Timko, Michael T.
Biotar Research Lab, UNICAMP
This experiment examined the effect of sub-critical water hydrolysis as a pretreatment for anaerobic digestion of macauba nut shells for production of renewable methane. Renewable natural gas was made from macauba nut shells with and without pretreatment using subcritical water hydrolysis as the pretreatment. The control reactor had an average solid content of 16.9%, an accumulated volume of biogas of 17.6 liters and an average methane composition of 38%. The pretreatment reactor had an average solids content of 4.4%, an accumulated volume of 22.5 liters and an average methane composition of 67%. The accumulated energy of the pretreated reactor was 97.9 MJ/kg and the control reactor was 4.69 MJ/kg. This shows the pretreated reactor produced 20 times more energy than the control reactor.
Worcester Polytechnic Institute
Major Qualifying Project
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