High speed municipal sewage treatment in microbial fuel cell integrated with anaerobic membrane filtration system

2014 ◽  
Vol 69 (12) ◽  
pp. 2548-2553 ◽  
Author(s):  
Y. Lee ◽  
S. W. Oa
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
High Speed ◽  
Membrane Filtration ◽  
Membrane Filter ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Organic Substrate ◽  
Municipal Sewage ◽  
Filtration System

A cylindrical two chambered microbial fuel cell (MFC) integrated with an anaerobic membrane filter was designed and constructed to evaluate bioelectricity generation and removal efficiency of organic substrate (glucose or domestic wastewater) depending on organic loading rates (OLRs). The MFC was continuously operated with OLRs 3.75, 5.0, 6.25, and 9.38 kg chemical oxygen demand (COD)/(m3·d) using glucose as a substrate, and the cathode chamber was maintained at 5–7 mg/L of dissolved oxygen. The optimal OLR was found to be 6.25 kgCOD/(m3·d) (hydraulic retention time (HRT) 1.9 h), and the corresponding voltage and power density averaged during the operation were 0.15 V and 13.6 mW/m3. With OLR 6.25 kgCOD/(m3·d) using domestic wastewater as a substrate, the voltage and power reached to 0.13 V and 91 mW/m3 in the air cathode system. Even though a relatively short HRT of 1.9 h was applied, stable effluent could be obtained by the membrane filtration system and the following air purging. In addition, the short HRT would provide economic benefit in terms of reduction of construction and operating costs compared with a conventional aerobic treatment process.

scholarly journals Scale up of Microbial Fuel Cell Stack System for Residential Wastewater Treatment in Continuous Mode Operation

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 217 ◽  
Author(s):  
Rodrigo Valladares Linares ◽  
Jorge Domínguez-Maldonado ◽  
Ernesto Rodríguez-Leal ◽  
Gabriel Patrón ◽  
Alfonso Castillo-Hernández ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Scale Up ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Septic Tank ◽  
Efficient Technology ◽  
Fuel Cell Stack ◽  
Treated Effluent

The most important operational expense during wastewater treatment is electricity for pumping and aeration. Therefore, this work evaluated operational parameters and contaminant removal efficiency of a microbial fuel cell stack system (MFCSS) that uses no electricity. This system consists of (i) septic tank primary treatment, (ii) chamber for secondary treatment containing 18 MFCs, coupled to an energy-harvesting circuit (EHC) that stores the electrons produced by anaerobic respiration, and (iii) gravity-driven disinfection (sodium hypochlorite 5%). The MFCSS operated during 60 days (after stabilization period) and it was gravity-fed with real domestic wastewater from a house (5 inhabitants). The flow rate was 600 ± 100 L∙d−1. The chemical oxygen demand, biological oxygen demand, total nitrogen and total phosphorous were measured in effluent, with values of 100 ± 10; 12 ± 2; 9.6 ± 0.5 and 4 ± 0.2 mg∙L−1, and removal values of 86%, 87%, 84% and 64%, respectively. Likewise, an EHC (ultra-low energy consumption) was built with 6.3 V UCC® 4700 µF capacitors that harvested and stored energy from MFCs in parallel. Energy management was programmed on a microcontroller Atmega 328PB®. The water quality of the treated effluent complied with the maximum levels set by the Mexican Official Standard NOM-001-SEMARNAT-1996-C. A cost analysis showed that MFCSS could be competitive as a sustainable and energy-efficient technology for real domestic wastewater treatment.

scholarly journals Factors Affecting the Performance of Double Chamber Microbial Fuel Cell for Simultaneous Wastewater Treatment and Power Generation

2013 ◽  
Vol 15 (1) ◽  
pp. 7-11 ◽  
Author(s):  
Maksudur R. Khan ◽  
M.S.A. Amin ◽  
M.T. Rahman ◽  
F. Akbar ◽  
K. Ferdaus
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Azo Dye ◽  
Electricity Generation ◽  
Oxygen Demand ◽  
Organic Substrate ◽  
Cod Removal ◽  
Factors Affecting ◽  
Operation Conditions ◽  
Double Chamber

Electricity generation from the readily biodegradable organic substrate (glucose) accompanied by decolorization of azo dye was investigated using a two-chamber microbial fuel cell (MFC). Batch experiments were conducted to study the effect of dye and substrate concentration on MFC performance. Electricity generation was not significantly affected by the azo dye at 300 mg/L, while higher concentrations inhibited electricity generation. The chemical oxygen demand (COD) removal and decolorization of dye containing wastewater used in the MFC were studied at optimum operation conditions in anode and cathode, 57% COD removal and 70% dye removal were achieved. This study also demonstrated the effect of different catholyte solutions, such as KMnO4 and K2Cr2O7 on electricity generation. As a result, KMnO4 solution showed the maximum electricity generation due to its higher standard reduction potential.

scholarly journals Potensi Perolehan Energi Listrik dalam Proses Pengolahan Limbah Tahu Melalui Microbial Fuel Cell (MFC)

2020 ◽  
Vol 3 (2) ◽  
pp. 41-50
Author(s):  
Ayu Diah Syafaati ◽  
Diana Rahayuning Wulan ◽  
Irwan Nugraha
Keyword(s):  
Fuel Cell ◽  
Chemical Oxygen Demand ◽  
Microbial Fuel Cell ◽  
Alternative Energy ◽  
Liquid Waste ◽  
Oxygen Demand ◽  
Electrical Energy ◽  
Organic Substrate ◽  
Proton Exchange ◽  
Single Chamber

Abstract - The need of energy in Indonesia was increasing and encouraging to develope some efficient   renewable   technology   and   environmental   friendly   researches.   One   of   the alternative energy that can be used is Microbial Fuel Cell (MFC). Microbial Fuel Cell (MFC) works by using microorganisms to degrade organic compounds that can generate electrical energy.   Several   studies   have   been   conducted   on   Single   Chamber   MFC.   In   this   study, conducted to determine the effect of wastewater treatment through Stack Microbial Fuel Cell (MFC) on current producing. The system used carbon brush electrode, Proton Exchange Membrane (PEM) as cation exchanger, tofu liquid waste as source of substrate, and bacterial isolated tofu liquid waste as degrading organic substrate, that has known in system's ability to generate electrical energy as well as reduce COD value. Optical Density (OD) value was measured to determine the metabolic activity of bacteria, with wavelength 570 nm. The research showed that Microbial Fuel Cell (MFC) that lasted for 72 hours resulted potential of electrical current  0.96 mA at  Stack MFC and Blank 0,43 mA.  The acquisition of electric current Stack MFC was greater than Blank Single Chamber. In addition, it also decreased Chemical Oxygen Demand (COD) value in the range of 28-38%. Keywords -  Chemical Oxygen Demand, Current, Microbial Fuel Cell , Stack MFC, Tofu liquid waste

Membrane‐electrode assembly enhances performance of a microbial fuel cell type biological oxygen demand sensor

2009 ◽  
Vol 30 (4) ◽  
pp. 329-336 ◽  
Author(s):  
Mia Kim ◽  
Moon Sik Hyun ◽  
Geoffrey M. Gadd ◽  
Gwang Tae Kim ◽  
Sang‐Joon Lee ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Oxygen Demand ◽  
Membrane Electrode Assembly ◽  
Biological Oxygen Demand ◽  
Membrane Electrode ◽  
Cell Type

Membrane filtration biocathode microbial fuel cell for nitrogen removal and electricity generation

2014 ◽  
Vol 60 ◽  
pp. 56-63 ◽  
Author(s):  
Guangyi Zhang ◽  
Hanmin Zhang ◽  
Yanjie Ma ◽  
Guangen Yuan ◽  
Fenglin Yang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Nitrogen Removal ◽  
Electricity Generation ◽  
Membrane Filtration

Effect of Different Mediators on Bio-Energy Generation and Palm Oil Mill Effluent Treatment in an Air-Cathode Microbial Fuel Cell-Adsorption System

2021 ◽  
Vol 411 ◽  
pp. 67-78
Author(s):  
Ivy Ai Wei Tan ◽  
J.R. Selvanathan ◽  
M.O. Abdullah ◽  
N. Abdul Wahab ◽  
D. Kanakaraju
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Palm Oil ◽  
Oxygen Demand ◽  
Energy Generation ◽  
Effluent Treatment ◽  
Palm Oil Mill Effluent ◽  
Adsorption System ◽  
Air Cathode ◽  
Palm Oil Mill

Palm oil mill effluent (POME) discharged without treatment into watercourses can pollute the water source. Microbial fuel cell (MFC) has gained high attention as a green technology of converting organic wastewater into bio-energy. As an approach to overcome the limitations of the existing POME treatment methods, air-cathode MFC-Adsorption system is introduced as an innovative technology to treat POME and generate bio-electricity simultaneously. However, the use of conventional MFC with proton exchange membrane in large scale applications is restricted by the high cost and low power generation. Addition of mediator in MFC is essential in order to increase the electron transfer efficiency, hence enhancing the system performance. This study therefore aims to investigate the effect of different type of mediators i.e. congo red (CR), crystal violet (CV) and methylene blue (MB) on the performance of an affordable air-cathode MFC-Adsorption system made from earthen pot with POME as the substrate. The addition of different mediators altered the pH of the MFC-Adsorption system, in which more alkaline system showed better performance. The voltage generated in the system with CR, CV and MB mediator was 120.58 mV, 168.63 mV and 189.25 mV whereas the current generated was 2.41 mA, 3.37 mA and 3.79 mA, respectively. The power density of 290.79 mW/m3, 568.72 mW/m3 and 716.31 mW/m3 was produced in the MFC-Adsorption system with CR, CV and MB mediator, respectively. The highest POME treatment efficiency was achieved in MFC-Adsorption system with MB mediator, which resulted in biochemical oxygen demand, chemical oxygen demand, total suspended solids, turbidity and ammoniacal nitrogen removal of 75.3%, 84.8%, 91.5%, 86.1% and 23.31%, respectively. Overall, the air-cathode MFC-Adsorption system with addition of MB mediator was feasible for POME treatment and simultaneous bio-energy generation.

scholarly journals Effect of Anolyte pH on the Performance of a Dual-Chambered Microbial Fuel Cell Operated with Different Biomass Feed

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Md. Abdul Halim ◽  
Md. Owaleur Rahman ◽  
Mohammad Ibrahim ◽  
Rituparna Kundu ◽  
Biplob Kumar Biswas
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
River Water ◽  
Microbial Fuel Cell ◽  
Alternative Energy ◽  
Coulombic Efficiency ◽  
Oxygen Demand ◽  
Cod Removal ◽  
Bioelectricity Generation ◽  
Alternative Energy Resources

Finding sustainable alternative energy resources and treating wastewater are the two most important issues that need to be solved. Microbial fuel cell (MFC) technology has demonstrated a tremendous potential in bioelectricity generation with wastewater treatment. Since wastewater can be used as a source of electrolyte for the MFC, the salient point of this study was to investigate the effect of pH on bioelectricity production using various biomass feed (wastewater and river water) as the anolyte in a dual-chambered MFC. Maximum extents of power density (1459.02 mW·m−2), current density (1288.9 mA·m−2), and voltage (1132 mV) were obtained at pH 8 by using Bhairab river water as a feedstock in the MFC. A substantial extent of chemical oxygen demand (COD) removal (94%) as well as coulombic efficiency (41.7%) was also achieved in the same chamber at pH 8. The overall performance of the MFC, in terms of bioelectricity generation, COD removal, and coulombic efficiency, indicates a plausible utilization of the MFC for wastewater treatment as well as bioelectricity production.

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