Inhibition of microbial fuel cell operation for municipal wastewater treatment by impact loads of free ammonia in bench- and 45 L-scale

Hiegemann, Heinz; Lübken, Manfred; Schulte, Patrick; Schmelz, Karl-Georg; Gredigk-Hoffmann, Sylvia; Wichern, Marc

doi:10.1016/j.scitotenv.2017.12.072

Cited by 37 publications

(7 citation statements)

References 32 publications

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“…presented in the biofilter devices (Wang et al, 2016); and (3) spacing between anode and cathode electrodes (25 cm) may be too large, as has been described by Oon et al (2017), who observed that the voltage output in up-flow constructed wetland-MFC tends to decrease when the spacing between anode and cathode electrodes are increased from 15 to 30 cm. Hiegemann et al (2017) have also reported that the voltage output increases with the increase of organic concentration, as the voltage output is dependent on the electrons and protons transferred from carbon sources at the anode. However, excessive organic loading is not conducive to electricity generation because the multiplication of methanogens can inhibit the power generation (Martin et al, 2010), or organics may not be completely oxidized at the anode, thereby generating an anaerobic environment that causes the CW-MFC to have decreased power output or even stop working (Villaseñor et al, 2013).…”

Section: Electricity Generationmentioning

confidence: 95%

Response Characteristics of Nitrifying Bacteria and Archaea Community Involved in Nitrogen Removal and Bioelectricity Generation in Integrated Tidal Flow Constructed Wetland-Microbial Fuel Cell

et al. 2020

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This study explores nitrogen removal performance, bioelectricity generation, and the response of microbial community in two novel tidal flow constructed wetlandmicrobial fuel cells (TFCW-MFCs) when treating synthetic wastewater under two different chemical oxygen demand/total nitrogen (COD/TN, or simplified as C/N) ratios (10:1 and 5:1). The results showed that they achieved high and stable COD, NH 4 +-N, and TN removal efficiencies. Besides, TN removal rate of TFCW-MFC was increased by 5-10% compared with that of traditional CW-MFC. Molecular biological analysis revealed that during the stabilization period, a low C/N ratio remarkably promoted diversities of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in the cathode layer, whereas a high one enhanced the richness of nitrite-oxidizing bacteria (NOB) in each medium; the dominant genera in AOA, AOB, and NOB were Candidatus Nitrosotenuis, Nitrosomonas, and Nitrobacter. Moreover, a high C/N ratio facilitated the growth of Nitrosomonas, while it inhibited the growth of Candidatus Nitrosotenuis. The distribution of microbial community structures in NOB was separated by space rather than time or C/N ratio, except for Nitrobacter. This is caused by the differences of pH, dissolved oxygen (DO), and nitrogen concentration. The response of microbial community characteristics to nitrogen transformations and bioelectricity generation demonstrated that TN concentration is significantly negatively correlated with AOA-shannon, AOA-chao, 16S rRNA V4−V5-shannon, and 16S rRNA V4−V5-chao, particularly due to the crucial functions of Nitrosopumilus, Planctomyces, and Aquicella. Additionally, voltage output was primarily influenced by microorganisms in the genera of

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Section: Electricity Generationmentioning

confidence: 95%

Response Characteristics of Nitrifying Bacteria and Archaea Community Involved in Nitrogen Removal and Bioelectricity Generation in Integrated Tidal Flow Constructed Wetland-Microbial Fuel Cell

et al. 2020

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“…Large varieties of parameters including configuration, materials, dimension, electrodes, microbial community, temperature, pH, substrate flow and cost-effectiveness critically govern the performance of a microbial electrochemical system. Pilot design and operation are thus a time-consuming and risky work: any single issue could lead to process failure [34, 35]. That may explain the lack of publication in this domain.…”

Section: Introductionmentioning

confidence: 99%

Upscaling of Microbial Electrolysis Cell Integrating Microbial Electrosynthesis: Insights, Challenges and Perspectives

Tian¹,

Lacroix²,

Quéméner³

et al. 2019

Preprint

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Recent development of microbial electrochemical technologies has allowed microbial electrosynthesis (MES) of organic molecules with microbial electrolysis cell treating waste organic matter. An electrolytic cell with a MES cathode (ME-ME cell) can produce soluble organic molecules with higher market price than biomethane, and thus satisfy both economic and environmental interest. However, the sustainability of bioanode activity could become a major concern. In this work, a 15-liter ME-ME reactor was designed with specific electrode configurations. An electrochemical model was established to assess the feasibility and possible performance of the design, considering the “aging” effect of the bioanode. The reactor was then built and operated for performance evaluation as well as bioanode regeneration assay. Biowaste from an industrial deconditioning platform was used as substrate for bioanode. The COD removal rate in the anodic chamber reached 0.83 g day-1 L-1 of anolyte and the anodic coulombic efficiency reached 98.6%. Acetate was produced with a rate of 0.53 g day-1 L-1 of catholyte, reaching a maximum concentration of 8.3 g L-1. A potential difference was applied between the bioanode and biocathode independent of reference electrodes. The active biocathode was dominated by members of the Genus Pseudomonas, rarely reported so far for MES activity.

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“…After switching from 1000 to 15 Ω external resistance, there was a lag period of approximately 35 days before power began to increase (Figure S1). Current production in an MFC can vary by biofilm development, growth or sloughing, (Babauta et al, 2014; Beecroft et al, 2012; Sun et al, 2017), or changes in pH (Jadhav & Ghangrekar, 2009) temperature (Ahn & Logan, 2010), chemical oxygen demand (Di Lorenzo et al, 2009), ionic strength (H. Liu et al, 2005), hydraulic retention time (Walter et al, 2016), or ammonia concentrations (Hiegemann et al, 2018). In this system, all of these parameters are in constant flux and affected by variations in constituent wastewater characteristics and variations in flow rate into the reactor, resulting in variations in power production with time (Figure S1).…”

Section: Resultsmentioning

confidence: 99%

Biofilm structure, dynamics, and ecology of an upscaled biocathode wastewater microbial fuel cell

Leininger

Yates

Ramirez

et al. 2020

Biotech & Bioengineering

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A microbial fuel cell (MFC) system containing modular half‐submerged biocathode was operated for 6 months in an 800 L flow‐through system with domestic wastewater. For the first time, spatial and temporal differences in biofilm communities were examined on large three‐dimensional electrodes in a wastewater MFC. Biocathode microbial community analysis showed a specialized biofilm community with electrogenic and electrotrophic taxa forming during operation, suggesting potentially opposing electrode reactions. The anodic community structure shifted during operation, but no spatial differences were observed along the length of the electrode. Power output from the system was most strongly influenced by pH. Higher power densities were associated with the use of solids‐dewatering filtrate with increased organic matter, conductivity, and pH. The results show that the biocathode was the rate‐limiting step and that future MFC design should consider the effect of size, shape, and orientation of biocathodes on their community assembly and electrotrophic ability.

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Inhibition of microbial fuel cell operation for municipal wastewater treatment by impact loads of free ammonia in bench- and 45 L-scale

Cited by 37 publications

References 32 publications

Response Characteristics of Nitrifying Bacteria and Archaea Community Involved in Nitrogen Removal and Bioelectricity Generation in Integrated Tidal Flow Constructed Wetland-Microbial Fuel Cell

Response Characteristics of Nitrifying Bacteria and Archaea Community Involved in Nitrogen Removal and Bioelectricity Generation in Integrated Tidal Flow Constructed Wetland-Microbial Fuel Cell

Upscaling of Microbial Electrolysis Cell Integrating Microbial Electrosynthesis: Insights, Challenges and Perspectives

Biofilm structure, dynamics, and ecology of an upscaled biocathode wastewater microbial fuel cell

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