Title: Comparative Study of Biogas Production from Anaerobic Co-digestion of Donkey Dung and Swine Dung
Abstract: Production of sufficient sustainable sources of energy, mitigation of green house gas emissions amongst others are the aspiring goals that have led in developing technologies to produce more energy from renewable sources. This study investigated the potentials of an alternative fuel sources for biogas production, it was carried out using donkey dung and swine dung as substrates, further co-digestion of both donkey dung and swine dung was done to differentiate between independent and co-digestion of substrates. Digesters were used to digest swine dung and donkey dung respectively as single substrates as well as to co-digest swine dung and donkey dung. The operating conditions here are pH value 7.2, Temperature 32°C and retention time of 68 days. Effect of seeding with bacteria increases the rate of production and mixing is an essential part that also aids the production of biogas. This work presents the design and construction of biogas digester to treat 500g of swine dung and donkey dung. The digester is capable of producing 0.007m at average working temperature of 32°C. Digester D produces higher volume of biogas. Therefore, from the values of the physic-chemical properties with the sufficient carbon obtained, it will increase the sufficient effective biogas production as an alternative source of energy.