BIOREMEDIATION OF OIL-CONTAMINATED SOIL BY LANDFARMING: ASSESSMENT OF SOIL QUALITY USING A FIELD TEST KIT. H.M. Edenborn1, K.A. The biological removal of petroleum products using landfarming has been applied commercially in large scale with relative success. The technology has been. PDF | Landfarming is an attractive bioremediation treatment approach for soils contaminated with polycyclic aromatic hydrocarbons (PAHs).
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As a rule of thumb, the higher the molecular weight i. The more chlorinated or nitrated the compound, the more difficult it is to degrade. Soil conditions are controlled to optimize the rate of contaminant degradation.
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The depth of treatment is limited to the depth of achievable tilling normally 18 inches. Land farming is considered a commercial technology.
Applicability Land farming has been proven most successful in treating petroleum hydrocarbons and other less volatile, biodegradable contaminants.
Land farming has been proven most successful in treating petroleum hydrocarbons and other less volatile, biodegradable contaminants. If it cannot be shown that biodegradation occurs for all contaminants of concern, land farming should not be used.
Therefore, the rate at which contaminants are degraded must be balanced with the potential of creating a larger body of contamination. Land farms must not be used to dilute contaminants. Contaminated soilssedimentsor sludges are transported to the landfarming site, incorporated into the soil surface and periodically turned over tilled to aerate the mixture. Land Farming differs from composting because it actually incorporates contaminated soil into soil that is uncontaminated.
Conditions affecting biological degradation of contaminants e. Runoff collection facilities must be constructed and monitored. Dust control is an important consideration, especially during tilling operations.
The possible leaching of contaminants from the contaminated soil into the ground and groundwater is a major concern. Many waste constituents may be banned by regulation from being applied to soil. Introduction to Hazardous Waste Incineration. Contaminated soils are mixed with soil amendments such as soil bulking agents and nutrients, and then they are tilled into the earth.
Landfarming – Wikipedia
Landfarming is an ex-situ waste treatment process that is performed in the upper soil zone or in bioremediationn cells. Composting also generally takes place in aboveground piles.
Limitations and Concerns A bioremfdiation farm must be managed properly to prevent both on-site and off-site problems with ground water, surface waterair, and food chain contamination. A large amount of space is required. Views Read Edit View history. Army Environmental Center, MD: Land Farming incorporates contaminated soil into soil that is uncontaminated, creating a larger volume of contaminated material.
A land farm bioremediatioh be managed properly to prevent both on-site and off-site problems with ground water, surface waterair, and food chain contamination.
Technology Development Status Numerous full-scale operations have been conducted, particularly for sludges produced by the petroleum industry. This page was last edited on 26 Augustat Contaminants are degraded, transformed, and immobilized by microbiological processes and by oxidation.
The material is periodically tilled for aeration. Many mixed products and wastes include buoremediation volatile components that transfer to the atmosphere before they can be degraded. Retrieved from ” https: Inorganic contaminants will not be biodegraded, but they may be immobilized. Numerous full-scale operations have been conducted, particularly for sludges produced by the petroleum industry.