Assessment of Microbial Fuel Cell Configurations and Power Densities

Logan, Bruce E.; Wallack, Maxwell J.; Kim, Kyoung-Yeol; He, Weihua; Feng, Yujie; Saikaly, Pascal E.

doi:10.1021/acs.estlett.5b00180

Cited by 460 publications

(233 citation statements)

References 108 publications

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“…Furthermore, water electrolysis requires >1.2 V (in theory) to produce hydrogen (Logan et al, 2015). Therefore, the applied voltage range in this study was between (low voltage = 0.4 V) and (high voltage =1.2).…”

Section: Discussionmentioning

confidence: 99%

Concurrent hydrogen production and phosphorus recovery in dual chamber microbial electrolysis cell

Almatouq

Babatunde

2017

Bioresource Technology

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Concurrent hydrogen (H 2 ) production and phosphorus (P) recovery were investigated in dual chamber microbial electrolysis cells (MECs). The aim of the study was to explore and understand the influence of applied voltage and influent COD concentration on concurrent H 2 production and P recovery in MEC. P was efficiently precipitated at the cathode chamber and the precipitated crystals were verified as struvite, using X-ray diffraction and scanning electron microscopy analysis. The maximum P precipitation efficiency achieved by the MEC was 95%, and the maximum H 2 production rate was 0.28 m 3 -H 2 /m 3 -d. Response surface methodology showed that applied voltage had a great influence on H 2 production and P recovery, while influent COD concentration had a significant effect on P recovery only. The overall energy recovery in the MEC was low and ranged from 25 ± 1 to 37 ± 1.7 %. These results confirmed MECs capability for concurrent H 2 production and P recovery.Keywords: Bio-electrochemical System; Phosphorus Recovery; Microbial Electrolysis Cell; Struvite; Response Surface Methodology IntroductionDue to population growth, the global demand for unsustainable resources is rising. As a result, concerns around resource depletion are increasing. Phosphorus is one of the most 2 important unsustainable nutrients on our planet. Phosphorus is essential for all forms of life, especially for plant growth. Unfortunately, estimates show that phosphorus rocks will be depleted within the next 50-100 years (Cooper et al., 2011). Therefore, alternative sources of phosphorus should be discovered to balance the high demand for phosphorus. Magnesium ammonium phosphate (struvite) is one of most common phosphate fertilizers that can be recovered from different streams of wastewater. Struvite is an efficient slow release fertilizer that can be used for crop growth, and is an excellent alternative for phosphate rocks (Rahman et al., 2014).Struvite precipitation occurs in the equimolecular concentration of magnesium (Mg), ammonium (NH 4 ) and (P); these elements combine with water to form struvite. The precipitation of these components is also highly dependent on pH, where struvite starts to precipitate at pH > 8 (Doyle & Parsons, 2002). The most common methods for P recovery as struvite are chemical addition and carbon dioxide stripping through aeration. These processes are effective for struvite precipitation; however, the operation cost is too high. Using chemical addition to raise the solution's pH can account for up to 97% of struvite cost (Jaffer et al., 2002;Morales et al., 2013).Microbial electrolysis cells (MECs) are a new and promising approach for hydrogen (H 2 ) production from organic matter, including wastewater and other renewable resources. In MECs, electrochemically active bacteria oxidise organic matter and generate CO 2 , electrons and protons. The bacteria transfer the electrons to the anode and the protons are released into the solution. The electrons then travel through a wire to a cathode and combine wit...

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Section: Discussionmentioning

confidence: 99%

Concurrent hydrogen production and phosphorus recovery in dual chamber microbial electrolysis cell

Almatouq

Babatunde

2017

Bioresource Technology

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“…Also, H shape or dual chamber MFC has high internal resistance [7] which may have contributed to the low OCV. More work is needed to combat the MFC internal resistance and produce better electrodes and devices that will trap the electricity for upscaling purposes [5].…”

Section: Discussionmentioning

confidence: 99%

“…MFCs utilize a wide range of substrates. Several configurations and outputs has also been reviewed [5]. In a microbial fuel cell, bacteria that degrade (oxidize) organic matter, are kept physically separated from the electron acceptor by a proton exchange membrane (PEM).…”

Section: Introductionmentioning

confidence: 99%

Abattoir Wastewater Treatment and Energy Recovery Using a Ferricyanide-Catholyte Microbial Fuel Cell

Akaluka

Orji

Braide

et al. 2016

ILNS

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“…Logan et al (2015) melaporkan bahwa jarak anoda yang terlalu dekat dengan katoda dapat menurunkan tenaga listrik yang dihasilkan, oksigen yang mengalir melalui katoda menyebabkan bakteri eksoelektrogen yang bersifat anaerobik atau anoksik pada anoda menghambat produksi arus listrik dengan adanya oksigen terlarut. Logan (2008) menyebutkan bahwa jarak 2 cm merupakan jarak yang dapat menghasilkan produksi listrik yang lebih tinggi.…”

Section: Hasil Dan Pembahasan Elektrisitas Sistem Mfc Limbah Rebusan unclassified

Electrode Distances Of Microbial Fuel Cell System On Salted Boiled Fish Processing Wastewater To Electricity And Pollution Load

2017

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Microbial fuel cell (MFC) is a technology that can produce electricity with helping exoelectrogenic bacteria. The technology can also utilize fishery processing wastewater as a media for bacteria to live, so it can reduce organic pollution load in the wastewater. Purpose of this research was to identify the effect of electrodes distance to electricity and water quality parameters of fisheries processing wastewater using MFC technology.. The MFC system used was single chamber system. The distance between electrodes used were 2 cm, 4 cm and 6 cm and the electrodes were made of stainless wire mesh coated with chitosan and active carbon. The results showed that electrodes distance affected to MFC electricity within salted boiled fish wastewater media. The average value of electric current during 48 hours observation on the distance of 2 cm, 4 cm and 6 cm were 0.17±0.06 mA, 0.46±0.17 mA and 0.44±0.16 mA, respectively. Average values of electric voltage on the distance of 2 cm, 4 cm and 6 cm were 0.12±0.03 V, 0.34±0.07 V and 0.37±0.08 V, respectively. The research also showed that MFC system can decrease average value of BOD 20.5%, COD 30.41%, and TAN 21.2 % of salted boiled fish wastewater media.

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Assessment of Microbial Fuel Cell Configurations and Power Densities

Cited by 460 publications

References 108 publications

Concurrent hydrogen production and phosphorus recovery in dual chamber microbial electrolysis cell

Concurrent hydrogen production and phosphorus recovery in dual chamber microbial electrolysis cell

Abattoir Wastewater Treatment and Energy Recovery Using a Ferricyanide-Catholyte Microbial Fuel Cell

Electrode Distances Of Microbial Fuel Cell System On Salted Boiled Fish Processing Wastewater To Electricity And Pollution Load

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