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