Some plants extract and concentrate heavy metals from the soil. For whatpurposes can these plants be used?a) To help locate suitable sites for toxic waste storageb) Phytoremediation of polluted sitesc) To concentrate rare metals for medicinal used) To minimize soil erosion in arid lands
Question
Some plants extract and concentrate heavy metals from the soil. For whatpurposes can these plants be used?a) To help locate suitable sites for toxic waste storageb) Phytoremediation of polluted sitesc) To concentrate rare metals for medicinal used) To minimize soil erosion in arid lands
Solution 1
These plants, known as hyperaccumulators, can be used for the following purposes:
a) To help locate suitable sites for toxic waste storage: Hyperaccumulators can indicate the presence of heavy metals in the soil. If a particular area has a high concentration of these plants, it may suggest that the soil contains heavy metals, which could make it a suitable site for toxic waste storage.
b) Phytoremediation of polluted sites: Hyperaccumulators can absorb and concentrate heavy metals from the soil, effectively cleaning up polluted sites. This process, known as phytoremediation, is a cost-effective and environmentally friendly method of soil decontamination.
c) To concentrate rare metals for medicinal use: Some hyperaccumulators can absorb and concentrate rare metals that have medicinal properties. These plants can then be harvested and processed to extract the metals for use in medicine.
d) To minimize soil erosion in arid lands: While this is not directly related to their ability to absorb heavy metals, some hyperaccumulators are also hardy plants that can thrive in poor soil conditions. By planting these plants in arid lands, it can help to hold the soil together and prevent erosion.
Solution 2
These plants, known as hyperaccumulators, can be used for various purposes:
a) To help locate suitable sites for toxic waste storage: Hyperaccumulators can indicate the presence of heavy metals in the soil. If a particular area has a high concentration of these plants, it may suggest that the soil contains heavy metals, which could make it a suitable site for toxic waste storage.
b) Phytoremediation of polluted sites: This is one of the most common uses of hyperaccumulators. They can absorb and concentrate heavy metals from the soil, effectively cleaning up polluted sites. This process is known as phytoremediation.
c) To concentrate rare metals for medicinal use: Some hyperaccumulators can absorb and concentrate rare metals that are used in medicine. These plants can then be harvested and processed to extract the metals.
d) To minimize soil erosion in arid lands: While this is not directly related to their ability to absorb heavy metals, some hyperaccumulators are also good at preventing soil erosion. Their root systems can help hold the soil together, preventing it from being washed or blown away.
Similar Questions
What method uses bacteria to help extract copper from low-grade copper ores?PhytominingReduction by carbonBioleachingElectrolysis2What type of plants does phytomining depend on? Plants that can absorb copper ions from soilPlants that can detoxify copper ionsPlants that can release copper ions into soilPlants that can make copper ions during photosynthesis3What two methods can be used to extract copper from a solution of copper sulfate produced by bioleaching or phytomining?Neutralisation or reduction by carbonNeutralisation or displacementElectrolysis or displacementElectrolysis or thermal decomposition4In the electrolysis of copper, which half equation shows what happens at the negative copper electrode? 2Cu2+(aq) + 2e– → 2Cu(s)2Cu(s) → 2Cu+(aq) + 2e–Cu(s) → Cu2+(aq) + 2e– Cu2+(aq) + 2e– → Cu(s)5What is the balanced symbol equation for the displacement reaction between copper sulfate and iron?Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)Fe(s) + CuSO4(aq) → FeS(aq) + CuO4(s)FeSO4(aq) + Cu(s) → Fe(s) + CuSO4(aq)Fe(s) + CuSO4(aq) → FeO4(aq) + CuS(s)6Which of the following is not an advantage of bioleaching and phytomining over the traditional methods of extracting copper from high-grade ores?Removes toxic copper from soilMore energy efficientDoes not require miningVery fast methods
Since the Industrial Revolution, people have been pouring toxic waste into the land, ranging from petroleum products to heavy metals, and it is starting to have adverse effects on planet Earth itself as well as human and animal life. There is some level of mercury in all fish tested in the United States, and heavy metals in soil are now affecting the food supply. In Brazil, abandoned gold mines have leaked mercury into the soil. This very toxic heavy metal is absorbed by the grass and then eaten by cows, which are then processed for human consumption. Nature, however, has an amazing way of dealing with such toxins. There are certain plants that can be grown which will remove toxins from the ground in a process called "phytoremediation" that is very promising for making contaminated soil safe for humans. Scientists are working with farmers in Brazil to grow maize and canola plants around farms, which assimilate the mercury and gold that are in the soil. The plants are then burned to ash, and the heavy metals can then be extracted from the ash to pay for the phytoremediation process. Mustard greens and pumpkin vines have been used to clean up yards and factory sites. Sunflowers have been used to rid the soil of radioactive metals near nuclear plants. There are a few drawbacks, or precautions, when contemplating phytoremediation for soil treatment. The plants need to thrive in the climate of the soil, and they can only remove toxins as deep as their roots grow. So, phytoremediation will not clean up contaminated groundwater. When considering using plants to clean up soil, be mindful not to introduce an invasive species that will take over and be hard to control. Cleaning soil with plants takes time and does not happen overnight, but it is a natural, cheap, and environmentally friendly solution.4Which statement best expresses a central idea in the passage? A. Farmers in Brazil are having a hard time because of soil contamination. B. Phytoremediation is an easy way to naturally extract gold from soil. C. Petroleum products have contaminated our soil and the beef industry. D. Using plants to clean soil is a natural, sound, and inexpensive process.
Phytoremediation uses plants and related microbes to cleanse pollutants from soils and waters. Yudha Gusti Wibowo's research in a controlled environment explores phytoremediation's potential in treating mixed wastewater. Wibowo suggests that Pistia stratiotes, a floating aquatic plant, and Eichhornia crassipes, a water hyacinth, are capable of removing heavy metals like Fe (A) and Mn (B) from wastewater over time.11 Mark For ReviewWhich finding, if true, would directly support Wibowo’s claim?A) After exposing Pistia stratiotes to contaminated wastewater, X-ray fluorescence microscopy revealed an average concentration of 10ppm of Fe (A) within the plant tissues.B) After exposing Pistia stratiotes to contaminated wastewater for five weeks, Pistia stratiotes exhibited substantial growth.C) After exposing Pistia stratiotes to contaminated wastewater, the team observed no accumulation of the introduced Fe (A) and Mn (B) isotopes within the tissues of Pistia stratiotes.D) After exposing Pistia stratiotes to contaminated wastewater for five weeks, the concentration of microbes such as Pythium and Rhizoctonia has been found to exhibit a significant increase.
Students should be able to evaluate alternative biological methodsof metal extraction, given appropriate information
. Do a little internet research and provide three specific examples of medical uses of plants.
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