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Transcript of Phytoremediation
Petroleum companies are already partnering up with remediation companies looking for ways to decrease their release of toxins into the environment.
It is too early to determine if Phytoremediation will be a successful solution to polluted land and water and the next few years should reveal more. Future Scope The bacterium attaches to damaged plant cells and injects a segment of DNA which is then taken up by the plant, integrated into the plant's genome and then causes the plant to start producing food for the bacterium.
This forms a tumor-like growth on the plant called crown gall disease.
Part of the bacterium's DNA which causes plant tumours is then removed and replaced it with a foreign gene of interest.
The bacterium is then allowed to infect a clump of plant tissue in a process known as transformation, and the tissue is then grown into full plants containing the new gene. Information on transgenic plants It uses naturally occurring organisms and preserves the environment in a more natural state.
Exposure of animals to hyperaccumulators (plants that absorb more toxins than others) can also be a concern to environmentalists as herbivorous animals may accumulate contaminate particles in their tissues wehn they consume them which could affect a whole food web. Economic Impact $ Phytoremediation is relatively cheaper compared to other remedial methods such as excavation. The cost of phytoremediation has been estimated as $25 - $100 per ton of soil, and $0.60 - $6.00 per 1000 gallons of polluted water with remediation of organic contaminants being cheaper than remediation of metals contaminant Impact On Mankind Pros and Cons • Phytoremediation is cost effective
• It is suited to remediation of large areas of soil
• It is environmentally friendly
• Phytoremediation sites are more aesthetically pleasing
• Phytoremediation sites are low maintenance
• It involves no noisy and expensive equipment o Not as effective for sites with high contaminant concentrations
o Phytoremediation is slower than conventional methods
o It does not work through the winter (Seasonally effective) CONS PROS Phytoextraction refers to the uptake of metals from soil by plant roots into above-ground portions of plants.
Metals such as nickel, zinc and copper are the best candidates for removal by phytoextraction Phytoextraction Nickel is removed from soil by moving up into plant roots, stem and leaves.
The plant is then harvested and disposed of and the site replanted until the nickel is reduced to acceptable levels. Phytoextraction of Nickel Phytodegradation is the breakdown of organic contaminants taken up by plants through metabolic processes within the plant, or the breakdown of contaminants surrounding the plant through the effect of enzymes produced by the plants. Phytodegradation Trinitrotoluene (TNT) is one of the world’s most persistent and dangerous explosives and is an organic contaminant.
There are many plant species that are able to break down TNT. However, this process affects the plant’s growth and development. Phytodegradation of Trinitrotoluene(TNT) Phytoremediation can reduce and/or remove contaminants from contaminated soil, water, sediments, and air, which could have been released due to Man's actions. Thank you for your attention!