MXene@Poly(diallyldimethylammonium chloride) decorated carbon cloth for high electrochemical active biofilm in microbial fuel cell

2021 ◽  
Author(s):  
Chengcheng Xing ◽  
Demin Jiang ◽  
Le Tong ◽  
Kexin Ma ◽  
Yan Xu ◽  
...  
Author(s):  
Rajkumar Rajendran ◽  
Gnana Prakash Dhakshina Moorthy ◽  
Haribabu Krishnan ◽  
Sumisha Anappara

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3976
Author(s):  
Barbara Włodarczyk ◽  
Paweł P. Włodarczyk

Research related to measurements of electricity production was combined with parallel wastewater parameter reduction in a membrane-less microbial fuel cell (ML-MFC) fed with industry process wastewater (from a yeast factory). Electrodes with Ni–Co and Cu–B catalysts were used as cathodes. A carbon electrode (carbon cloth) was used as a reference due to its widespread use. It was demonstrated that all analyzed electrodes could be employed as cathodes in ML-MFC fed with process wastewater from yeast production. Electricity measurements during ML-MFC operations indicated that power (6.19 mW) and current density (0.38 mA·cm−2) were the highest for Ni–Co electrodes. In addition, during the exploitation of ML-MFC, it was recorded that the chemical oxygen demand (COD) removal per time for all types of electrodes was similar to the duration of COD decrease in the conditions for wastewater aeration. However, the COD reduction curve for aeration took the most favorable course. The concentration of NH4+ in ML-MFC remained virtually constant throughout the measurement period, whereas NO3− levels indicated almost complete removal (with a minimum increase in the last days of cell exploitation).


RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 68827-68834 ◽  
Author(s):  
Praveena Gangadharan ◽  
Indumathi M. Nambi ◽  
Jaganathan Senthilnathan ◽  
Pavithra V. M.

In the present study, a low molecular heterocyclic aminopyrazine (Apy)–reduced graphene oxide (r-GO) hybrid coated carbon cloth (r-GO–Apy–CC) was employed as an active and stable bio-electro catalyst in a microbial fuel cell (MFC).


2009 ◽  
Vol 60 (11) ◽  
pp. 2879-2887 ◽  
Author(s):  
Mirella Di Lorenzo ◽  
Tom P. Curtis ◽  
Ian M. Head ◽  
Sharon B. Velasquez-Orta ◽  
Keith Scott

This study reports an investigation of the effect of the anode surface area on the performance of a single chamber microbial fuel cell (SCMFC) based biosensor for measuring the organic content of wastewater. A packed bed of graphite granules was used as the anode. The surface area of the anode was changed by altering the granule bed thickness (0.3 cm and 1 cm). The anode surface area was found to play a role in the dynamic response of the system. For a granule bed thickness of 1 cm and with an external resistance of 500 Ω, the response time (defined as the time required to achieve 95% of the steady-state current) was reduced by approximately 65% in comparison to a SCMFC biosensor with a carbon cloth anode.


Author(s):  
Jie Yang ◽  
Sasan Ghobadian ◽  
Reza Montazami ◽  
Nastaran Hashemi

Microbial fuel cell (MFC) technology is a promising area in the field of renewable energy because of their capability to use the energy contained in wastewater, which has been previously an untapped source of power. Microscale MFCs are desirable for their small footprints, relatively high power density, fast start-up, and environmentally-friendly process. Microbial fuel cells employ microorganisms as the biocatalysts instead of metal catalysts, which are widely applied in conventional fuel cells. MFCs are capable of generating electricity as long as nutrition is provided. Miniature MFCs have faster power generation recovery than macroscale MFCs. Additionally, since power generation density is affected by the surface-to-volume ratio, miniature MFCs can facilitate higher power density. We have designed and fabricated a microscale microbial fuel cell with a volume of 4 μL in a polydimethylsiloxane (PDMS) chamber. The anode and cathode chambers were separated by a proton exchange membrane. Carbon cloth was used for both the anode and the cathode. Shewanella Oneidensis MR-1 was chosen to be the electrogenic bacteria and was inoculated into the anode chamber. We employed Ferricyanide as the catholyte and introduced it into the cathode chamber with a constant flow rate of approximately 50 μL/hr. We used trypticase soy broth as the bacterial nutrition and added it into the anode chamber approximately every 15 hours once current dropped to base current. Using our miniature MFC, we were able to generate a maximum current of 4.62 μA.


2021 ◽  
Author(s):  
Hongyuhang Ni ◽  
Aman Khan ◽  
Zi Yang ◽  
Yuxin Gong ◽  
Gohar Ali ◽  
...  

Abstract Microbial Fuel Cell (MFC) remediate hexavalent chromium (Cr(VI)) in wastewater, but inefficient removal for wide scale. In this study, a wood carbon (WC) electrode was introduce in MFC to analyzed the Cr(VI) remediation mechanism and effect of WC on it. The results show that the Cr(VI) was completely removed with WC electrode as compare to the carbon cloth (31.12 ± 0.31%) and carbon felt (34.83% ± 0.12) within 48 hours. The maximum power density of the WC electrode was 62.59 ± 0.27 mW m− 2. Here in, WC might a good choice with a three-dimensional porous structure for Cr(VI) contaminated wastewater treatment and electricity generation in MFC.


Author(s):  
Aris Mukimin ◽  
Nur Zen ◽  
Hanny Vistanty ◽  
Purwanto Agus

Microbial fuel cell (MFC) is a new proposed technology reported to generate renewable energy while simultaneously treating wastewater. Membraneless microbial fuel cell (ML-MFC) system was developed to eliminate the requirement of membrane which is expensive and prone to clogging while enhancing electricity generation and wastewater treatment efficiency. For this purpose, a reactor was designed in two chambers and connected via three pipes (1 cm in diameter) to enhance fluid diffusion. Influent flowrate was maintained by adjusting peristaltic pump at the base of anaerobic chamber. Carbon cloth (235 cm2) was used as anode and paired with gas diffusion layer (GDL) carbon-Pt as cathode. Anaerobic sludge was filtered and used as starter feed for the anaerobic chamber. The experiment was carried out by feeding synthetic wastewater to anaerobic chamber; while current response and potential were recorded. Performance of reactor was evaluated in terms of chemical oxygen demand (COD). Electroactive microbe was inoculated from anaerobic sludge and showed current response (0.55-0.65 mA) at 0,35 V, range of diameter 1.5-2 µm. The result of microscopics can showed three different species. The microbial performance was increased by adding ferric oxide 1 mM addition as acceptor electron. The reactor was able to generate current, voltage, and electricity power of 0.36 mA, 110 mV, and 40 mWatt (1.5 Watt/m2), respectively, while reaching COD removal and maximum coulomb efficiency (EC) of 16% and 10.18%, respectively.


TECHNOLOGY ◽  
2016 ◽  
Vol 04 (02) ◽  
pp. 98-103 ◽  
Author(s):  
Niloofar Hashemi ◽  
Joshua M. Lackore ◽  
Farrokh Sharifi ◽  
Payton J. Goodrich ◽  
Megan L. Winchell ◽  
...  

Microbial fuel cells have gained popularity as a viable, environmentally friendly alternative for the production of energy. However, the challenges in miniaturizing the system for application in smaller devices as well as the short duration of operation have limited the application of these devices. Here, the capillary motion was employed to design a self-pumped paper-based microbial fuel cell operating under continuous flow condition. A proof-of-concept experiment ran approximately 5 days with no outside power or human interference required for the duration of operation. Shewanella oneidensis MR-1 was used to create a maximum current of 52.25 µA in a 52.5 µL paper-based microfluidic device. SEM images of the anode following the experiment showed biofilm formation on the carbon cloth electrode. The results showed a power density of approximately 25 W/m3 and proved unique capabilities of the paper-based microbial fuel cells to produce energy for an extended period of time.


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