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Question : The use of dung as raw material for biogas production is profitable than using it only as fertiliser or fuel. |
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Answer» Solution :Animal dung is used as raw material for production of biogas. It provides a safe and EFFICIENT method of waste disposal. `rarr` Besides it, by SUPPLYING biogas as a fuel gas, COOKING, LIGHTING, etc. we can save natural gas. `rarr` The residual slurry can be used as excellent manure that is rich in nitrogen and phosphorous. This natural FERTILISER maintains soil fertility and agriculture practice becomes more economical. |
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