Yeast and carbon nanotube based biocatalyst developed by synergetic effects of covalent bonding and hydrophobic interaction for performance enhancement of membraneless microbial fuel cell. (February 2017)

• Record Type: Journal Article
• Authors: Christwardana, Marcelinus; Kwon, Yongchai
• Is Part Of: Bioresource technology. Volume 225(2017)
• Page Start: 175
• Page End: 182
• Publication Date: 2017-02
• Subjects: Microbial fuel cell -- Membraneless -- Yeast cell -- Nicotinamide adenine dinucleotide -- Carbon nanotube; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2016.11.051
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: We develop a new type of membraneless microbial fuel cell (MFC). Yeast cells are cultivated from Saccharomyces cerevisiae. Yeast cells immobilized on carbon nanotube are developed as anodic catalyst. Superior catalytic activity and MFC performance are gained by yeast/CNT catalyst. MFC adopting yeast/CNT maintains its MPD even after eight days. Abstract: Membraneless microbial fuel cell (MFC) employing new microbial catalyst formed as yeast cultivated from Saccharomyces cerevisiae and carbon nanotube (yeast/CNT) is suggested. To analyze its catalytic activity and performance and stability of MFC, several characterizations are performed. According to the characterizations, the catalyst shows excellent catalytic activities by facile transfer of electrons via reactions of NAD, FAD, cytochrome c and cytochrome a 3, while it induces high maximum power density (MPD) (344 mW·m −2 ). It implies that adoption of yeast induces increases in catalytic activity and MFC performance. Furthermore, MPD is maintained to 86% of initial value even after eight days, showing excellent MFC stability.