Performance evaluation of a laboratory scale digesters of methane in biogas produced from solid waste using cow dung and chicken droppings
The question may not be clear. However, in general we can measure the digester's performance by dividing the amount of energy of the collected methane with the energy of the solid waste.
For example, if 1 kg of waste is used (batch operation), multiply the mass with HHV to determine the energy. HHV (kJ/kg) can be obtained using bomb calorimeter. This energy is your denominator. NEXT, measure the amount (mass) of methane collected throughout the reaction, and then multiply with HHV of methane in order to determine the energy in the output methane; this will be your numerator.
Nosa Ogbeide many parameters need to be looked into and yes I have done few studies on independent feedstocks u mentioned and both together in various ratios right from 1:10 to 1:80 percentages and the results surprised me a lot when I compared the same with the theoretical knowledge
Check this paper
Article Methane and Electricity Production from Poultry Litter Diges...
I agree with this..
For example, if 1 kg of waste is used (batch operation), multiply the mass with HHV to determine the energy. HHV (kJ/kg) can be obtained using bomb calorimeter. This energy is your denominator. NEXT, measure the amount (mass) of methane collected throughout the reaction, and then multiply with HHV of methane in order to determine the energy in the output methane; this will be your numerator.
Kindly check..
https://www.researchgate.net/publication/349141169_Methane_and_Electricity_Production_from_Poultry_Litter_Digestion_in_the_Amazon_Region_of_Brazil_A_Large-Scale_Study
Nosa Ogbeide i guess the above answers including mine which was answered earlier solves your question however the answers raised by Ca Dr. Gaurav Bhambri the link about the poultry litter looks best to me and yes there are many instances of poultry litter to biogas along with co digestion I have personally installed few lab scale then pilot scale then field scale small plants then medium and large scale plant.
I have personally installed one 50 tonnes per day of chicken litter to biogas project which works best with 10% of the cow manure or wood char or green waste which is rich in carbon and tried digesting chicken litter but due to mono digestion and ammonia toxification there were times when the digester used to stop producing gas in the initial stages.
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