What is the goal of bioremediation?

What is the goal of bioremediation?

The goal of bioremediation is safe, natural, and time-efficient extraction of harmful pollutants that are present in our ecosystems through the use of hydrocarbon eating microbes.

What is an example of Bioaugmentation?

Biofiltration systems are commonly used for eliminating contaminants found in the soil or groundwater. Some examples of biofilters include treatment ponds, slow sand filters, and bioswales.

What is monitored natural attenuation?

What Is Monitored Natural Attenuation? Natural attenuation relies on natural processes to decrease or “attenuate” concentrations of contaminants in soil and groundwater. Scientists monitor these conditions to make sure natural attenuation is working.

What is difference between bioventing and Biosparging?

In bioventing, only carbon dioxide and clean air are vented and no volatile organic hydrocarbons (Frutos et al., 2010). On the other hand, biosparging involves applying air under pressure at low rates of flow to groundwater.

How is SVE different from bioventing?

When extraction wells are used for bioventing, the process is similar to soil vapor extraction (SVE). However, while SVE removes constituents primarily through volatilization, bioventing systems promote biodegradation of constituents and minimize volatilization (generally by using lower air flow rates than for SVE).

Who invented bioremediation?

Modern bioremediation was developed by petroleum engineer, George M. Robinson in the 1960s. He performed experiments with microbes placed in glass jars that contained pollutants. He tried adding different types of bacteria to the jars and realized that certain types worked to break the pollutant down.

What is the difference between biostimulation and bioaugmentation?

Bioaugmentation is the process of adding specific microorganisms to enhance the existing populations and promote biodegradation process while biostimulation is the process of adding electron acceptors, electron donors, or nutrients to stimulate naturally occurring microbial populations in the contaminated area.

What is difference between bioremediation and bioaugmentation?

The key difference between biodegradation and bioremediation is that biodegradation is a natural process that occurs in the environment. On the other hand, bioremediation is an engineered technique applied by humans to clean the environment.

What are MNA parameters?

MNA Performance Parameters The MNA performance parameters provide insight into the microbial and biogeochemical reactions. and processes that are occurring within the subsurface.

What is biostimulation used for?

Biostimulation refers to the addition of rate limiting nutrients like phosphorus, nitrogen, oxygen, electron donors to severely polluted sites to stimulate the existing bacteria to degrade the hazardous and toxic contaminants.

How is Biosparging done?

Biosparging consists of injecting pressurized air or gas into a contaminated zone in order to stimulate in situ aerobic biological activity. This remediation technique applies to dissolve and residual contamination in the saturated zone, and targets chemical compounds that can be biodegraded under aerobic conditions.

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.

How is bioventing done?

Bioventing generally is performed using blowers, a process referred to as active bioventing. However, at some sites, it may be possible to perform bioventing by relying on barometric changes or tidal fluctuations as opposed to using blowers; this process is commonly referred to as passive bioventing.

Who invented Bioaugmentation?

Bioremediation technology using microorganisms was reportedly invented by George M. Robinson. He was the assistant county petroleum engineer for Santa Maria, California. During the 1960s, he spent his spare time experimenting with dirty jars and various mixes of microbes.

Why is bioremediation bad?

Disadvantages of Bioremediation If the process is not controlled it is possible the organic contaminants may not be broken down fully resulting in toxic by-products that could be more mobile than the initial contamination.

Which bacteria is used in bioaugmentation?

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