What is meant by phytoextraction?
The use of plants to remove contaminants from the environment and concentrate them in above-ground plant tissue is known as phytoextraction.
What is the difference between Phytomining and phytoextraction?
is that phytomining is the planting (and subsequent harvesting) of vegetation that selectively concentrate specific metals from the environment into their tissues, for the primary or subsidiary purpose of commercial exploitation of the extracted metal while phytoextraction is a form of phytoremediation that exploits …
What is phytoremediation and bioremediation?
Description. Phytoremediation is a bioremediation process that uses various types of plants to remove, transfer, stabilize, and/or destroy contaminants in the soil and groundwater.
What is the difference between bioremediation and phytoremediation?
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.
What is phytoextraction and how does it work?
Phytoextraction (phytomining) plants are grown in soil that contains low grade ore. the plants absorb metal ions through their roots and concentrate these ions in their cells. the ash left behind contains metal compounds.
What is the meaning of Phytovolatilization?
Phytovolatilization. Phytovolatilization involves the uptake of contaminants by plant roots and its conversion to a gaseous state, and release into the atmosphere. This process is driven by the evapotranspiration of plants (Figure 3B).
Is Phytomining a phytoextraction?
This broad group of technologies includes phytoextraction (removal from soil), phytomining (accumulating economic metal value in plant biomass) and phytostabilization (limiting plant metals and soil metal uptake and/or bioavailability using plants and soil amendments).
What is phytoextraction GCSE?
Phytoextraction (phytomining) plants are grown in soil that contains low grade ore. the plants absorb metal ions through their roots and concentrate these ions in their cells. the plants are harvested and burnt. the ash left behind contains metal compounds.
What is the difference between Phycoremediation and Mycoremediation?
As nouns the difference between phytoremediation and mycoremediation. is that phytoremediation is (biochemistry) bioremediation by the use of plants while mycoremediation is the use of fungi to degrade or sequester contaminants in the environment.
What is the difference between Phycoremediation and mycoremediation?
What are the 3 types of bioremediation?
There are three different types of bioremediation: microbial bioremediation, phytoremediation, and mycoremediation.
Why is phytoextraction useful?
Unlike phytostabilization, by which plants only temporarily contain heavy metals, and these heavy metals still remain belowground, phytoextraction is a permanent solution for the removal of heavy metals from polluted soil. Therefore, it is more suitable for commercial application.
What is phytostabilization in agriculture?
In phytostabilization, soil contaminants are immobilized through absorption by roots, adsorption onto root surface and precipitation within the area of plant roots. As such, the plant and plant roots are employed to prevent the spread or migration of contaminants through wind and water erosion, soil dispersion and leaching.
What is phytovolatilization?
Similarly, the technique in which plants are used to remove contaminants through volatilization is called phytovolatilization ( Moreno et al ., 2005 ). In phytostabilization, inorganic contaminants such as heavy metal (loid)s in the soil are immobilized, thereby minimizing their transport in water or dust.
How does phytostabilization influence the mobility of metal contaminants?
Phytostabilization influences the contaminant’s mobility in several ways: • The amendments directly change the soil condition that influences the mobility of metal contaminants (acidic or alkaline conditions, organic matter, oxygen levels). For example, a soil’s pH have an effect on the retention and mobility of metals in soil columns.
What is the phytoextraction model?
This model for phytoextraction is based on the commercial production of a crop to market some flower or oil which either has no metal risk to consumers, or is not consumed, with metal phytoextraction a byproduct of the normal economic crop production.