Impact of Ethanol on Benzene Plume Lengths: Microbial and Modeling Studies

Deeb, Rula A.; Sharp, Jonathan O.; Stocking, Andrew J.; McDonald, Shane; West, Kimberlee A.; Laugier, Maryline; Alvarez, Pedro J. J.; Kavanaugh, Michael C.; Alvarez‐Cohen, Lisa

doi:10.1061/(asce)0733-9372(2002)128:9(868)

Cited by 39 publications

(40 citation statements)

References 13 publications

(2 reference statements)

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“…6 While 24 bioremediation (e.g., landfarming and windrowing) can contribute to the cleanup of 25 terrestrial oil spills, biodegradation of the heavy hydrocarbons that prevail after the oil is 26 weathered is difficult to accomplish. [7][8][9][10][11][12] These heavy hydrocarbons represent an 27 environmental hazard and a significant remediation challenge. 28…”

Section: Introduction 19mentioning

confidence: 99%

Pyrolytic Treatment and Fertility Enhancement of Soils Contaminated with Heavy Hydrocarbons

Vidonish

Zygourakis

Masiello

et al. 2016

Environ. Sci. Technol.

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Pyrolysis of contaminated soils at 420 °C converted recalcitrant heavy hydrocarbons into "char" (a carbonaceous material similar to petroleum coke) and enhanced soil fertility. Pyrolytic treatment reduced total petroleum hydrocarbons (TPH) to below regulatory standards (typically <1% by weight) within 3 h using only 40-60% of the energy required for incineration at 600-1200 °C. Formation of polycyclic aromatic hydrocarbons (PAHs) was not observed, with post-pyrolysis levels well below applicable standards. Plant growth studies showed a higher biomass production of Arabidopsis thaliana and Lactuca sativa (Simpson black-seeded lettuce) (80-900% heavier) in pyrolyzed soils than in contaminated or incinerated soils. Elemental analysis showed that pyrolyzed soils contained more carbon than incinerated soils (1.4-3.2% versus 0.3-0.4%). The stark color differences between pyrolyzed and incinerated soils suggest that the carbonaceous material produced via pyrolysis was dispersed in the form of a layer coating the soil particles. Overall, these results suggest that soil pyrolysis could be a viable thermal treatment to quickly remediate soils impacted by weathered oil while improving soil fertility, potentially enhancing revegetation.

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Section: Introduction 19mentioning

confidence: 99%

Pyrolytic Treatment and Fertility Enhancement of Soils Contaminated with Heavy Hydrocarbons

Vidonish

Zygourakis

Masiello

et al. 2016

Environ. Sci. Technol.

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“…The method provides a DL of µg/l similar that reported by O'Neill (45) in water sampling using the same detector. The presence of ethanol in groundwater may, however, decrease the biodegradation rates of benzene because ethanol is preferentially degraded (125)(126)(127)(128)(129).…”

Section: Determination Of Mtbe In Soilsmentioning

confidence: 99%

State of the Art in the Determination of MTBE in Natural Waters and Soils

Atienza

Aragón

Herrero

et al. 2005

Critical Reviews in Analytical Chemistry

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Methyl tert-buthyl ether (MTBE) is used as an oxygenate additive in gasoline, and in the last years contamination of natural water, soils or air has taken place as result of MTBE use. Furthermore, MTBE is the second most common volatile compound (VOC) detected in a survey of shallow urban aquifers. This review focuses on the most critical steps, for sample preparation methodologies from an analytical point of view. Several enrichment and injection techniques are discussed, including direct injection, headspace analysis, purge and trap and solid-phase microextraction. The methods for the determination of methyl tert-butyl ether (MTBE) in environmental samples have been rapidly developed during last decade. Also, the current status of the analytical methods used in the determination of MTBE in water and soil is reviewed including the compound-specific stable isotope analysis (CSIA), which is an important tool in environmental sciences and allows the allocation of contaminant sources.

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“…Often the tendency in these papers has been to study the effects of each concentration-dependent property on mass transport and flow separately. Systems that can exhibit non-passive transport include saline solutions (Boufadel et al 1997(Boufadel et al , 1999Weisbrod et al 2003;Zhang et al 2005), organic compounds such as oxygenate gasoline additives (Ferreira et al 2001;Da Silva and Alvarez 2002;Deeb et al 2002;McDowell and Powers 2003), some pesticides (Ouyang and Zheng 1999), and surfactant dissolutions Gillham 1994, 1999;Henry et al 1999Henry et al , 2001Karagunduz et al 2001;Smith 2002, 2006).…”

Section: Introductionmentioning

confidence: 99%

Non-passive Transport of Volatile Organic Compounds Infiltrated from a Surface Disk Source

Silva

Grifoll

2008

Transp Porous Med

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An unsaturated flow and non-passive transport model for water-soluble organic compounds has been implemented in cylindrical coordinates, with a top boundary condition that accounts for different zones of the surface that can be under infiltration or volatilization independently. We simulated two-dimensional infiltration of aqueous mixtures of methanol from a disk source, its redistribution and volatilization in both homogeneous and heterogeneous soils. Simulations showed that the incoming composition significantly affects volumetric liquid content and concentration profiles, as well as the fraction of infiltrated mass of methanol that is released to the atmosphere. Concentration-dependent viscosity had the major impact on the liquid flow. The differences in volumetric liquid content and normalized concentration of methanol became more pronounced during transport through a soil composed of a clay lens embedded within a main matrix of sandy clay loam texture. Dispersion in the liquid-phase was the predominant transport mechanism when dispersivity at saturation was set to 7.8 cm. However, for dispersivity of 1.0 cm, changes in composition led to changes in surface tension inducing significantly higher liquid flow. In this case, liquid-phase advection was the most active transport mechanism for homogeneous soils and highly concentrated infiltrating mixtures.

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Impact of Ethanol on Benzene Plume Lengths: Microbial and Modeling Studies

Cited by 39 publications

References 13 publications

Pyrolytic Treatment and Fertility Enhancement of Soils Contaminated with Heavy Hydrocarbons

Pyrolytic Treatment and Fertility Enhancement of Soils Contaminated with Heavy Hydrocarbons

State of the Art in the Determination of MTBE in Natural Waters and Soils

Non-passive Transport of Volatile Organic Compounds Infiltrated from a Surface Disk Source

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