What is Bioventing

Bioventing is an in-situ remediation technology that uses indigenous microorganisms to biodegrade organic constituents adsorbed to soils in the unsaturated zone. … When extraction wells are used for bioventing, the process is similar to soil vapor extraction (SVE).

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 do you mean by bioremediation?

Bioremediation is a process that uses mainly microorganisms, plants, or microbial or plant enzymes to detoxify contaminants in the soil and other environments.

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.

How long is Bioventing?

Bioventing is a medium- to long-term technology. Typical cleanup can range from 6 months to 5 years.

What is bioremediation Upsc?

Bioremediation: It can be defined as any process that uses microorganisms or their enzymes to remove and or neutralize contaminants within the environment to their original condition.

Where is Bioventing used?

Bioventing is most often used at sites with mid-weight petroleum products (i.e., diesel fuel and jet fuel), because lighter products (i.e., gasoline) tend to volatilize readily and can be removed more rapidly using SVE.

What is Biopile treatment?

Biopiling is a full-scale technology in which excavated soils are piled and typically constructed in a treatment area that consists of a leachate collection and aeration system. It is commonly applied to reduce concentrations of petroleum components in soils through utilising the process of biodegradation.

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.

Where is the unsaturated zone?

The unsaturated zone, immediately below the land surface, contains water and air in the open spaces, or pores. The saturated zone, a zone in which all the pores and rock fractures are filled with water, underlies the unsaturated zone.

Article first time published on askingthelot.com/what-is-bioventing/

What is bioremediation give two examples?

Answer: Some examples of bioremediation related technologies are phytoremediation, mycoremediation, bioventing, bioleaching, landfarming, bioreactor, composting, bioaugmentation, rhizofiltration, and biostimulation.

What is bioremediation class 12 biology?

Bioremediation is the process of removing or utilizing the pollutants from a particularly polluted area (like soil, municipal water tanks or sewage water, oil spills in water, or land) by the help of microorganisms like bacteria, fungi and also plants.

Is bioremediation good or bad?

Bioremediation is when we get organisms to use their natural processes to metabolize environmental pollutants. It’s a great option for assisting us in cleaning up our environmental messes. If we can support the metabolism of the biological organisms metabolizing the contaminants then we are good to go.

What is biostimulation used for?

Biostimulation involves the modification of the environment to stimulate existing bacteria capable of bioremediation. This can be done by addition of various forms of rate limiting nutrients and electron acceptors, such as phosphorus, nitrogen, oxygen, or carbon (e.g. in the form of molasses).

What is Exsitu bioremediation?

Ex-situ bioremediation is a biological process in which excavated soil is placed in a lined above-ground treatment area and aerated following processing to enhance the degradation of organic contaminants by the indigenous microbial population.

What is composting in bioremediation?

Compost bioremediation refers to the use of a biological system of micro-organisms in a mature, cured compost to sequester or break down contaminants in water or soil. … The contaminants are digested, metabolized, and transformed into humus and inert byproducts, such as carbon dioxide, water, and salts.

What is natural attenuation?

Natural attenuation relies on natural processes to decrease or “attenuate” concentrations of contaminants in soil and groundwater. … The entire process is called “monitored natural attenuation” or “MNA.” Natural attenuation occurs at most contaminated sites.

What is bioremediation PPT?

1. BIOREMEDIATION PRESENTED BY R.PRIYA. BIOREMEDIATION Bioremediation refers to the process of using microorganisms to remove the environmental pollutants or prevent pollution. The removal of organic wastes by microbes for environmental clean-up is the essence of bioremediation.

How is bioremediation done?

Bioremediation relies on stimulating the growth of certain microbes that utilize contaminants like oil, solvents, and pesticides for sources of food and energy. … Bioremediation can either be done “in situ”, which is at the site of the contamination itself, or “ex situ,” which is a location away from the site.

What bacteria is used in bioremediation?

Deinococcus radiodurans is a radiation-resistant extremophile bacterium that is genetically engineered for the bioremediation of solvents and heavy metals.

Why bioremediation is called triple corner process?

BIOREMEDIATION IS A TRIPLE-CORNERS PROCESS Anaerobic or aerobic metabolism involve oxidation and reduction reactions or Redox reactions for detoxification. Oxygen could be reduced to water and oxidize organic compounds. Anaerobic reaction can use nitrate. In return, biomass is gained for bacterial or fungal growth.

What are 2 types of bioremediation?

  • Microbial bioremediation uses microorganisms to break down contaminants by using them as a food source.
  • Phytoremediation uses plants to bind, extract, and clean up pollutants such as pesticides, petroleum hydrocarbons, metals, and chlorinated solvents.

What is a benefit of phytoextraction?

Cheaper than most clean-up methods. In comparison to conventional methods which typically disrupt soil structure and productivity, phytoextraction is capable of remediating heavily metal contaminated soil without impairing the soil quality.

Why is phytoextraction important?

The use of crops in phytoextraction can be improved by manipulation of their associated soil microbes. Inoculation of plant growth promoting bacteria (PGPR) and AMF can increase plant biomass. The AMF-plant symbiosis usually results in reduced accumulation of metals in the aboveground biomass of plants.

How is phytoextraction used to extract metals?

Phytoextraction makes use of this to extract metals: … the plants absorb metal ions through their roots and concentrate these ions in their cells. the plants are harvested and burnt. the ash left behind contains a higher concentration of the metal than the original ore.

What is the role of Biosparging in 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 bioremediation Slideshare?

Bioremediation is the a biological degrading processes for the treatment of contaminated soils, groundwater and/or sediments, relying on microorganisms including bacteria and/or fungi to use the contaminant(s) as a food source with resulting degradation of the contaminant.

How does in situ bioremediation differ from ex situ bioremediation?

In in situ bioremediation, contaminants are treated at the same site using biological systems. In ex situ bioremediation, contaminants are treated in some other place from the original site. This is the key difference between in situ and ex situ bioremediation.

What is unsaturated zone in soil?

The unsaturated zone is that portion of the subsurface in which the intergranular openings of the geologic medium contain both water and air. The unsaturated zone, also known as the vadose zone or the zone of aeration, extends downward from the land surface to the top of the underlying saturated zone .

Why is the unsaturated zone important?

As a zone of human activity, the unsaturated zone is critical to the cultivation of plants, construction of buildings, and disposal of waste. The flow rate of water is often directly of interest, for example in estimating how fast water moves down to the water table, that is the aquifer recharge rate.

Does water flow in the unsaturated zone?

The unsaturated zone is the portion of the subsurface above the groundwater table. The soil and rock in this zone contains air as well as water in its pores. Hydrologically, the unsaturated zone is often the main factor controlling water movement from the land surface to the aquifer. …