A Correlation to Estimate the Bioventing Degradation Rate Constant

Eyvazi, M. Jedari; Zytner, Richard G.

doi:10.1080/10889860903127035

Cited by 15 publications

(65 citation statements)

References 35 publications

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“…For this research project two different types of soil were used. Soil from the Delhi Research Station, Delhi, Canada and the Elora Research Station, Elora, Canada were selected as they had been previously used in the bioventing soil vapour studies by Eyvazi and Zytner (2009) and Khan and Zytner (2013). Using the same soils allowed for a more accurate development of scale-up factors for bioventing SVE using the larger 80 kg reactors.…”

Section: Soil Collectionmentioning

confidence: 99%

“…Past research has led to the development of scale-up factors between experiments using different size reactors (Eyvazi and Zytner, 2009;Khan et al, 2015). However, it is unclear if these scale-up factors can be directly applied to scaling up an experimental design and applying it to the data in the field.…”

Section: Introductionmentioning

confidence: 99%

“…The resulting scaleup factor was 1.8 ±0.5. In addition, a further refinement of the correlation developed by Eyvazi and Zytner (2009) came through the completion of Khan and Zytner's (2013) work on the 4 kg reactor bioventing soil remediation project.…”

Section: Introductionmentioning

confidence: 99%

“…The study conducted by Ko (2007) suggests that field scale biodegradation is slower than the results found in the laboratory, partially due to decreased chemical diffusion in the soil, which in turn makes the contaminant less accessible to the biodegraders. Eyvazi and Zytner (2009) developed a degradation rate correlation based on the type of soil grain, water content and organic matter in the soil. This correlation was developed based on laboratory research and applied to the seven classes of soil that Eyvazi and Zytner (2009) studied, with each reactor holding 200 g of soil.…”

Section: Introductionmentioning

confidence: 99%

“…This correlation was developed based on laboratory research and applied to the seven classes of soil that Eyvazi and Zytner (2009) studied, with each reactor holding 200 g of soil. Khan and Zytner (2013) used the correlation developed by Eyvazi and Zytner (2009) and conducted meso-scale experiments using 4 kg reactors which allowed for the development of a scale-up factor between the two experiments. The resulting scaleup factor was 1.8 ±0.5.…”

Section: Introductionmentioning

confidence: 99%

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Large-scale bioventing degradation rates of petroleum hydrocarbons and determination of scale-up factors

Mosco

Zytner

2017

Bioremediation Journal

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Bioventing is a cutting edge, non-destructive treatment method that uses indigenous soil microorganisms in-situ to remediate petroleum hydrocarbons in the unsaturated soil zone.Transferring the application of this technology to a field environment still has some uncertainties due to scale-up challenges. In order to identify the scale-up factor, a 80 kg soil reactor system was developed, consisting of a custom made reactor, climate chamber, low flow venting system and an off gas capture device. Sandy and clayey soils were tested with known concentrations of spiked synthetic gasoline. Various environmental conditions were monitored which included: moisture levels, pH, microbial levels, nutrient and oxygen levels. Results show a second stage degradation rate similar to the degradation rate obtained from research conducted with a 4 kg reactor, giving an average scale-up factor of 2.3±0.4. The completed research shows that working with a 80 kg laboratory reactor is feasible, yet not always necessary for the development of scale-up factors. A complimentary study with aged soil contaminants was preformed and yielded degradation rates that were significantly reduced.

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Section: Soil Collectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%