Microbiological mechanism of the improved nitrogen and phosphorus removal by embedding microbial fuel cell in Anaerobic–Anoxic–Oxic wastewater treatment process

Xie, Bingyan; Liu, Bojie; Yi, Yue; Yang, Lige; Liang, Dawei; Zhu, Ying; Hong, Liu

doi:10.1016/j.biortech.2016.01.090

Cited by 56 publications

(19 citation statements)

References 32 publications

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“…Scanning electron microscopy (SEM) analyses were done to characterize the morphology of biofilm on the cathode. When the experiment was completed, the preparation of biomass samples was subjected to the methods described by Xie et al [24]. The dried precipitates were collected from the cathode using a plastic pipette tip [25].…”

Section: Analysis Methodsmentioning

confidence: 99%

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Deng

Ngo

Guo

et al. 2018

Chemical Engineering Journal

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This study developed a new microbial fuel cell (MFC) system (Sponge-MFC), which consisted of a cathodic chamber with an added sponge and two anodic chambers, for low carbon/nitrogen (C/N) wastewater treatment. When operating in the closed-circuit state, the Sponge-MFC(C) demonstrated its superior electrochemical performance compared to the closed-circuit MFC. This superiority took the form of higher coulombic efficiencies, voltage outputs, current densities and power densities. Adding a sponge could reduce the cathode's charge transfer resistance and solution resistance, and improve its capacitance, thus increasing cathodic reaction rate and power outputs. Simultaneous nitrification denitrification (SND) and bioelectrochemical denitrification processes on the cathode coupled with the sponge's SND process were responsible for efficient removal of nitrogen from the Sponge-MFC(C). Fluorescent in situ hybridization (FISH) analysis revealed that nitrifying bacteria and highly diversified denitrifying bacteria were distributed at the cathode's outer layer and inner layer, respectively. Higher phosphorus removal efficiencies (82.06 ± 1.21%) in the Sponge-MFC(C) than that in the MFC(C) (53.97 ± 2.32%) could be ascribed to biological phosphorus removal and precipitation of phosphate salts on the cathode. These results suggested the Sponge-MFC(C) could accomplish better 2 electrochemical behaviors and nutrient removal due to sponge addition when treating wastewater with low C/N ratio.

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Section: Analysis Methodsmentioning

confidence: 99%

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Deng

Ngo

Guo

et al. 2018

Chemical Engineering Journal

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“…Recently, the intergradation of AD and MFC has been studied to maximize the energy recovery [18] [21], minimize pollutants and recover inorganic nutrients in end products of waste treatments [22] [23]. AD efflux has provided Journal of Sustainable Bioenergy Systems electrochemically active microorganisms for anode reduction, and anode function is stable during the more than 300 d studies [21] [23] [24].…”

Section: Introductionmentioning

confidence: 99%

Development of a Consolidated Anaerobic Digester and Microbial Fuel Cell to Produce Biomethane and Electricity from Cellulosic Biomass Using Bovine Rumen Microorganisms

Chung¹,

Kang²,

Shin³

et al. 2019

JSBS

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Microbial fuel cells (MFCs) are bioelectrochemical systems that convert chemical energy contained in organic matter into electrical energy by using the catalytic (metabolic) activity of living microorganisms. Mediator-less two chamber H-type MFCs were constructed in the current study, using dairy digester microbial population as anode inocula to convert finely ground pine tree (Avicel) at 2% (w/v) to electricity. MFCs were placed at 37˚C and after the circuit voltage was stabilized on d9, bovine rumen microorganisms cultured anaerobically for 48 hrs in cellulose broth media were added to treatment group of MFC at 1% v/v dosage. MFC power and current across an external resistor were measured daily for 10 d. At the end of incubation on d19 head space gas and anode chamber liquid solutions were collected and analyzed for total gas volume and composition, and volatile fatty acids, respectively. Addition of enriched rumen microorganisms to anaerobic anode chamber increased cellulose digestibility and increased both CO 2 and methane production; however, it decreased the methane to CO 2 ratio. Over the experimental period, electricity generation was increased with rumen microorganism addition, and power density normalized to anode surface area was 17.6 to 67.2 mW/m 2 with average of 36.0 mW/m 2 in treatment, while control How to cite this paper:

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“…The rumen microbiota contains both strict and facultative anaerobes, which effectively hydrolyze cellulose and conserve energy via anaerobic respiration or fermentation, have been used for enhancing anodic efficiency [24] [34]. Microorganisms in anaerobic digesters have shown electrochemical activities that successfully transferred electrons to anode in MFCs [35] [36] [37] [38] [39]. Including rumen contents or anaerobic digester contents, studies have been carried out with mixed microorganism as anolyte inoculum to investigate single resource of cultures as both cellulolytic and electron transfer microorganisms.…”

Section: Introductionmentioning

confidence: 99%

The Cellulolytic Bacteria <i>R. albus</i> for Improving the Efficiency of Microbial Fuel Cell

Chung¹,

Moon²,

Chang³

et al. 2018

JSBS

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The current study has been undertaken to examine the beneficial effect in the power output of a microbial fuel cell (MFC) by adding cellulolytic bacteria Ruminococcus albus (R. albus) into the anodic chamber. Mediator-less H-type MFCs were set up where the anode chamber contained anaerobic digester microorganisms as inocula on finely ground pine tree (Avicel) at 2% (w/v) and the cathode chamber of 10mM phosphate buffered saline conductive solution, both separated by a cation exchange membrane. The functioning of the MFCs for generation of electrical power and the amounts of gaseous byproducts was monitored over a 9-day period. The addition of cellulolytic bacteria caused an increase of average power density from 7.9 m W/m 2 to19.5 m W/m 2 , about 245% increase over a 9-day period. For both groups of MFCs; with R. albus and the control, the head space gases collected were methane and CO 2 . While the methane: CO 2 ratios were found unchanged at 1.7:1 throughout the 9 days of operation, the total gas production increased from 248 mL to 319 mL due to the presence of R. albus addition. This study confirms that whereas the biocatalytic activity of anode microbial population determines the energy production, the addition of external cellulolytic bacteria into anode microbial population can improve and extend the biomass utilization.

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Microbiological mechanism of the improved nitrogen and phosphorus removal by embedding microbial fuel cell in Anaerobic–Anoxic–Oxic wastewater treatment process

Cited by 56 publications

References 32 publications

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Development of a Consolidated Anaerobic Digester and Microbial Fuel Cell to Produce Biomethane and Electricity from Cellulosic Biomass Using Bovine Rumen Microorganisms

The Cellulolytic Bacteria <i>R. albus</i> for Improving the Efficiency of Microbial Fuel Cell

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Microbiological mechanism of the improved nitrogen and phosphorus removal by embedding microbial fuel cell in Anaerobic–Anoxic–Oxic wastewater treatment process

Cited by 56 publications

References 32 publications

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Evaluation of a new sponge addition-microbial fuel cell system for removing nutrient from low C/N ratio wastewater

Development of a Consolidated Anaerobic Digester and Microbial Fuel Cell to Produce Biomethane and Electricity from Cellulosic Biomass Using Bovine Rumen Microorganisms

The Cellulolytic Bacteria &lt;i&gt;R. albus&lt;/i&gt; for Improving the Efficiency of Microbial Fuel Cell

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The Cellulolytic Bacteria <i>R. albus</i> for Improving the Efficiency of Microbial Fuel Cell