Innovative microbial fuel cell design for investigation of cathode chamber effect and electricity generation enhancement

Waheeb, Hayder A.; Al-Alalawy, Ahmed Faiq

doi:10.1063/5.0000172

Cited by 7 publications

(4 citation statements)

References 19 publications

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“…While, the Na2SO4 catholyte produced the higher power density (3.068 mW/m 2 ) due to the higher catholyte electrical conductivity (9.14 mS/cm). Whereas, the electrical power generation by using dissolved ozone was about 15 times higher than by using dissolved oxygen [42].…”

Section: Introductionmentioning

confidence: 82%

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Investigation of the Influence of Membrane Type on the Performance of Microbial Fuel Cell

Waheeb

Al-Alalawy

2021

Egypt. J. Chem.

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In this work, microbial fuel cell (MFC) design of five chambers was used to investigate the effect of four types of membranes which are cation exchange membrane (CEM), Cellulose Triacetate membrane (CTA), thin film composite membrane (TFC), and proton exchange membrane (PEM). To study the influence of the membrane type on the cathode performance, the four cathode chambers were filled with 20 g/l NaCl catholyte and the sodium acetate of 1.5 g/l was supplied to the central chamber as anolyte. The results revealed that the membrane proton selectivity plays an important role in the cathodic reduction reaction for electrical generation and water production. It was observed that the PEM has a significant effect on the power generation with a maximum power density of 20.492 mW/m 2 with water production of 4.21 g/day. Whereas the competition of the other cations to the proton transfer was clearly observed by using the CTA membrane with power production of 12.646 mW/m 2 , and the abundance of the water production of 178.16 g/day was attributed to the water transport across the CTA membrane. For studying the influence of the membrane type on the anode performance, the sodium acetate of 1.5 g/l was supplied to the four chambers as an anolyte at a flow rate of 0.0272 cm 3 /sec and the central chamber were filled with 20 g/l NaCl catholyte. The salt reverse transfer from the cathode chamber to the anode chamber across the CTA membrane contributed to increasing the anolyte electrical conductivity and consequently increased the power production to 12.555 mW/m 2 . Meanwhile, the effect of the proton selectivity and the electrical resistance of the other membrane were observed in the other chambers. Thus, the usage of CEM, TFC, and PEM produced electrical power of 6.751, 3.004, and 9.712 mW/m 2 respectively.

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Section: Introductionmentioning

confidence: 82%

“…64, No. 7 (2021) was made by Plexiglas materials [42]. The MFC was configured of one central chamber surrounded by four equally sized chambers.…”

Section: Mfc Setupmentioning

confidence: 99%

Investigation of the Influence of Membrane Type on the Performance of Microbial Fuel Cell

Waheeb

Al-Alalawy

2021

Egypt. J. Chem.

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“…The Most Probable Number (MPN) method is used to determine the concentration of viable microorganisms in a sample by replicating liquid broth growth in ten-fold dilutions. It is frequently applied to the estimation of microbial populations in agricultural products, waters, and soils [33]. When samples contain particulate matter that obstructs plate count enumeration techniques, MPN tests are particularly helpful.…”

Section: Most Probable Number and Iodimetry Testsmentioning

confidence: 99%

The Effects of Operating Variables on Efficancy of Water Disinfection by Sodium Hypochlorite Using Al-Wathba Wastewater

Namoos

Abdul-Wahab

Abdul‐Majeed

2023

IJCPE

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The aim of this investigation was to study the impact of various reaction parameters on wastewater taken from Al-Wathba water treatment plant on Tigris River in south of Baghdad, Iraq with sodium hypochlorite solution. The parameters studied were sodium hypochlorite dose, contact time, initial fecal coliform bacteria concentration, temperature, and pH. In a batch reactor, different concentrations of sodium hypochlorite solution were used to disinfect 1L of water. The amount of hypochlorite ions in disinfected water was measured using an Iodimetry test for different reaction times, whereas the Most Probable Number (MPN) test was used to determine the concentration of coliform bacteria. Total Plate Count (TPC) was utilized in this study to count the number of colonies of common bacteria. Reaction variables that were examined showed that the increase in temperature, pH, and reaction time caused the concentration of Coliform bacteria to decrease, which in turn caused an accumulation-related increase in OCl- concentration. The optimum values of temperature and reaction pH were determined to be 8 and 29o C respectively. The kinetics of the reaction was examined in this study, and the results showed that Selleck model's order of reaction is two, with rate constants of 1.3791x10-5, 3.0806x10-5, and 5.738x10-5 L/(mole min) at 20o, 29o, and 37o C, respectively.

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“…This technology could be considered for developing in the future in adopting back-to-nature concepts that use natural organic substrates [9,10], such as wastewater-based biomass, enriching carbons, and nutrients utilized by the electrogenic bacteria [11,12]. The research of MFC is still lacking in power generation affected by high internal resistance [13,14] and affected by parameters' control (pH, and temperature) [15], anolyte [16], catholyte [17][18][19][20], inoculum [21,22], anode [23,24], cathode [25,26], electrode spacing [27,28], separator [29,30], flowrate [31,32], retention time [33], wiring system [34], design/construction [35], and configuration [36][37][38]. Design and configuration modifications are studied since the highest internal resistance mostly occurs on the anode chamber.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Power Generation and Organic Removal in Double Anode Chamber Designed Dual-Chamber Microbial Fuel Cell (DAC-DCMFC)

Samudro

Imai

Hung

2021

Water

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One of the important factors in enhancing the performance of microbial fuel cells (MFCs) is reactor design and configuration. Therefore, this study was conducted to evaluate the regressors and their operating parameters affecting the double anode chamber–designed dual-chamber microbial fuel cell (DAC-DCMFC) performance. Its primary design consists of two anode chamber compartments equipped with a separator and cathode chamber. The DAC-DCMFCs were parallelly operated over 8 days (60 days after the acclimation period). They were intermittently pump-fed with the different organic loading rates (OLRs), using chemically enriched sucrose as artificial wastewater. The applied OLRs were adjusted at low, medium, and high ranges from 0.4 kg.m−3.d−1 to 2.5 kg.m−3.d−1. The reactor types were type 1 and type 2 with different cathode materials. The pH, temperature, oxidation-reduction potential (ORP), optical density 600 (OD600), chemical oxygen demand (COD), and total organic carbon (TOC) were measured, using standard analytical instruments. In general, the power production achieved a maximum of 866 ± 44 mW/m2, with a volumetric power density of 5.15 ± 0.26 W/m3 and coulombic efficiency of 84%. Two-stage COD and TOC removal at medium OLR achieved a range of 60–80%. Medium OLR is the recommended level to enhance power production and organic removal in DAC-DCMFC. The separated anode chambers into two parts in a dual anode chamber microbial fuel cell adjusted by various organic loadings expressed a preferable comprehension in the integrated MFCs for wastewater treatment.

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Innovative microbial fuel cell design for investigation of cathode chamber effect and electricity generation enhancement

Cited by 7 publications

References 19 publications

Investigation of the Influence of Membrane Type on the Performance of Microbial Fuel Cell

Investigation of the Influence of Membrane Type on the Performance of Microbial Fuel Cell

The Effects of Operating Variables on Efficancy of Water Disinfection by Sodium Hypochlorite Using Al-Wathba Wastewater

Enhancement of Power Generation and Organic Removal in Double Anode Chamber Designed Dual-Chamber Microbial Fuel Cell (DAC-DCMFC)

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