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The Effect of Age on Petroleum Hydrocarbon Contaminants in Soil for Bioventing Remediation

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Title: The Effect of Age on Petroleum Hydrocarbon Contaminants in Soil for Bioventing Remediation
Author: Xiao, Mei
Department: School of Engineering
Program: Engineering
Advisor: Zytner, Richard
Abstract: An investigation was completed on the effects of petroleum contaminant aging in bioventing, a low cost and non-destructive in situ remediation method. Predicting site closure times remains a challenge in field applications, where the aged compounds are known to be sorbed into the soil, decreasing their bioavailability. Wet soil spiked with a known concentration of synthetic gasoline was aged in a refrigerator for 300 days. 150 g respirometers and 80 kg bioventing reactor degradation experiments were performed. After aging, a constant degradation rate at the 80 kg scale, varying from 0.12 d^-1 to 0.133 d^-1, was observed. In the 150 g respirometer, there was an increase in biodegradation rate, from 0.0787 d^-1 to 0.1943 d^-1. Microbial acclimatization during the aging process of wet soil was a key factor in both experiment.
URI: http://hdl.handle.net/10214/12949
Date: 2018-04
Rights: Attribution-NonCommercial-NoDerivs 2.5 Canada


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Attribution-NonCommercial-NoDerivs 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 2.5 Canada