An assessment of subsurface contamination of an urban coastal aquifer due to oil spill

Nambi, Indumathi M.; Rajasekhar, Bokam; Loganathan, Vijay A.; Ravikrishna, R.

doi:10.1007/s10661-017-5833-6

Cited by 31 publications

(4 citation statements)

References 26 publications

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“…The contained liquid-gaseous proportion was projected into low explosion limit (LEL) indication to avoid fire accidents and eventually assist in efficient periodic corrective action selection. An electrical resistivity visualization technique was unveiled to target subsurface oil pollution spots around coastal cities in India [65]. This was realized by applying a set of multi-gas sensors to identify the hydrocarbon level in soil vapour sampling.…”

Section: Petrol and Hydrocarbons Detection Techniquesmentioning

confidence: 99%

Review of Underground Storage Tank Condition Monitoring Techniques

et al. 2019

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This article aims to provide a comprehensive review on the condition monitoring techniques of underground storage tanks (UST). Generally, the UST has long been a favourite toxic substance reservation apparatus, thanks to its large capacity and minimum floor space requirement. Recently, attention has been drawn to the safety risks of the complex cylindrical-shaped system and its surrounding environment due to contamination resulting from unwanted subsurface leakage. Studies on related countermeasures shows that numerous efforts have been focused on the damage remediation process and fault detection practice; however, it has also been observed that there are uncertainties in present technical complications involving the effectiveness of corrective actions and the robustness of condition monitoring techniques. As an alternative means to deliver spatial information on structural integrity, the feasibility of integrating non- destructive evaluation (NDE) techniques with machine learning algorithms, on observing the degradation process of UST, so as to enhance condition monitoring competency, is discussed.

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Section: Petrol and Hydrocarbons Detection Techniquesmentioning

confidence: 99%

Review of Underground Storage Tank Condition Monitoring Techniques

et al. 2019

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“…[ 4 ] If the soil is exposed to too much oil, the spilled oil can reach the capillary fringe zone and eventually contaminate the groundwater. [ 5 ] Therefore, repairing oil pollution is imminent for global environmental protection.…”

Section: Introductionmentioning

confidence: 99%

Degrading characteristics of oil‐degrading bacteria and its study of petroleum hydrocarbon metabolites

Ma,

Zhu,

Liu

et al. 2023

CLEAN Soil Air Water

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Exploring the community characteristics of petroleum degrading bacteria and revealing the types of petroleum metabolites produced by degrading bacteria play an important role in solving the problem of oil pollution. In this study, the bacterial suspension was extracted from the sludge of the sewage treatment plant, and the efficient dominant bacteria were enriched and cultured by microbial screening. The optimal environmental conditions and kinetic behavior of microbial degradation of petroleum hydrocarbons in groundwater were discussed, and the metabolites of microbial degradation of petroleum hydrocarbons were analyzed. The results showed that the optimum degradation conditions of the strain were as follows: bacterial suspension inoculum: 2%, pH: 7, temperature: 30°C, initial concentration of contaminated water sample: 500 mg/L. Under these conditions, the microbial petroleum hydrocarbon degradation efficiency was 84.7% and followed the first‐order kinetics; qualitative and quantitative statistical analysis of the metabolites of the microbial degradation of petroleum hydrocarbons by gas chromatography‐time‐of‐flight mass spectrometry was performed. A total of 10 significantly upregulated products and 12 significantly downregulated products were screened, which were significantly different from the metabolites of the control group. Further microbial community analysis showed that Pseudomonas was dominant in the bacterial suspension, more than 99.5%, which was significantly different from the sludge sample, providing data support for the degradation of petroleum hydrocarbons by Pseudomonas. This study has provided a scientific basis for in situ remediation of petroleum pollution in groundwater.

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“…Volatile organic compounds (VOCs) generally enter the soil and groundwater from external sources [ 1 , 2 ]. Most oil-contaminated sites are found in or near military bases, gas stations, and railroad depots [ 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Continuous VOCs Monitoring in Saturated and Unsaturated Zones Using Thermal Desorber and Gas Chromatography: System Development and Field Application

Baek

Hong

et al. 2022

IJERPH

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Subsurface VOC monitoring has been mainly based on manual sampling, transport, and analysis, which would require a sufficient amount of samples to ensure data accuracy and reliability, and additional costs to ensure sample quality. Therefore, a continuous on-site monitoring system is desirable for accurate measurement and subsequent risk assessment. In this study, benzene, toluene, ethylbenzene, and xylene (BTEX) were continuously monitored by the system based on a thermal desorber (TD) and gas chromatography (GC) in an oil-contaminated site that consisted of saturated and unsaturated zones. For the saturated zone, fully automated groundwater sampling and purging processes were performed, and the gasified samples were applied to the TD–GC system. For the unsaturated zone, the gaseous sample in the site was directly applied to the TD–GC system. After verifying the accuracy and precision of the monitoring system, the continuous monitoring system was successfully operated for more than a month in the field. The monitoring system used in this study is applicable to other sites for continuous monitoring, thus providing a scientific background for advanced risk assessment and policy development.

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An assessment of subsurface contamination of an urban coastal aquifer due to oil spill

Cited by 31 publications

References 26 publications

Review of Underground Storage Tank Condition Monitoring Techniques

Review of Underground Storage Tank Condition Monitoring Techniques

Degrading characteristics of oil‐degrading bacteria and its study of petroleum hydrocarbon metabolites

Continuous VOCs Monitoring in Saturated and Unsaturated Zones Using Thermal Desorber and Gas Chromatography: System Development and Field Application

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