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प्रश्न
How can the soil polluted by acid rain be made fertile again?
उत्तर
- The sulphuric acid which is a part of acid rain is released from various industries is a common pollutant of soil.
- Soil which has been polluted by sulphuric acid cannot be used for cultivation of plants.
- However, there is a way of treating this soil to make it fertile again. Microorganisms like Acidophillium spp. and Acidobacillus ferroxidens can be used in the treatment of soil polluted with sulphuric acid.
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Sulphuric acid is present in the acid rain and materials coming out of mines. You know that erosion of metals present in statues, bridges and buildings occurs due to it. Sulphuric acid is a source of energy for some species of bacteria like Acidiphilium spp. and Acidithiobacillus ferrooxidans. Hence, these bacteria can control the soil pollution occurring due to acid rain. Water soluble salts of uranium are present in the wastes produced during electroplating and in effluent released in the environment from the atomic energy plant. Geobacter convert these salts of uranium into insoluble salts and thereby prevent those salts from mixing with groundwater sources.
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