Study on the Electricity Generation Characteristics of Microbial Fuel Cell with Different Substrates

Abstract

Abstract We use anhydrous sodium acetate, glucose, lactose and Colocasia antiquorum Schott as anode substrate to study the periodic curve of battery voltage and stable output voltage of different substrates, The results showed that the four kinds of microbial fuel cells with sodium acetate, glucose, lactose and pretreated Colocasia antiquorum Schott as anode substrate had the following power generation periods: 23.98 d, 20.15 d, 18.84 d and 23.52 d, respectively, and the stable voltage at the two ends of the resistance of microbial fuel cells with four different anode substrates are 0.77 V, 0.75 V, 0.65 V and 0.70 V respectively. We found at the same carbon source concentration, MFC with sodium acetate as the substrate has the best electricity production characteristics. When the pretreated Colocasia antiquorum Schott is used as anode substrate, the time for cell voltage to rise from initial value to stable value is the shortest, and as a carbon source, it can also play a dominant role in the process of electric energy collection and utilization.

Key findings

• ▸MFCs with sodium acetate as anode substrate had the longest power generation period (23.98 d) and highest stable voltage (0.77 V).
• ▸MFCs with pretreated Colocasia antiquorum Schott as anode substrate had the shortest time for cell voltage to rise to stable value.
• ▸The order of power generation periods was: sodium acetate (23.98 d) > glucose (20.15 d) > lactose (18.84 d) > Colocasia antiquorum Schott (23.52 d).

Keywords

Identifiers

DOI

10.1088/1755-1315/435/1/012036

Journal

IOP Conference Series: Earth and Environmental Science

Year

2019