U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

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Sharma, J. | Recent Advances in Biology and Medicine 5:955923(2019)

The major types of in situ bioremediation rely on natural processes to degrade contaminants with (enhanced) or without (intrinsic) amendments. Removal rates and extent vary based on the contaminant of concern and site-specific characteristics. There are a few factors and variables that affect the rate of removal such as contaminant and co-contaminant distribution as well as concentration; indigenous microbial populations and reaction kinetics; and parameters such as pH, moisture content, nutrient supply, and temperature. Many of these factors are a function of the site and the indigenous microbial community and, thus, are difficult to manipulate. Specific technologies may have the capacity to manipulate some variables and may be affected by other variables as well; these specific issues are discussed with each technology.

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