Power 1200 homes per day from 5,000 cows dung?
I.m not sure how much gas a typical american home consumes, but at best if we asume each cow produces around 20Kg of dung, we have 100 tons a day, and if this had a COD(Chemical Oxygen Deman) level of say 70Kg/M3 we would have at most 3,500m3 of biogas each day. I somehow doubt whether 3 m3 of gas per day would power a village hut in Africa, never mind a US or EU home. Such claims should be subjected the basic math before being published.
I speak with some authorithy as at present we are taking the dung from a colony of 400,000 Buffalo in Pakistan, and turning that into Organic fertiliser and Biogas. No doubt California Cows have a better diet but not that good, unless they go Supersize at their local eaterie! Still whatever the performance, Good for them that they are taking this great initiative.
Robert Orr
Biting the hand that feeds IT
