Natural attenuation of MTBE and BTEX compounds in a petroleum contaminated shallow coastal aquifer

Gelman, Faina; Binstock, Ruth

doi:10.1007/s10311-007-0125-y

Cited by 23 publications

(6 citation statements)

References 13 publications

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“…This means the environmental contaminants are undisturbed while natural attenuation works on them. Natural attenuation processes are often categorized as destructive or non-destructive (Gelman and Binstock 2008). Destructive processes destroy the contaminant, while non-destructive processes cause a reduction in contaminant concentrations (Khan et al 2004).…”

Section: Natural Attenuationmentioning

confidence: 99%

A comprehensive overview of elements in bioremediation

Juwarkar

Singh

Mudhoo

2010

Rev Environ Sci Biotechnol

305

128

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Sustainable development requires the development and promotion of environmental management and a constant search for green technologies to treat a wide range of aquatic and terrestrial habitats contaminated by increasing anthropogenic activities. Bioremediation is an increasingly popular alternative to conventional methods for treating waste compounds and media with the possibility to degrade contaminants using natural microbial activity mediated by different consortia of microbial strains. Many studies about bioremediation have been reported and the scientific literature has revealed the progressive emergence of various bioremediation techniques. In this review, we discuss the various in situ and ex situ bioremediation techniques and elaborate on the anaerobic digestion technology, phytoremediation, hyperaccumulation, composting and biosorption for their effectiveness in the biotreatment, stabilization and eventually overall remediation of contaminated strata and environments. The review ends with a note on the recent advances genetic engineering and nanotechnology have had in improving bioremediation. Case studies have also been extensively revisited to support the discussions on biosorption of heavy metals, gene probes used in molecular diagnostics, bioremediation studies of contaminants in vadose soils, bioremediation of oil contaminated soils, bioremediation of contaminants from mining sites, air sparging, slurry phase bioremediation, phytoremediation studies for pollutants and heavy metal hyperaccumulators, and vermicomposting.

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Section: Natural Attenuationmentioning

confidence: 99%

A comprehensive overview of elements in bioremediation

Juwarkar

Singh

Mudhoo

2010

Rev Environ Sci Biotechnol

305

128

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“…Chronic contamination of groundwater by anthropogenic pollutants originating from industrial, municipal, and agricultural activities is a growing environmental challenge. For example, the Israeli coastal aquifer is contaminated with a number of persistent organic pollutants (POPs) such as explosives, volatile solvents, pesticides, and petroleum products. , As aquifers are often considered as a vital water supply reservoir with multiyear storage capacity, the release of POPs into groundwater requires remedial actions.…”

Section: Introductionmentioning

confidence: 99%

Ozone Consumption by Soils: A Critical Factor in In Situ Ozonation Processes

et al. 2021

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In situ chemical ozonation (ISCO 3 ), in which gaseous ozone is being injected into the subsurface, is a common method for remediating contaminated groundwater that is largely affected by the inevitable consumption of ozone by soil itself (rather than the target contaminants). In this study, ozone consumption by two main soil types of Israeli coastline aquifer was examined. Iron-rich soil showed considerably higher reactivity than did calcareous soil. We further investigated the effect of both physical and chemical soil characteristics on finite and catalytic ozone decay, hydroxyl-radical formation, and ozone transport behavior. Ozone consumption increased by >90% in the presence of fine soil particles (<100 μm), resulting from the large number of reactive sites and the higher content of ozone consumers compared to coarse soil particles. Soil organic matter consumed ozone twice as fast as iron components, promoted radical formation at higher rates, and mainly acted as a finite ozone consumer. In continuously fed column experiments, the reactions with iron components dominate catalytic ozone consumption during transport in porous media. Overall, this study demonstrates that the characterization of ozone reactions in soil can be helpful in evaluating the feasibility and efficiency of ISCO 3 and inform the design of ISCO 3 treatment, e.g., the need to inject additional radical promoters.

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“…On the other hand, increasing the vehicles number, caused more industrial waste production, such as heavy metals. According to their health disorders, it is necessary to manage this hazardous compounds (30). The heavy metals accumulated in earthworms tissues are analyzed in terms of concentration factors, such as the bioconcentration factors (BCFs) and the bioaccumulation factors (BAFs) with the assumption that the organisms have achieved chemical equilibrium with respect to a particular media or route of exposure (8,30).…”

Section: Discussionmentioning

confidence: 99%

Feasibility Study of Chromium Removal from Paint Sludge with Biological Sludge, Using Vermicompost by Eisenia fetida (Case Study: Saipa Automotive Industry)

Avili

Takdastan

Atabi

et al. 2018

Jundishapur J Health Sci

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Background: During the paint spraying process in the automotive industry, a variety of wastes, including a large amount of paint sludge is produced, which contains a variety of hazardous substances, such as BTEX and heavy metals. The aim of the present study was vermicomposting of paint sludge with sewage sludge and Eisenia fetida as earthworm spices for reduction of heavy metals. Objectives: Vermicomposting process employing earthworms is increasingly being used for conversion of both sewage and some industrial wastes to reduced heavy metals and volatile solid content in bulk of solid wastes. Therefore, in this study, feasibility of chromium removal from paint sludge by using Eisenia fetida worms was investigated. Methods: In this study, the quantitative and qualitative characteristics of paint and biological sewage sludge waste were determined in terms of Cr +6 , moisture content, nitrogen and carbon, C/N ratio, pH and temperature. Then the paint sludge was mixed in various proportions with the thickening biological sewage sludge of Saipa's sewage treatment plant. The decomposition time for the vermicompost samples for each run was 90 days. In order to analyze various parameters, including Cr +6 and volatile solids reduction, sampling from each pilot was performed on 1, 15, 30, 50, 70 and 90 days. The Cr +6 measurements were performed using the AASM method. The paint sludge and sewage sludge were mixed in different ratios. After the mixing, 500 adult Eisenia fetida earthworms were introduced to each box. Results: The results showed that the optimum removal rate for Cr +6 was found in the mixing ratio of 6 kg of biological sludge with 600 g of paint sludge and in this ratio, the amount of Cr +6 concentration fell from 6 mg/kg to less than 0.2 mg/kg in 90 days. In addition, in the same ratio of sludge mixing, the C/N ratio ranged from about 27 on the first day to 14.3 on day 90 and the pH decreased from 7.8 on the first day to 7.3 on the 90 th day. Volatile solids decreased from 80.4% on the first day to 37% on the 90 th day. Conclusions: Vermicomposting is a good alternative for treating paint sludge with biological sludge, and is advantageous for reduction of pollutants purposes. Research was carried out on bioavailability of heavy metals such as Cr +6 during vermicomposting for 90 days using Eisenia fetida earthworms. Finally, the results showed that, Eisenia fetida could eliminate Cr +6 in low levels.

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Natural attenuation of MTBE and BTEX compounds in a petroleum contaminated shallow coastal aquifer

Cited by 23 publications

References 13 publications

A comprehensive overview of elements in bioremediation

A comprehensive overview of elements in bioremediation

Ozone Consumption by Soils: A Critical Factor in In Situ Ozonation Processes

Feasibility Study of Chromium Removal from Paint Sludge with Biological Sludge, Using Vermicompost by Eisenia fetida (Case Study: Saipa Automotive Industry)

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