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Large Scale Bioventing Degradation Rates of Petroleum Hydrocarbons and Determination of Scale-up Factors

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Title: Large Scale Bioventing Degradation Rates of Petroleum Hydrocarbons and Determination of Scale-up Factors
Author: Mosco, Michael James
Department: School of Engineering
Program: Engineering
Advisor: Zytner, Richard G.
Abstract: 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. The application of this technology in a field environment still has some uncertainties associated with it in regards to length of remediation period. An 80kg soil reactor system was developed, consisting of custom made reactor, climate chamber, low flow venting system and an off gas capture device. A sandy and a clayey soil were tested with known concentrations of spiked synthetic gasoline. Environmental conditions monitored 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 at a 4kg scale. Research at an 80kg laboratory scale is feasible, yet not always necessary for the development of scale-up factors. In the study with aged soil contaminants, degradation rates were significantly reduced.
URI: http://hdl.handle.net/10214/9889
Date: 2016-08
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