Field-Scale Modeling of Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX) Released from Multiple Source Zones

Vaezihir, Abdorreza; Zare, Mohammad; Raeisi, Ezzat; Molson, John; Barker, James

doi:10.1080/10889868.2012.687415

Cited by 18 publications

(5 citation statements)

References 22 publications

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“…Studies have found that even small amounts of metals can signi cantly decrease the biodegradation of oil products (Zukauskaite et al 2008). Research about the impacts of heavy metals on the biodegradation of hydrocarbons such as toluene and benzene is essential for advancing bioremediation strategies (Weelink et al 2010;Vaezihir et al 2012).…”

Section: )mentioning

confidence: 99%

Lead or Cadmium Co-Contamination Alters Benzene and Toluene Degrading Bacterial Communities

Konya

Fiddler

Bunch

et al. 2022

Preprint

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Co-contamination of hydrocarbons with heavy metals in soils often complicates and hinders bioremediation. A comprehensive characterization of site-specific degraders at contaminated sites can help determine if in situ bioremediation processes are sufficient. This study aimed to identify differences in benzene and toluene degradation rates and the microbial communities enriched under aerobic conditions when different concentrations of Cd and Pb are introduced. Microcosms were used to study the degradation of 0.23 mM benzene or 0.19 mM toluene under various concentrations of Pb (up to 240 µM) and Cd (up to 440 µM). Soil collected from a stormwater retention basin receiving runoff from a large parking lot was utilized to seed the microcosms. The hydrocarbon degradation time and rates were measured. After further rounds of amendment and degradation of benzene and toluene, 16S rRNA gene amplicon sequencing and quantitative PCR were used to ascertain the microbial communities enriched under the various concentrations of the heavy metals. The initial degradation time for toluene and benzene was 7 to 9 days and 10 to 13 days, respectively. Degradation rates were similar for each hydrocarbon despite the concentration and presence of metal co-contaminant, however, the enriched microbial communities under each condition differed. Microcosms without metal co-contaminant contained a diversity of putative benzene and toluene degrading bacteria. Cd strongly reduced the richness of the microbial communities. With higher levels of heavy metals, genera such as Ralstonia, Cupriavidus, Azoarcus, and Rhodococcus became more dominant under various conditions. The study finds that highly efficient benzene- and toluene-degrading consortia can develop under variations of heavy metal co-contamination, but the consortia are dependent on the heavy metal type and concentrations.

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Section: )mentioning

confidence: 99%

Lead or Cadmium Co-Contamination Alters Benzene and Toluene Degrading Bacterial Communities

Konya

Fiddler

Bunch

et al. 2022

Preprint

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“…Metals (Okumus et al 2015;Dutta et al 2017;Aka and Babalola 2017), and hydrocarbons (Mutharasaiah et al 2011;Yao et al 2014;Suarez and Rifai 1999) have received much attention from Journal authors, as have agricultural practices and waste products (Ramarajan and Manohar 2017), manufacturing wastes (Khan et al 2014), and the abundance and biodegrading potential of marine organisms (Khosrowabadi and Huyop 2013). Models of various environmental mechanisms and processes were developed by a number of authors over the years (Farhan and Hatzinger 2009;Vaezihir et al 2012;Das Saha 2012;Tripathi and Kumar Garg 2014;Ling et al 2004) and others addressed solid wastes and their degradability using microorganisms (Garg and Gupta 2011). The depth and breadth of topics related to the SDGs listed above that have been studied by Journal authors since 1997 is very extensive and indicative of a keen interest in sustainability using biotechnology.…”

Section: What a Difference One Year Makes!mentioning

confidence: 99%

The sustainable development goals in a bioremediation journal context: what a difference a year makes in a post COVID-19 world!

Rifai¹

2020

Bioremediation Journal

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“…At the field scale, NAPL migration is controlled by a complex combination of aquifer properties, NAPL properties, and other macro-scale features such as released volume of NAPL, local pumping effects and lithology (Mercer and Cohen, 1990;Divine et al, 2004). Therefore, sitespecific mathematical models are necessary for investigating the dissolution and transport of NAPL compounds, which largely depend on the nature of the contaminant source and the initial fuel composition (Ostendorf and Kampbell, 1991;Zhu and Sykes, 2000;Vaezihir et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Scenario-based modelling of mass transfer mechanisms at a petroleum contaminated field site-numerical implications

Vasudevan¹,

Nambi

Kumar

2016

Journal of Environmental Management

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Field-Scale Modeling of Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX) Released from Multiple Source Zones

Cited by 18 publications

References 22 publications

Lead or Cadmium Co-Contamination Alters Benzene and Toluene Degrading Bacterial Communities

Lead or Cadmium Co-Contamination Alters Benzene and Toluene Degrading Bacterial Communities

The sustainable development goals in a bioremediation journal context: what a difference a year makes in a post COVID-19 world!

Scenario-based modelling of mass transfer mechanisms at a petroleum contaminated field site-numerical implications

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