Bioelectricity Production from Different Types of Bacteria Using MFC Under Optimizing Factors and New Bacterial Strain Bioelectricity Production Isolated from Milk Sample in Egypt

Abstract

Background. Microbial fuel cell is a way for clean and pure energy by exploiting the metabolism of bacteria in special conditions to produce electricity and using it in many other applications. Though the MFCs aren’t a broad used until now but many research are working on optimization of their production of energy. Our objective to investigate the electricity production using improved MFC with new Egyptian strain is collected from Cairo cow milk. Results.Streptococcus thermophilus optimized by raising the temperature38°C to give 192.2 mV than the two other bacteria were measured (E. coli is 71.8 mV and Lactobacillus acidophilus is 187.9 mV),On the other hand measurements under acidic pH elevated the bioelectricity in the case of Lactobacillus acidophilus to give 167.4 mV.while the identified bacterial sample from milk (Lactococcus lactis subs hordinea) produced highest bioelectricity score at normal conditions (418 mV). Conclusion. MFC can be optimized in structure using large volume and conductive materials. The lactic acid bacteria have a potential to produce bioelectricity in large scale and can be optimized by different factors (Temp., pH, and Concentration of bacterial cells).