1 In situ Bioremediation. In situ bioremediation is the application of a biological treatment to clean up hazardous compounds present in the environment. The optimization and control of microbial transformations of organic contaminants requires the integration of many scientific and engineering disciplines.
What are the 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.
Which is better ex situ or in situ bioremediation?
Two major groups bioremediation treatment techniques are used: in situ and ex situ remediation. While in situ remediation is more cost effective, the thoroughness of this method is less effective than the ex situ remediation. Ex situ remediation is less cost effective, but is a more thorough remediation method.
What is ex 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 in situ bioremediation example?
Some of the in situ bioremediation practices have been discussed below. 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 are the types of bioremediation?
There are three different types of bioremediation: microbial bioremediation, phytoremediation, and mycoremediation.15 Sept 2018
What are the three 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 insitu and Exsitu techniques in 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. Bioremediation processes are cost effective, safe and nature-based methods over the chemical and physical methods.3 Mar 2017
What is bioremediation give two examples?
Biological treatment, bioremediation, is a similar approach used to treat wastes including wastewater, industrial waste and solid waste. Some examples of bioremediation related technologies are phytoremediation, bioventing, bioattenuation, biosparging, composting (biopiles and windrows), and landfarming.
What are 2 positives for bioremediation?
There are several advantages of using bioremediation processes compared with other remediation technologies: (1) biologically-based remediation detoxifies hazardous substances instead of merely transferring contaminants from one environmental medium to another; (2) bioremediation is generally less disruptive to the
What are disadvantages of in situ bioremediation?
Limitations of In Situ Bioremediation • Some contaminants may not be completely transformed to innocuous products. The intermediate produce may be more toxic and/or mobile than the parent compound. Some contaminants cannot be biodegraded (i.e., they are recalcitrant).
Which is an advantages of ex situ bioremediation of soil?
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.