Question

Give reason. cow dung is used for production of biogas​

Answer 1

Answer:

Cow dung yield the highest biogas with methane content of 67.9%. Cow pea yielded 56.2% methane content. The lowest methane content was produced by cassava peelings with 51.4%. A cumulative of 124.3 litres of biogas was produced at the end of the 30 days retention period from the cow dung waste.

Answer 2

Answer:

(i) Cow-dung contains important nutrients like nitrogen and phosphorus, which are very useful for crops.

(ii) The fuel or biogas obtained by the use of cow-dung in biogas plants does not produce any smoke on burning and does not cause air-pollution.

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