Relationship of methane and electricity production in two-chamber microbial fuel cell using sewage sludge as substrate

Xiao, Benyi; Han, Yizhuo; Liu, Xin; Liu, Junxin

doi:10.1016/j.ijhydene.2014.08.024

Cited by 47 publications

(9 citation statements)

References 33 publications

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“…49 If MFCs were designed specically to remove the contaminants in the medium and produce electricity, methane production could enhance the electrical output.…”

Section: 47mentioning

confidence: 99%

Interaction of bacteria and archaea in a microbial fuel cell with ITO anode

et al. 2018

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A microbial fuel cell with an indium tin oxide (ITO) coated glass anode was used to study the mechanism of electricity generation and electron transfer of electrochemically active microbes (EAMs). A simple method of ITO anode pretreatment (pickling) was developed to improve the performance of the microbial fuel cell.After proper treatment, ITO-glass anodes maintained their conductivity with a slight increase in resistance.Using this pickling pretreatment, the ITO-glass microbial fuel cell with an anode area of only 8.3 cm 2 , was successfully initiated and obtained a stable voltage and power output of 418.8 mW m À2 . The electrode material with pretreatment showed optimal performance for the in situ study of EAMs. DNA was extracted from various parts of the reactor and the microbial communities were analyzed. The results indicated that the large proportion of methane-related microbes on the cathode of the MFC was one of the reasons for its high COD removal and low columbic efficiency. ITO glass is suitable as an anode material for the in situ study of EAMs, and shows potential for practical application.Microbial fuel cells (MFCs) are one type of "green energy generating" device that is able to convert the chemical energy of organic matter into electrical energy.1 The process of conversion from chemical energy to electrical energy takes place during wastewater treatment using MFCs. This type of device utilizes microorganisms as the biocatalyst and has attracted a great deal of attention from researchers around the world. 1-4Studies of MFCs have been mainly focused in a few specic areas: increasing the efficiency of converting organic matter into electrical energy, reducing the cost of assembling the reactors, and the mechanism of MFCs that converts chemical energy into electrical energy. 2,4-6In the rst step of energy conversion, microorganisms at the MFC anode consume organic matter from their growth medium and release electrons.7 To study this critical step involving the anode, the microorganisms located their, and their mechanism of electron deposition, it is necessary to choose proper anodic materials. 8At present, more and more choices have got to fabricate or modify the electrode of MFCs, with nanomaterials, nanocomposites, graphene sheet and graphene oxides owing to their high surface area, porosity and prompt electron conduction properties.9-13 The results showed that the electrodes fabricated or modied by nonamaterials exhibited excellent electrochemical activity. Signicant redox peaks have found in cyclic voltammograms and electricity production of the MFCs also obtained.To harvest the largest columbic efficiencies and chemical oxygen demand (COD) removal efficiencies, most MFC anodes are carbon-felt brushes with a large surface area.

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“…49 If MFCs were designed specically to remove the contaminants in the medium and produce electricity, methane production could enhance the electrical output.…”

Section: 47mentioning

confidence: 99%

Interaction of bacteria and archaea in a microbial fuel cell with ITO anode

et al. 2018

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“…The improper treatment and disposal of sludge will lead to some environmental issues, such as greenhouse gas emissions and secondary pollution (Li et al, 2015). Although sludge can be used to produce energy materials such as methane (Xiao et al, 2014), hydrogen (Sun et al, 2014), and electricity (Xiao et al, 2014), its treatment and disposal costs are still high (Guo et al, 2013). Because of its mass-yield, sludge treatment and disposal has become an important issue for many wastewater treatment plants, and reducing sludge production in the wastewater treatment is very significant (Guo et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Electricity production and sludge reduction by integrating microbial fuel cells in anoxic-oxic process

et al. 2017

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To produce energy and reduce sludge production from the treatment of municipal wastewater, four identical microbial fuel cells (MFCs) were constructed in an anoxic-oxic (A/O) process (MFCs-A/O system). Experimental results indicated that this system enhance the removals of chemical oxygen demand (COD) and total nitrogen (TN). The electricity produced by each MFC were ranged from 0.371 to 0.477V (voltage) and from 138 to 227mW/m (power density) at the stable stage, when the external resistance was fixed at 1000Ω. The coulombic efficiency of the MFCs-A/O system ranged from 0.31% to 1.68% (mean=0.72%) at the stable stage, respectively. The removals of COD and TN in the MFCs-A/O system were slightly higher than those in the control system. Compared with the control system, the MFCs-A/O system can reduce waste activated sludge production and sludge yield by 24.0% and 24.2%, respectively. The experimental results indicated that the MFC constructed in A/O system improves wastewater treatment and the MFCs-A/O system can produce electricity while reducing sludge production and increasing wastewater treatment efficiency.

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“…Currently, several fuels such as hydrogen [44], methane [45], methanol [46] and ethanol [47] have been proven to be taken as fuel in FCEVs, but hydrogen is still primary fuel in FECVs for China like many other countries [48]. Different to the others, hydrogen gas (H 2 ) can be produced from non-fossil reserves such as water and biomass, so H 2 -FCEVs could cut off the dependence of vehicle power on fossil-fuels.…”

Section: Reliability and Flexibility Of Fcevs For Chinamentioning

confidence: 99%

On reliability and flexibility of sustainable energy application route for vehicles in China

Sun

2015

Renewable and Sustainable Energy Reviews

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Relationship of methane and electricity production in two-chamber microbial fuel cell using sewage sludge as substrate

Cited by 47 publications

References 33 publications

Interaction of bacteria and archaea in a microbial fuel cell with ITO anode

Interaction of bacteria and archaea in a microbial fuel cell with ITO anode

Electricity production and sludge reduction by integrating microbial fuel cells in anoxic-oxic process

On reliability and flexibility of sustainable energy application route for vehicles in China

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