The New Gassy World

Overview

Objectives/Goals The purpose of this experiment is to find out if the use of leftover fruits and vegetables from supermarkets used like feedstock in an anaerobic digester is a cheaper alternative to produce biogas in place of specialized energy crops at the same anaerobic conditions. Methods/Materials To conduct this experiment, I had to build a biogas system and make samples for Predigester A and Predigester B. After that,I put slurry A into C,D, and E and slurry B into F,G,and H; put the digesters into temperatures 59F (C and F),72F (D and G),and 100F (E and H) for 10 days, measuring biogas using water displacement and Syringe Protocol. Results Slurry F produced more biogas than slurry C at 59F, slurry G produced more biogas than slurry d at 72F, and slurry E produced more biogas than slurry H at 100F. The most production of biogas produced was at 100F for slurry E and slurry H, but slurry H had the most production of biogas. Conclusions/Discussion My hypothesis should be considered false because the feedstock of maize and sorghum produced more biogas than the feedstock of vegetables and fruit.

Competition history

• CSEF 2013 Environmental Engineering (Junior Division Only) · Entry J1013

Resources

• CSEF project summary ↗

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