What is meant by Bioventing?
Bioventing is a technology that stimulates the natural in situ biodegradation of any aerobically degradable compounds in soil by providing oxygen to existing soil microorganisms.
What is biostimulation used for?
Biostimulation involves the modification of the environment to stimulate existing bacteria capable of bioremediation.
What is meant by Phytoextraction?
The use of plants to remove contaminants from the environment and concentrate them in above-ground plant tissue is known as phytoextraction.
What is Biopile remediation?
Description. A bio-pile is a bioremediation technology in which excavated soils are mixed with soil amendments, formed into compost piles, and enclosed for treatment. The basic bio-pile system includes a treatment bed, an aeration system, an irrigation/nutrient system and a leachate collection system.
What is the difference between Biosparging and bioventing?
Bioventing is the aeration of the unsaturated vadose zone to stimulate aerobic biodegradation. Biosparging is the injection of air into the groundwater to provide oxygen for groundwater remediation.
What is bioremediation Upsc?
Bioremediation is the use of microorganisms (bacteria and fungi) to degrade the environmental contaminants into less toxic forms. The microorganisms may be indigenous to a contaminated area or they may be isolated from elsewhere and brought to the contaminated site.
What is Bioaugmentation used for?
Bioaugmentation is used to biodegrade specific soil and groundwater contaminants. It involves adding cultured microorganisms into the subsurface to biodegrade the desired contaminants. In many cases, these microorganisms are “specialists” in degrading specific target contaminants.
What are bio stimulants?
Biostimulant: A plant biostimulant is any substance or microorganism applied to plants with the aim to enhance nutrition efficiency, abiotic stress tolerance and/or crop quality traits, regardless of its nutrients content.
What is plant Hyperaccumulation?
The ability of plants to uptake heavy metals from contaminated soil and accumulate them within themselves to a higher level than in the contaminated soil is called hyperaccumulation.
What is Phytomining used for?
Phytomining is used to extract copper from soil containing its ore. reduces the need to obtain new ore by mining.
What is the role of Biosparging in bioremediation?
Microbial Bioremediation Biosparging: This involves the injection of air under pressure below the water table to increase ground water oxygen concentrations and to enhance the rate of biological degradation of contaminants by naturally occurring bacteria.
What is the difference between Biosparging and Bioventing?
What is phytostabilization in agriculture?
In phytostabilization, soil contaminants are immobilized through absorption by roots, adsorption onto root surface and precipitation within the area of plant roots. As such, the plant and plant roots are employed to prevent the spread or migration of contaminants through wind and water erosion, soil dispersion and leaching.
How does phytostabilization influence the mobility of metal contaminants?
Phytostabilization influences the contaminant’s mobility in several ways: • The amendments directly change the soil condition that influences the mobility of metal contaminants (acidic or alkaline conditions, organic matter, oxygen levels). For example, a soil’s pH have an effect on the retention and mobility of metals in soil columns.
How can we reduce the costs of phytostabilization?
Modeling phytostabilization systems. Since plants on each contaminated site comprise a unique ecosystem, experiments are required to determine both the feasibility and costs of phytostabilization. Full-system models could reduce these costs.
What is phytovolatilization?
Similarly, the technique in which plants are used to remove contaminants through volatilization is called phytovolatilization ( Moreno et al ., 2005 ). In phytostabilization, inorganic contaminants such as heavy metal (loid)s in the soil are immobilized, thereby minimizing their transport in water or dust.