Phytoremediation of inorganic pollutants

-

Contaminated soil treatment
          Inorganic pollutants detoxification is carried out by the following procedures mention below; 
§Phyto-remediation (plants used)
§Bio-remediation(microbes used)
Sources of heavy metals in environment
          There are different sources of heavy metals like atmospheric deposition, mining activities and the role of different industries.
Sources of heavy metals in environment
Inorganic Pollutants
Following are the different inorganic pollutants mentioned below;
  1.     Arsenic
  2.          Chromium
  3.          Uranium
  4.          Mercury
  5.          Selenium
  6.          Cadmium
  7.          Copper
  8.          Lead 
Phytoremediation
Use of green plants for removal of inorganic pollutants from contaminated site.
Accumulation of pollutants in plant tissues by roots.
Accumulation of pollutants in plant tissues by roots.
Advantages
  1.          The cost of phyto-remediation is lower.
  2.          Recovery and reuse of valueable metals.
  3.          Minimal land disturbance.
  4.          Reduce transport of contaminants by wind and reduce soil erosion.
  5.          Multiple contaminants can be remove within the same plants.
Phyto-remediation Mechanism




Phyto-extraction
It is removal of inorganic pollutants from soil solution and their storage in plant (non-toxic form).
• Fern stores Arsenic
• Sunflower remove uranium
Phytoextraction

Phytostabilization

Refers to immobilization of  inorganic pollutants in soil by roots through
•Absorption 
•Precipitation
•Not added to food chain (because it prevent downward movement)

Phytotransformation

        Pollutants is taken up by the plants and transformed in plant tissues (To be effective must be transformed to a less toxic form). 
It  is the ability of plants to change the molecular
composition of certain inorganic pollutants.
1.Metabolic processes within plants.
2.Effects of compounds such as enzymes.

Phytostimulation

•Microbes in rhizosphere transform inorganic pollutants to non toxic products.
Phytovolatilization
Plants remove contaminants in volatile forms and transpiring them into atmosphere.
§Work on  heavy metal (mercury)



Conclusion

§The main factor driving the implementation of phytoremediation project are
1. Stabilization
2. remediation of many contaminated sites.











Comments

Post a Comment

Popular posts from this blog

Tomato Farming in Pakistan: From Garden to Kitchen

-
Image
Introduction http://agriera.blogspot.com/2023/10/potential-of-potato-farming-in-pakistan.html http://agriera.blogspot.com/2023/10/detail-about-major-cash-crops-in.html Kitchen gardening, often referred to as home gardening, is a rewarding practice that allows individuals to grow their own fresh produce right at home. In Pakistan, tomato farming is a popular choice for kitchen gardening due to the versatility of tomatoes in Pakistani cuisine. This article delves into the process of cultivating tomatoes in a home garden in Pakistan. Selecting The Right varieties Choose tomato varieties that are well-suited to your local climate and garden space. Some popular tomato varieties for home gardening in Pakistan include Roma, Cherry, and Early Girl. Site Selection Tomatoes require plenty of sunlight, so select a location in your garden that receives at least 6-8 hours of direct sunlight each day. Ensure proper drainage to prevent waterlogging, which can harm tomato plants. Soil Preparation Prep...
Read more

Detail about Major Cash Crops in Pakistan

-
Image
https://agriera.blogspot.com/2023/10/canola.html https://agriera.blogspot.com/2023/09/cotton-gossypium-spp-production.html https://agriera.blogspot.com/2023/09/production-technology-of-rice-part-1.html Pakistan is an agriculturally rich country with a diverse range of crops grown throughout the year. Major cash crops in Pakistan play a significant role in the country's economy. These crops are grown primarily for sale in local and international markets, generating substantial revenue. Here are some of the major cash crops in Pakistan: 1.Cotton Cotton is one of the most important cash crops in Pakistan and a significant contributor to the textile industry. Pakistan is among the world's largest cotton-producing countries. Cotton is mainly cultivated in the provinces of Sindh and Punjab. Cotton production in Pakistan has historically been a crucial component of the country's agricultural sector and economy. Pakistan is one of the world's leading cotton-producing nations, w...
Read more

Kitchen garden

-
Image
K itch en garden A   garden or area   in   which   vegetables,   fruits,   and   herbs   are   grown for domestic use or   household   consumption. Such separate place or area is called Kitchen Garden.             Kitchen Gardening For successful cultivation of vegetables at domestic level. kitchen gardening is a source of herbs, vegetables and fruits         Principles Following are the principles of Kitchen gardening;    1.Provision of sunlight    2.Selection of suitable site    3.Soil type    4.Easy irrigation approach    5.Suitable environment (temp, air etc.)    6.Easy approach to kitchen garden                                Planning For good production, following measurements are required Required...
Read more