Malachite green removal and bio-electricity generation using a novel-design multi-electrode microbial fuel cell

Abstract

Aim of the study: This study aims to develop the novel model of multi-electrode MFC with the termite-associated yeast G. reessii for MG decelorization and electricity generation. Material and methods: The termite-associated yeast G. reessii was inoculated into modified midia with 150 mg/L MG. The laccase activity and MG removal was studied. Then, the G. reessii was immobilized on anode surface. The electrical properties and color removal were tested. Results and conclusions: The results showed it successfully removed the MG with 98.15±0.92% within 1 day of operation. Moreover, the OCV, CD and PD of 550.00±10.00%, 3.90±0.10 A/m3 and 1.52±0.08 W/m3 were achieved. Therefore, the system could have the potential for treatment of high concentration MG contaminated wastewater and produce a bio-electric energy.

Keywords

• carcinogen
• yeast
• oxidoreductase
• laccase
• microbial fuel cell