Extremophiles for microbial-electrochemistry applications: A critical review. (May 2018)

• Record Type: Journal Article
• Authors: Shrestha, Namita; Chilkoor, Govinda; Vemuri, Bhuvan; Rathinam, Navanietha; Sani, Rajesh K.; Gadhamshetty, Venkataramana
• Is Part Of: Bioresource technology. Volume 255(2018)
• Page Start: 318
• Page End: 330
• Publication Date: 2018-05
• Subjects: Extremophiles -- Halophiles -- Thermophiles -- Bioelectrochemistry; 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.2018.01.151
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Halophiles survive hypersaline conditions in MESs. Thermophiles survive hot conditions in MESs. Extremophiles exhibit higher enzyme expression activity. Extremophiles exhibit diverse electron transfer mechanisms. Abstract: Extremophiles, notably archaea and bacteria, offer a good platform for treating industrial waste streams that were previously perceived as hostile to the model organisms in microbial electrochemical systems (MESs). Here we present a critical overview of the fundamental and applied biology aspects of halophiles and thermophiles in MESs. The current study suggests that extremophiles enable the MES operations under a seemingly harsh conditions imposed by the physical (pressure, radiation, and temperature) and geochemical extremes (oxygen levels, pH, and salinity). We highlight a need to identify the underpinning mechanisms that define the exceptional electrocatalytic performance of extremophiles in MESs.