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preetha siva

on 17 June 2013

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Transcript of Science-Bioremediation

Water Sustainablity and Stewardship

Bacteria Used in Bioremediation
Classifications of Technologies
Interesting Facts and Information
Bioremediation is an inexpensive solution, and it can make an easy recovery. Also, studies have shown that bioremediation reduces damage to ecosystems.
Phytoremediation is a technology related to bioremediation. Phytoremedition is technique of using plants for the removal harmful contaminants and metals from the soil and water . It is the decontamination of the polluted area with plants
Bioremediation is a method of cleaning pollution. Such as oil from a spill or contaminated groundwater. This method uses living organisms to break down and clean up contamination in land and water.
What is it?
Types of technologies
"Bio" is a prefix, meaning life. Bioremediation uses living organisms. "Phyto" is a prefix, meaning plant. Phytoremediation uses plants.
"Remediation" is a suffix. it comes from the word "remedy" which is something that is a solution/corrects.
Bacteria are the microorganisms used most often for cleaning up problems with our water systems. Bioremediation relies on the natural process of bacteria. There are many advantages to this technology, but one disadvantage is that it takes a long time to complete. Bioremediation may be employed in order to attack specific contaminants, such as chlorinated pesticides that are degraded by bacteria or a general approach.
A few microorgansims that are used in Bioremediation is pseudomonas putida and pseudomonas aeruginosa.
Bioremediation technologies can be classified as in situ or ex situ. In situ bioremediation involves treating contaminated material at site. Ex situ involves the removal of cotaminated material.
Some examples of technologies would be: bioventing landfarming, bioreactor, composting, bioaugmentation, rhizofiltration and biostimulation.
Applications of Bioremediation
- Waste water
- Industrial emission
- Drinking and process water
- Soil and land treatment
- Solid waste
Spills and leaks sink into the soil and/or water, which then gets transported by water movement. This is how contamination occurs.
Contaminants disperse. In diffusion, differences in the concentration of pollutants cause the contaminants to move to areas of high concentration, on the surface of those lower concentration in the soil
In convection, chemicals are picked up in the groundwater and transported to areas they could not reach by diffusion alone.
Interesting Facts and Information Continued...
Bioremediation can occur on its own by the fertilizers to increase the bioavailiability within the biostimulation. Microorganisms that used to perform the function of bioremediation are known as "bioremediators".
Not all contaminants are easily treated by bioremediation using microorganisms. For example, heavy metals such as lead cannot be easily absorbed by the bacteria. Phytoremediation is very useful in this situation. Natural plants are able to bioaccumulate the toxins in their above-ground parts, which are then harvested for removal.
There are a few ways we can prevent contamination. One way includes devoloping a process with reduced environmental impacts and another way is a biotechnological way which is process improvement: use of enzymes.
New Ideas
There are many new technologies that are released to help the environment. There are also new technologies that use genetically engineered microorganisms that are designed to deal with specific tasks which can be very helpful.
There is immense potential for biotechnology to contribute in the remediation and protection of the environment.
By: Preetha. S
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