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