Treatment of seafood processing wastewater using upflow microbial fuel cell for power generation and identification of bacterial community in anodic biofilm. (15th September 2016)

• Record Type: Journal Article
• Authors: Jayashree, C.; Tamilarasan, K.; Rajkumar, M.; Arulazhagan, P.; Yogalakshmi, K.N.; Srikanth, M.; Banu, J. Rajesh
• Is Part Of: Journal of environmental management. Volume 180(2016)
• Page Start: 351
• Page End: 358
• Publication Date: 2016-09-15
• Subjects: Microbial fuel cell (MFC) -- Sea food processing wastewater -- Power density -- Coulombic efficiency -- Stenotrophomonas sp.; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2016.05.050
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: Tubular upflow microbial fuel cell (MFC) utilizing sea food processing wastewater was evaluated for wastewater treatment efficiency and power generation. At an organic loading rate (OLR) of 0.6 g d −1, the MFC accomplished total and soluble chemical oxygen demand (COD) removal of 83 and 95%, respectively. A maximum power density of 105 mW m −2 (2.21 W m −3 ) was achieved at an OLR of 2.57 g d −1 . The predominant bacterial communities of anode biofilm were identified as RB1A (LC035455), RB1B (LC035456), RB1C (LC035457) and RB1E (LC035458). All the four strains belonged to genera Stenotrophomonas . The results of the study reaffirms that the seafood processing wastewater can be treated in an upflow MFC for simultaneous power generation and wastewater treatment. Highlights: MFC showed 83% TCOD removal coupled with high power generation. MFC recorded maximum coulombic efficiency of 26.73%. Highest power density of 222 mW m −2 was obtained with phosphate buffer. Cyclic voltammetry confirmed the presence of electrochemically active microorganism. Predominant bacterial strains in anode biofilm belonged to Stenotrophomonas sp.