Earth Power
Ari Kaufman
Mulgrave School
Floor Location : J 123 E

The topic which I chose to explore, was investigating the effects of adding different quantities of salt to microbial fuel cells, and measuring the changes in power generation. Now, what is a microbial fuel cell? A microbial fuel cell is a small container which contains two graphite felt pieces, soil, and water. The main principle of the microbial fuel cell is generating power through the circulation of electrons (found in microbes) in between the two graphite pieces. What I was trying to do, was optimize the power generated by these microbial fuel cells. Through my research, I found that adding salts increases the power generated, because the salts contain electrolytes. These electrolytes help increase the power generated. The one exception I found to this rule is that when I started adding large quantities of salt (10g and above) the salt began to saturate in the soil, and the amount of power generated did not change, because there was such a high salt content inside the microbial fuel cell. Exploring microbial fuel cells was definitely an interesting project to experiment with.