What Are The Advantages Of Phytoextraction?

Why do we need to extract metals?

Iron and aluminium are extracted from their ores in different ways because the metals have different reactivities.

Metals are used for different purposes, depending on their properties..

What are the stages of Phytomining?

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 meant by Phytoextraction?

Phytoextraction is a subprocess of phytoremediation in which plants remove dangerous elements or compounds from soil or water, most usually heavy metals, metals that have a high density and may be toxic to organisms even at relatively low concentrations.

Which is better Phytomining and bioleaching?

Phytomining involves growing plants on top of low grade ores. The plants absorb copper ions through their roots The plants are then burnt to ashes containing copper ions. … Bioleaching involves bacteria which feed on the low grade ore and absorb the copper ions. They them leach these ions into a solution.

What are the disadvantages of bioleaching?

Toxic chemicals are sometimes produced in the process. Sulfuric acid and H+ ions that have been formed can leak into the ground and surface water turning it acidic, causing environmental damage. Heavy ions such as iron, zinc, and arsenic leak during acid mine drainage.

What is a disadvantage of Phytomining?

“environmental: Toxic chemicals are sometimes produced in the process. Sulfuric acid and H+ ions that have been formed can leak into the ground and surface water turning it acidic, causing environmental damage. Heavy ions such as iron, zinc, and arsenic leak during acid mine drainage.

What are the disadvantages of smelting?

Health Effects Exposure to airborne pollutants from metal processing and smelting can lead to various acute and chronic diseases. Initial sudden exposure can lead to an irritation of the eyes, nose and throat. More serious and chronic effects are heart and lung problems, and even premature death.

Why do we use bioleaching?

Bioleaching. Certain bacteria can break down ores to produce an acidic solution containing copper(II) ions. The solution is called a leachate and the process is called bioleaching . Bioleaching does not need high temperatures, but it produces toxic substances, including sulfuric acid, which damage the environment.

Where is Phytomining used?

Gold revenue at each location is helping promote management of mercury (Indonesia) and arsenic (China) in mine waste, while in Mexico, phytomining is being used as a mechanism to create employment in poor areas.

What are the advantages of Phytomining?

What an EARTH is Phytomining? Simply put, PHYTOMINING is a form of EXTRACTION….ADVANTAGESDISADVANTAGESThe process is more environmentally friendly than traditional extraction methods.Less profit is made from bioleaching which means it is less appealing to buisness men and women.2 more rows

What is meant by Phytoextraction what is an added benefit of this process?

Phytoextraction is the use of plant to take up metal contaminants from soil through the absorption by plant roots. … After the harvest, the soil will contain a lower concentration of contaminant. As such, this growth and harvest cycle is usually repeated for a number of times to achieve a considerable clean up.

How Phytoextraction process is useful for extracting metals?

The aim of phytoextraction is reducing the concentration of metals in contaminated soils to regulatory levels within a reasonable time frame. This extraction process depends on the ability of selected plants to grow and accumulate metals under the specific climatic and soil conditions of the site being remediated.