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Q4: A village has more grazing farms and cattle. So, the people have decided to convert...

Q4: A village has more grazing farms and cattle. So, the people have decided to convert the waste biomass into a useful energy. Since you are assigned with a task to design a biogas plant, the following data are provided:
Number of users: 60
Total need of biogas/person/month = 400 liters Retention period: 45 days
Specific gravity of the slurry: 1.14 gm/cm3
Ratio of biomass to water: 1: 1.25
What would be the appropriate type of biogas digester? Analyze the above data in terms of total energy that could be produced in a year, capacity and gas storage volume of digester, quantity of biogas that could be produced and how many cattle needed to provide the sufficient biomass. Provide a strong conclusion

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