Microbial fuel cell and waste liquid treatment system

Abstract

A microbial fuel cell contains a negative electrode including a sheet-like first carbon material including a graphene sheet, the negative electrode supporting microorganisms, and a positive electrode opposed to the negative electrode. The negative electrode has an arithmetical mean roughness Ra on the surface thereof set in a range of 4.0 μm to 10000 μm. A waste liquid treatment system includes the microbial fuel cell, wherein the positive electrode is arranged in contact with gas containing oxygen. The microbial fuel cell can be deformed into a shape so as to have high resistance to water pressure. The microbial fuel cell can also increase in the amount of microorganisms supported on the negative electrode due to the high arithmetical mean roughness Ra, so as to enhance output power of the microbial fuel cell.

Dependencies are inferred from the claim text.