Question: What Is Biosparging
Asked by: Mr. Dr. Laura Brown Ph.D. | Last update: September 9, 2021star rating: 4.8/5 (95 ratings)
Biosparging is an in-situ remediation technology that uses indigenous microorganisms to biodegrade organic constituents in the saturated zone. In biosparging, air (or oxygen) and nutrients (if needed) are injected into the saturated zone to increase the biological activity of the indigenous microorganisms.
What is the difference between bioventing and Biosparging?
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 do you mean by bioventing?
Bioventing is an in-situ remediation technology that uses indigenous microorganisms to biodegrade organic constituents adsorbed to soils in the unsaturated zone. In practice, some degree of volatilization and biodegradation occurs when either SVE or bioventing is used.
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 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 is an example of Bioaugmentation?
An example of how bioaugmentation has improved an environment, is in the coke plant wastewater in China. In the enhanced microbial community indigenous microorganisms broke down the contaminants in the coke plant wastewater, such as pyridines, and phenolic compounds.
What is the meaning of Rhizofiltration?
Rhizofiltration is the adsorption onto plant roots or absorption into plant roots of contaminants that are in solution surrounding the root zone (rhizosphere). Rhizofiltration is used to decontaminate groundwater. Contaminated water from the site is used to acclimatize the plants to the environment.
How is bioventing done?
Bioventing is a technique used to add oxygen directly to a site of contamination in the vadose zone (unsaturated zone). In bioventing alone, air is injected at very low flow rates into the contaminated zone to promote biodegradation.
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.
How does Rhizofiltration work?
Rhizofiltration is a form of phytoremediation that involves filtering contaminated groundwater, surface water and wastewater through a mass of roots to remove toxic substances or excess nutrients.
What are the types of bioremediation?
Some of the most common types of bioremediation are microbial bioremediation, phytoremediation, and mycoremediation. However, the word bioremediation has evolved in recent years to include biohazard removal and crime scene cleanup services.
What is phytoremediation process?
Phytoremediation is a plant-based approach, which involves the use of plants to extract and remove elemental pollutants or lower their bioavailability in soil (Berti and Cunningham, 2000). Plants have the abilities to absorb ionic compounds in the soil even at low concentrations through their root system.
What is Landfarming remediation?
Landfarming is an ex-situ waste treatment process that is performed in the upper soil zone or in biotreatment cells. Contaminated soils, sediments, or sludges are transported to the landfarming site, mixed into the soil surface and periodically turned over (tilled) to aerate the mixture.
What is the difference between bioaugmentation and bioremediation?
As nouns the difference between bioremediation and bioaugmentation. is that bioremediation is (biochemistry) the use of biological organisms, usually microorganisms, to remove contaminants, especially from polluted water while bioaugmentation is the use of microorganisms to help decompose pollutants.
What are the factors affecting bioaugmentation?
Some of the noted parameters or factors that influence the process of bioaugmentation are pH, temperature, moisture, organic matter content, aeration, nutrient content and soil type. Lack of any of these soil parameters under natural condition makes the remediation process inefficient.
What is genetic bioaugmentation?
Genetic bioaugmentation is an in situ bioremediation method that stimulates horizontal transfer of catabolic plasmids between exogenous donor cells and indigenous bacteria to increase the biodegradation potential of contaminants.
What are bioaugmentation limitations?
The major drawbacks for the successful application of cell bioaugmentation are the (i) frequently very high mortality of the inoculated microbial strains, due to biotic or abiotic stresses, and (ii) limited dispersal of such strains throughout the soil matrix (Pepper et al., 2002; Quan et al., 2010).
What are three examples of bioremediation?
3 Examples of Bioremediation Crime scene cleanup. Bioremediation in this sense involves the cleanup of blood and bodily fluids that can pose health risks such as hepatitis, HIV, and MRSA. The cleanup of contaminated soil. Oil spill cleanup.
When has bioremediation been used?
Bioremediation was used extensively to combat the devastating effects of the Exxon Valdez oil spill in 1989 and British Petroleum's Deepwater Horizon oil spill in 2010. In both oil spills, microorganisms were used to consume petroleum hydrocarbons and played a significant role in reducing the environmental impact.
How do Hyperaccumulators work?
A hyperaccumulator is a plant capable of growing in soil or water with very high concentrations of metals, absorbing these metals through their roots, and concentrating extremely high levels of metals in their tissues.
What is Phyto degradation?
Phytoremediation basically refers to the use of plants and associated soil microbes to reduce the concentrations or toxic effects of contaminants in the environment. Phytoremediation is widely accepted as a cost-effective environmental restoration technology.
What does Phytostimulation mean?
Phytostimulation, also referred to as enhanced rhizosphere biodegradation, rhizodegradation, or plant-assisted bioremediation/degradation, is the breakdown of organic contaminants in the soil via enhanced microbial activity in the plant root zone or rhizosphere.
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 biodegradation process?
In biodegradation processes, a chemical compound is transformed or eliminated by the biological action of living organisms. In general terms, biodegradability is the tendency of a lubricant to be ingested and metabolized by microorganisms.
Which of the following contaminant is not suitable for phytoremediation?
Phytoremediation is not effective for strongly sorbed contaminants such as polychlorinated biphenyls (PCBs). Phytoremediation requires a large surface area of land for remediation.
