title: Synergistic effect of up-flow constructed wetland and microbial fuel cell for simultaneous wastewater treatment and energy recovery.
abstract: This study demonstrated a successful operation of up-flow constructed wetland-microbial fuel cell (UFCW-MFC) in wastewater treatment and energy recovery. The goals of this study were to investigate the effect of circuit connection, organic loading rates, and electrode spacing on the performance of wastewater treatment and bioelectricity generation. The average influent of COD, NO3(-) and NH4(+) were 624 mg/L, 142 mg/L, 40 mg/L, respectively and their removal efficiencies (1 day HRT) were 99%, 46%, and 96%, respectively. NO3(-) removal was relatively higher in the closed circuit system due to lower dissolved oxygen in the system. Despite larger electrode spacing, the voltage outputs from Anode 2 (A2) (30 cm) and Anode 3 (A3) (45 cm) were higher than from Anode 1 (A1) (15 cm) as a result of insufficient fuel supply to A1. The maximum power density and Coulombic efficiency were obtained at A2, which were 93 mW/m(3) and 1.42%, respectively.
authors.affiliation: School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
authors.forename: Yoong-Ling
authors.initials: YL
authors.lastname: Oon
authors.affiliation: School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia. Electronic address: ongsoonan@yahoo.com.
authors.forename: Soon-An
authors.initials: SA
authors.lastname: Ong
authors.affiliation: School of Materials Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
authors.forename: Li-Ngee
authors.initials: LN
authors.lastname: Ho
authors.affiliation: School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
authors.forename: Yee-Shian
authors.initials: YS
authors.lastname: Wong
authors.affiliation: School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
authors.forename: Farrah Aini
authors.initials: FA
authors.lastname: Dahalan
authors.affiliation: School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
authors.forename: Yoong-Sin
authors.initials: YS
authors.lastname: Oon
authors.affiliation: School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
authors.forename: Harvinder Kaur
authors.initials: HK
authors.lastname: Lehl
authors.affiliation: School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
authors.forename: Wei-Eng
authors.initials: WE
authors.lastname: Thung
mesh_terms: D001673:Biodegradation, Environmental; D001674:Bioelectric Energy Sources / Q000600:supply & distribution; D003246:Conservation of Energy Resources / Q000379:methods*; D004560:Electricity; D004566:Electrodes; D005374:Filtration; D010084:Oxidation-Reduction; D010100:Oxygen / Q000032:analysis / Q000378:metabolism; D032401:Typhaceae / Q000502:physiology; D064091:Waste Disposal Facilities; D062065:Wastewater / Q000737:chemistry; D018508:Water Purification / Q000379:methods*; D053833:Wetlands
chemical_list: D010100:Oxygen; D062065:Wastewater
keywords: Activated carbon as electrodes; Bioelectricity; Membrane-less; Microbial fuel cell; Up-flow constructed wetland