Presently, dire need is felt to prevent spread of these pollutions to the region and also cleaning up the contaminated
regions.
For this purpose, different methods can be used. Phytoremediatin is one of these methods which take advantage of
plants and microorganisms along with them for cleaning up the contaminated environments. (Water and soil)
In fact, phytoemediation will provide suitable conditions for the growth and deployment of the plant as well as
increase of natural cleanup activities through the application of human interventions such as agricultural technology
(plowing and fertilizing). Cost-effectiveness, inexpensiveness and its simplicity is the most important advantage of
this method than any other methods. In this method, selection of suitable plant is of paramount importance which
depends on the climatic condition of the region, type and degree of soil pollution [1,14].
Future of Phytoremediation Technique in Controlling Soil Pollution
Although this science is developing very rapidly, the studies show that commercial phytoremediation should be able
to compete with the other technologies in terms of time. More phytoremediation tests have been carried out in
hydroponics environment in laboratory scale and heavy metals have been given to them, while soil environment is
completely different. In real soil, there are many metals in insoluble forms and their availability is low. The said
issue is the greatest problem. Many plants have not yet been known that should be identified and more should be
known about their physiology [6].
Although 10 years have passed from the initial application of the phytoremediation technology in the world, this
science has been developed very rapidly and today, phytoremediation has vast application on organic, inorganic and
radioactive materials. This process is sustainable, affordable and is suitable for the developing countries. Generally,
this method is cost effective as well. The studies show that efficiency of this method is increased with the
application of fast-grown plants with high biomass and high absorption power of the heavy metals. In most
contaminated places, appropriate species have been identified for the removal of pollution. Two methods of
composting and condensing can be regarded as preliminary stages for reducing production volume of these plants
but it should be considered that leachate of condensation should be collected completely. The researchers believe
that incinerating consumes the least possible time among the methods which reduce the pollutants' biomass and is
more suitable in comparison with the direct incineration in environmental terms [10].
However, it is observed that today world can devise improvements with inspiration of the nature and its virgin nondiminishable
system for what the human being has destroyed with his hand which undoubtedly is not easier than
preventing pollution of resources especially soil resources