Electricity Generation from Crystal Violet Using a Single-Chambered Microbial Fuel Cell Inoculated Aeromonas hydrophila YC 57

Abstract

Microbial fuel cell (MFC) provides a new opportunity for the sustainable production of energy from the textile wastewater. However, limited studies revealed the high electricity generation using a single-chambered MFC in treating crystal violet (CV) containing wastewater. This study isolated an exoelectrogen Aeromonas hydrophila YC 57, inoculated to a single-chambered MFC and intended to achieve a high power output. The results showed that the removal efficiency of CV and coulombic efficiency of MFC by A. hydrophila YC 57 were achieved at 82.5±0.7% and 57.2±0.5% at initial CV concentration of 100 mg/L, respectively. The maximum power generation of MFC was 240±5.6 mW/m². Results of cyclic voltammogram hinted the intermediate products of CV dye played roles of mediators. Toxicity studies revealed that metabolites of CV produced by A. hydrophila YC 57 were nontoxic. To our knowledge, this is the first time to demonstrate the electricity characteristics of a single-chambered MFC inoculated A. hydrophila YC 57.

Key findings

• ▸The results showed that the removal efficiency of CV and coulombic efficiency of MFC by A.
• ▸hydrophila YC 57 were achieved at 82.
• ▸7% and 57.
• ▸5% at initial CV concentration of 100 mg/L, respectively.
• ▸6 mW/m².

Keywords

Identifiers

DOI

10.4028/www.scientific.net/amr.860-863.466

Journal

Advanced Materials Research

Year

2013