Effects of organic loading rates on the continuous electricity generation from fermented wastewater using a single-chamber microbial fuel cell

Nam, Joo-Youn; Kim, Hyun-Woo; Lim, Kyeong-Ho; Shin, Hang‐Sik

doi:10.1016/j.biortech.2009.03.062

Cited by 153 publications

(56 citation statements)

References 27 publications

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“…The highest internal resistance of 474.58 Ω was achieved with the highest COD of 17 143 mg/L. The internal resistance increases if the substrate has colloidal particles, as is the case for vinasses (Nam et al 2010). Contrary to what was expected, Martin et al (2010) found out that using glucose in a MFC, the lowest internal resistance was achieved using the highest glucose load, suggesting that a high volatile fatty acid concentration resulted not only in the increase of ionic strength, but also the catalytic activity and density of anodophilic microorganisms increased, which resulted in the internal resistance drop.…”

Section: P = V X I V Anodementioning

confidence: 92%

“…Regarding the test using vinasses with a COD of 10 604 mg/L, during the first 34 days, a low voltage, between 0.006 and 0.1 V was recorded. Because of the high COD, the reactants availability was not very high during the initial phase, until the hydrolysis of vinasses took place (Nam et al 2010). When using vinasses with a higher COD concentration, more organic matter needs to be degraded before a significant electron and proton exchange starts and higher voltages can be produced.…”

Section: Effect Of Cod In Voltage Outputmentioning

confidence: 99%

“…A portion of the substrate is used for biomass synthesis. Complex substrates, as in the case of vinasses with high COD, lead to high internal resistance and low power output (Nam et al 2010). The anodic reactions thus increase electricity production when carbon sources are available with a low COD.…”

Section: Effect Of Cod In Voltage Outputmentioning

confidence: 99%

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Performance of a Microbial Fuel Cell Operated With Vinasses Using Different Cod Concentrations

Santos

Valadez

Solís

et al. 2017

Rev. Int. Contam. Ambie.

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Vinasses are one of the main wastes generated from the mezcal industry in Mexico. Due to their high organic matter content and low pH, vinasses have negative environmental impacts if discharged without any treatment. An alternative treatment of vinasses is their use in microbial fuel cells (MFC) for organic matter removal and electricity production. In this paper, the performance of a MFC using vinasses is analyzed. Different organic matter concentrations in terms of chemical oxygen demand (COD) were tested and compared regarding power density, internal resistance, and voltage production. The results demonstrated that the highest COD tested resulted in a poor MFC performance. When using vinasses in MFC for 10 days, COD of 6000 mg/L generated 80.64 W/m 3 and when using vinasses with a COD of 17 143 mg/L, the power density dropped to 5.13 W/m 3 . Further tests of COD performance in MFC were made with 10 640 and 6760 mg/L for 68 days. It was demonstrated that a COD of 10 604 mg/L only produced 0.61 V, while a COD of 6760 mg/L reached 0.81 V. Regarding the organic matter removal, the highest COD removed (92 %) was obtained when using vinasses with a COD of 10 604 mg/L. By operating the cell with 6000 mg/L, COD removal was 83 % and with 17 143 mg/L, 49 %. To achieve a better MFC performance, the organic matter content in the electrolyte should not exceed 6000 mg/L so that the MFC does not achieve a saturated state that hinders the oxidation mechanisms and thus electricity production and COD removal.Palabras clave: Agave, demanda química de oxígeno, remoción de materia orgánica, producción de electricidad RESUMENLas vinazas son uno de los principales residuos generados por la industria del mezcal en México. Debido a su alto contenido de materia orgánica y bajo pH, las vinazas tienen impactos ambientales negativos si se descargan sin tratamiento alguno. Un tratamiento alternativo de las vinazas es su utilización en celdas de combustible microbianas (CCM) M. López Velarde Santos et al. 522 para la disminución de materia orgánica y la producción de electricidad. En este trabajo se analiza el rendimiento de una CCM operada con vinazas. Diferentes concentraciones de materia orgánica en términos de demanda química de oxígeno (DQO) se utilizaron y compararon con respecto a la densidad de potencia, resistencia interna y la producción de voltaje. Los resultados demostraron que la DQO más alta, dio como resultado un pobre rendimiento de la CCM. Al utilizar las vinazas en la CCM durante 10 días, una DQO de 6000 mg/L generó 80.64 W/m 3 y utilizando las vinazas con una DQO de 17 143 mg/L, la densidad de potencia se redujo a 5.13 W/m 3 . Otras pruebas de rendimiento de la DQO en la CCM se llevaron a cabo por 68 días con DQO de 10 640 y 6760 mg/L. Se demostró que una DQO de 10 604 mg/L sólo produjo 0.61 V, mientras que una DQO de 6760 mg/L alcanzó 0.81 V. En cuanto a la remoción de materia orgánica, la mayor remoción de DQO (92 %) se obtuvo utilizando vinazas en la CCM con 10 604 mg/L de DQO. Utilizando una DQO de 6000 mg/L,...

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Section: P = V X I V Anodementioning

confidence: 92%

Section: Effect Of Cod In Voltage Outputmentioning

confidence: 99%

See 1 more Smart Citation

Performance of a Microbial Fuel Cell Operated With Vinasses Using Different Cod Concentrations

Santos

Valadez

Solís

et al. 2017

Rev. Int. Contam. Ambie.

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“…First, the MFC is a biofilm based system, and the accumulation of biomass mainly resides on the electrode except of occasional biofilm falloff, so the suspended solid is low. Another reason is due to the low cell yield of the anoxic to anaerobic microorganisms in the MFC compared to the activated sludge [58][59][60][61][62][63][64][65][66][67]. …”

Section: F Effect Of Total Suspended Solidsmentioning

confidence: 99%

Studies on Sustainable Power Estimation from Local Waste Waters Using Microbial Fuel Cells

Raju¹

2017

IJRASET

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Eco system is deteriorating day by day due to Industrial effluents. The effluents are containing toxic chemicals which are inturn polluting ground drinking water and creating new diseases. Treatment methods for these Industrial effluents are becoming more costly. The Present study is aimed and focused at decreasing the toxicity of Industrial waters and the target is Reduction, Recycle and Reuse (RRR) using Microbial Fuel Cell. Microbial Fuel Cell experiments were carried out in batch operations for Appughar waste water using Bakers yeast (saccharomyces cerevisiae organism) in order to increase oxygen levels and decrease toxicity. The parameters studied are design of MFC, NaCl concentration, Agar concentration, fructose dosage, pH, COD, BOD, DO, TSS, TDS, Sulphates, Chlorides and Power generation. The results produced have high oxygen levels and change of pH is appreciable from 7.8 to 7.0. COD, BOD and DO have changed from 1050 to 450 ppm, 560 to 220 ppm and 2.5 to 4.2 ppm.

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“…Carbon based materials are widely used for MFC electrodes. Power densities of 148 mW/m 2 have been recorded for carbon paper (CP) [4], 422 mW/m 2 for graphite fiber brush [5], 250 mW/m 2 for carbon cloth [6] and 2600 W/m 2 for carbon felt [7]. Challenges with the use of these materials include high prices, clogging (especially with graphite fiber brush), large resistance and fragility [8].…”

Section: Introductionmentioning

confidence: 99%

A Viable Electrode Material for Use in Microbial Fuel Cells for Tropical Regions

et al. 2016

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Electrode materials are critical for microbial fuel cells (MFC) since they influence the construction and operational costs. This study introduces a simple and efficient electrode material in the form of palm kernel shell activated carbon (AC) obtained in tropical regions. The novel introduction of this material is also targeted at introducing an inexpensive and durable electrode material, which can be produced in rural communities to improve the viability of MFCs. The maximum voltage and power density obtained (under 1000 Ω load) using an H-shaped MFC with AC as both anode and cathode electrode material was 0.66 V and 1.74 W/m 3 , respectively. The power generated by AC was as high as 86% of the value obtained with the extensively used carbon paper. Scanning electron microscopy and Denaturing Gradient Gel Electrophoresis (DGGE) analysis of AC anode biofilms confirmed that electrogenic bacteria were present on the electrode surface for substrate oxidation and the formation of nanowires.

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Effects of organic loading rates on the continuous electricity generation from fermented wastewater using a single-chamber microbial fuel cell

Cited by 153 publications

References 27 publications

Performance of a Microbial Fuel Cell Operated With Vinasses Using Different Cod Concentrations

Performance of a Microbial Fuel Cell Operated With Vinasses Using Different Cod Concentrations

Studies on Sustainable Power Estimation from Local Waste Waters Using Microbial Fuel Cells

A Viable Electrode Material for Use in Microbial Fuel Cells for Tropical Regions

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