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Iron and manganese present as pollutants in water cannot be removed by________
- a)Oxidation followed by settling and filtration
- b)Chlorination
- c)Ion exchange process
- d)Lime soda process or manganese zeolite process
Correct answer is option 'B'. Can you explain this answer?
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Iron and manganese present as pollutants in water cannot be removed by...
Water chlorination is the process of adding chlorine to water. This method is used to kill certain bacteria and other microbes in tap water as chlorine is highly toxic. In particular, chlorination is used to prevent the spread of waterborne diseases such as cholera, dysentery, typhoid etc. It cannot remove Iron and Manganese from the polluted water.
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Iron and manganese present as pollutants in water cannot be removed by...
Chlorination
Chlorination is not effective in removing iron and manganese from water because these pollutants are not easily oxidized by chlorine. The oxidation process in chlorination is not strong enough to convert iron and manganese into forms that can be easily removed through settling or filtration.
Iron and manganese in water exist in different forms such as ferrous iron (Fe2+), ferric iron (Fe3+), and manganese (Mn2+), which are not effectively removed by chlorination alone. Chlorination may even lead to the formation of insoluble iron and manganese compounds, which can further complicate the water treatment process.
Alternative methods
1. Oxidation followed by settling and filtration: This method involves the addition of oxidizing agents such as potassium permanganate or hydrogen peroxide to convert iron and manganese into insoluble forms that can be removed through settling and filtration.
2. Ion exchange process: This process involves passing water through ion exchange resins that can selectively remove iron and manganese ions from the water.
3. Lime soda process or manganese zeolite process: These processes involve the addition of lime or soda ash to raise the pH of water, which helps in the precipitation of iron and manganese compounds for removal.
In conclusion, chlorination is not an effective method for removing iron and manganese from water due to the nature of these pollutants. Alternative methods such as oxidation, ion exchange, or chemical precipitation are more suitable for effectively removing iron and manganese from water.
Chlorination is not effective in removing iron and manganese from water because these pollutants are not easily oxidized by chlorine. The oxidation process in chlorination is not strong enough to convert iron and manganese into forms that can be easily removed through settling or filtration.
Iron and manganese in water exist in different forms such as ferrous iron (Fe2+), ferric iron (Fe3+), and manganese (Mn2+), which are not effectively removed by chlorination alone. Chlorination may even lead to the formation of insoluble iron and manganese compounds, which can further complicate the water treatment process.
Alternative methods
1. Oxidation followed by settling and filtration: This method involves the addition of oxidizing agents such as potassium permanganate or hydrogen peroxide to convert iron and manganese into insoluble forms that can be removed through settling and filtration.
2. Ion exchange process: This process involves passing water through ion exchange resins that can selectively remove iron and manganese ions from the water.
3. Lime soda process or manganese zeolite process: These processes involve the addition of lime or soda ash to raise the pH of water, which helps in the precipitation of iron and manganese compounds for removal.
In conclusion, chlorination is not an effective method for removing iron and manganese from water due to the nature of these pollutants. Alternative methods such as oxidation, ion exchange, or chemical precipitation are more suitable for effectively removing iron and manganese from water.
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Iron and manganese present as pollutants in water cannot be removed by________a)Oxidation followed by settling and filtrationb)Chlorinationc)Ion exchange processd)Lime soda process or manganese zeolite processCorrect answer is option 'B'. Can you explain this answer?
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