Comparing Biogas Yield from Anaerobic Digestion

Overview

Objectives/Goals The purpose of this project was to determin which type of food (chocolate candy or oats) would produce more biogas when anaerobically digested. Methods/Materials The manure containing the microorganisms was put into a Gatorade bottle with 400 ml of food waste. the microorganisms comsume the volatile solids and produce biogas which builds up pressure and displaced the water in the second vessel into the third vessel which is granulated to that you can measure the amount of gas. Results My results showed that the chocolate candy produced more gas than the oats. The end results were 1600 ml of gas production for the chocolate candy and 180 ml of gas production for the oats. The range was 1420 ml of gas, which clearly showed that sugar-based food are better to use tehn anaerobically digesting. Conclusions/Discussion Microorganisms comsume volatile solids and produce biogas. Volatile solid content varies between wastes and can come from sugars, fats or proteins. Sugars and fats have higher gas yield than protein or carbohydrates. This explains why the sugar-based mix produced more biogas than the carbohydrate-based mix.

Awards (1)

• Honorable Mention

Competition history

• CSEF 2012 Biochemistry/ Molecular Biology · Entry J0514

Resources

• CSEF project summary ↗

Related projects

Closest projects by meaning, across every fair and year in the corpus.

Browse more like this

• All Cellular and Molecular Biology projects
• CSEF Cellular and Molecular Biology projects
• Every CSEF 2012 project