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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A land farm must be managed properly to prevent both on-site and off-site problems with ground water, surface waterair, and food chain contamination.
Booremediation material is periodically tilled for aeration. Conditions affecting biological degradation of contaminants e. Landfarming is an ex-situ waste treatment process that is performed in the upper soil zone or in biotreatment cells.
Landfarming – Wikipedia
The depth of treatment is limited to the depth of achievable tilling normally 18 inches. Soil conditions are controlled to optimize the landdarming of contaminant degradation. Land farming has been proven most successful in treating petroleum hydrocarbons and other less volatile, biodegradable contaminants. The possible leaching of contaminants from the contaminated soil into the ground and groundwater bioremeriation a major concern.
Runoff collection facilities must be constructed and monitored. Composting also generally takes place in aboveground piles. Also, the more chlorinated or nitrated the compound, the more difficult it is to degrade. Views Read Edit View history.
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Land Farming incorporates contaminated soil into soil that is uncontaminated, creating a larger volume bioremedkation contaminated material. The equipment employed in land farming is typical of that used in agricultural operations. Land farms must not be used to dilute contaminants.
These land farming activities cultivate and enhance microbial degradation of hazardous compounds. Land Farming differs from composting because it actually incorporates contaminated soil into soil that is uncontaminated.
Land Farming is a bioremediation technology. Hydrocarbon compounds that have been identified as being not readily degraded by land farming landfaarming creosotepentachlorophenol PCPand bunker C oil.
Many waste constituents may be banned by regulation from being applied to soil. Limitations and Concerns A land farm must be managed properly to prevent both on-site and off-site problems with ground water, surface bioremediatinoair, and food chain contamination. Introduction to Hazardous Waste Incineration.
This page was last edited on 26 Augustat Retrieved from ” https: Contaminants that have been successfully treated include diesel fuel, No. The more chlorinated or nitrated the compound, the more difficult it is to degrade. From Wikipedia, the free encyclopedia. As a rule of thumb, the higher the molecular weight i. This technique has been used for years in the management and disposal of drill cuttingsoily sludge and other petroleum refinery wastes.
Contaminated soilssedimentsor sludges are transported to the landfarming site, incorporated into the soil surface and periodically turned over tilled to aerate the mixture. Numerous full-scale operations have been conducted, particularly for sludges produced by the petroleum industry.
Contaminated soils are mixed with soil amendments such as soil bulking agents and nutrients, and then they are tilled into the earth.
Land farming is considered a commercial technology. Inorganic contaminants will not be biodegraded, but they may be immobilized.
Army Environmental Center, MD: A large amount of space is required. Contaminants are degraded, transformed, and immobilized by microbiological processes and by oxidation. Technology Development Status Numerous full-scale operations have been conducted, particularly for sludges produced by the petroleum industry.
Land Farming Description Land Farming is a bioremediation technology. Dust control is an important consideration, especially during tilling operations. If it cannot be shown that biodegradation occurs for all contaminants of concern, land farming should not be used. Moisture content, frequency of aeration, and pH are all landfarminy that may be controlled. Applicability Land farming has been proven most successful in treating petroleum hydrocarbons and other less volatile, biodegradable contaminants.
Many mixed products and wastes include some volatile components that transfer to the atmosphere before they can be degraded.