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 are the types of in situ bioremediation?
Three different types of in situ bioremediation process are (i) bioattenuation/Natural Attenuation, which depends on the natural process of degradation, (ii) biostimulation where intentional stimulation of degradation of chemicals is achieved by addition of water, nutrient, electron donors or acceptors, and (iii) …
Why ex-situ bioremediation is expensive as compared to in situ bioremediation?
Ex situ bioremediation techniques tend to be more expensive due to additional costs attributed to excavation and transportation. Nonetheless, they can be used to treat wide range of pollutants in a controlled manner.
What is a benefit of using ex-situ bioremediation?
The advantages of ex-situ bioremediation include controlling variables like temperature, aeration, and nutrient level to support biological activity and preventing the contaminant from continuing to spread within the environment.
What is insitu and Exsitu 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.
How does in situ bioremediation differ from bioremediation?
In situ bioremediation relies on microorganisms and their activities to detoxify or destroy contaminants in place. In contrast to intrinsic bioremediation, engineered bioremediation provides factors for enhancing microbial growth as well as optimal conditions for microbial detoxification of contaminants.
What is in-situ and ex situ remediation?
Ex situ remediation techniques involve removing the soil from the subsurface to treat it. In situ remediation techniques involve leaving the soil in its original place and bringing the biological mechanisms to the soil.
What is in situ and ex situ conservation?
Hint:In-situ conservation means conserving all the living species, especially all the wild and endangered species, in their natural habitats and environment. Ex-situ conservation means conserving all the living species in the man-made / artful habitats that are similar to their natural living habitats.
Which Insitu Bioremediation uses microbes?
In Situ Remediation In situ bioremediation relies on microorganisms and their activities to detoxify or destroy contaminants in place. The ability of microorganisms to break down contaminants to nontoxic or less toxic forms depends on the availability to microorganisms of nutrients, electron donors, and acceptors.
Which of the following process is an example for ex situ bioremediation?
Examples of ex situ processes include land treatment and composting. In these processes, soils are excavated, mixed with amendments, and operated in a manner that facili tates degradation of the contaminants of concern. Another way to divide the bioremediation field is based on additives to environmental media.
What does in situ bioremediation include?
There are several types of bioremediation: in situ bioremediation is the in-place treatment of a contaminated site; ex situ bioremediation is the treatment of contaminated soil or water that is removed from a contaminated site; and intrinsic bioremediation is the indigenous level of contaminant biodegradation that …
What is in situ and ex situ remediation?
What’s the difference between bioremediation and ex situ?
On the other hand, bioremediation becomes in situ, when the pollutants are treated in the location where they are used to concentrate naturally. Ex situ is the term used to describe ‘off-site’. It is the exact opposite of in situ and describes things or processes away from the natural location.
What’s the difference between in situ and ex situ?
In situ and Ex situ, both are the method of conservation. The basic difference between in situ and ex situ lies on the habitat place where the process is carried out.
Which is an example of intrinsic in situ bioremediation?
But in intrinsic in situ bioremediation, natural processes are allowed to happen without altering the conditions or adding amendments. Examples of in situ bioremediation technologies include bio-venting, enhanced biodegradation, bioslurping, phytoremediation, natural attenuation, etc.
Which is an electron acceptor in in situ bioremediation?
Oxygen and electron acceptors (e.g., NO31– and SO42–) and nutrients (e.g., nitrogen and phosphorus) increase microbial growth in surface. Following are limitations of in situ bioremediation. Tedious as compared to other remedial methods.