and Bioremediation of Oil-Contaminated Sites

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“…Benzo[GHI]Perylene and chrysene were degraded completely (Table 5). Addition of bulking agent reduces remediation time for oil-contaminated soil by reducing the oil-saturated aggregates and thus making them available for microbial degradation (Rhykerd et al 1999). The addition of bulking agent might be reason for enhanced dehydrogenase activity, TPH and oil degradation as compared to control.…”

Section: T3 [A]: Effect Of Bioaugmentation Phytoremediation and Bulkmentioning

confidence: 99%

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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Soil Washing for Reduction of Aromatic and Aliphatic Contaminants in Soil

Gitipour

Hedayati²,

Madadian

2014

CLEAN Soil Air Water

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The extraction of crude oil worldwide is estimated to be about 4 billion tons annually, 10% of which leaks into the environment. Iran is in great risk of pollution because of the extensive natural oil reservoirs and the spread of the oil industry. During the past 10–15 years soil washing methods have gathered much attention due to their rapid and easy implementation and high clean up efficiencies in removing organic contaminants from polluted soils. This paper investigates the effects of soil washing at various temperatures and pH levels of the washing solutions on the removal of gasoline constituents from contaminated soils. Aliphatic and aromatic fractions of gasoline were studied for this purpose. Raw soil samples were spiked with gasoline for soil washing tests. Sodium dodecyl sulfate surfactant (with concentration of 1 g/L) was used as the washing solution for the samples. The results of this study indicate that an increase in both pH and temperature of the solution enhances the removal efficiencies of aliphatic and aromatic contaminants from soil samples. The removal efficiencies of aliphatic contaminants from coarse and fine fractions of the samples increased from 81.12 to 92.34% and 62.41 to 76.47%, as the temperature rose from 20 to 40°C, respectively. A nearly similar trend of increase was noted for the aromatic compounds. With regard to pH of the washing solutions, the removal efficiencies of the contaminants increased as the pH changed from 5.76 to 8.14. Thus, concluding that the implementation of soil washing is more efficient when the soil has naturally high pH values.

show abstract

Impact of bulking agents, forced aeration, and tillage on remediation of oil-contaminated soil

Cited by 113 publications

References 13 publications

Bioremediation of Crude Oil Contaminated Soil by Petroleum-Degrading Active Bacteria

Bioremediation of Crude Oil Contaminated Soil by Petroleum-Degrading Active Bacteria

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

Soil Washing for Reduction of Aromatic and Aliphatic Contaminants in Soil

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