Microbial digestion of organic contaminants is an in situ means for bio remediation that is currently under development and evaluation. Vegetable oil has been proposed as an agent to stimulate the natural microbial community. This system becomes anaerobic as the vegetable oil is consumed providing the necessary conditions for metabolizing volatile organic compounds (VOCs). In order for this process to be effective in remediating groundwater contamination, the vegetable oil must be introduced into contamination either directly or by creating a “curtain” down gradient.

There are several ways in which such a remediation can fail. One of these is that the...

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