Bio-cathode materials evaluation and configuration optimization for power output of vertical subsurface flow constructed wetland — Microbial fuel cell systems

Liu, Shentan; Song, Hai-Liang; Wei, Size; Yang, Fei

doi:10.1016/j.biortech.2014.05.104

Cited by 198 publications

(41 citation statements)

References 35 publications

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“…Liu et al (2014) observaron que una concentración de DQO superior a 250 mg/L disminuye la densidad de potencia obtenida, debido a que se incrementa la posibilidad de que una alta concentración de materia orgánica llegue al cátodo, provocando un aumento en la demanda de oxígeno, con lo que se limita el oxígeno disponible para las reacciones de reducción necesarias para cerrar el circuito. Por otra parte, Fang et al (2015) reportaron que a una concentración de 300 mg/L de DQO se obtuvo un mayor rendimiento del HC-CCM, logrando una tasa de decoloración y densidad de potencia de 95.6% y 0.852 W/m 3 , respectivamente.…”

Section: Sustratounclassified

“…Tanto las CCM como los HC poseen zonas aerobias y anaerobias, donde se producen simultáneamente reacciones de óxido -reducción (Liu et al, 2014). Los sistemas de HC acoplados a CCM (HC-CCM) son una tecnología innovadora que integra ambos dispositivos para el tratamiento de aguas residuales y generación de energía, confiables y adecuados para la operación a largo plazo (Villaseñor et al, 2013;Corbella et al, 2014).…”

Section: Introductionunclassified

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Aspectos relevantes del diseño de humedales construidos acoplados a sistemas bioelectroquímicos para el tratamiento de efluentes y generación de energía

et al. 2018

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The energy crisis, water scarcity and poor air quality are issues that must be addressed urgently in order to ensure the well-being of the population. The use of alternative technologies such as constructed wetlands (CW) allow the treatment of different wastewaters. When these technologies are coupled to bioelectrochemical systems (BES), the removal of the organic load can be optimized and electrical energy can be generated. Thus, the aim of this work was to perform an analysis of the advances, from 2010 to 2017, on the design of various configurations of CW systems coupled to BES. It was possible to identify the most important variables that determine the efficiency of removal of pollutants and current generation such as anodic and cathodic materials, area of electrodes, type of macrophytes and material organic removed. Likewise, the values of the organic material removed and the maximum power densities obtained with the three most used macrophytes are presented.

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Section: Sustratounclassified

Section: Introductionunclassified

Aspectos relevantes del diseño de humedales construidos acoplados a sistemas bioelectroquímicos para el tratamiento de efluentes y generación de energía

et al. 2018

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“…It's a research hotspot in environmental and new energy fields in recent years [3]. Research suggested that microorganisms can also act as catalysts and use cathodic electrodes as an organic electron donor for metabolic activity [4]. Because of the reduced use of chemical catalysts, the bio-cathode of MFC is more conform the concept of sustainable development.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydraulic Retention Time on MFC-A2/O Process for Domestic Wastewater Treatment

Luo¹,

Gao²,

Liu³

et al. 2017

dteees

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Abstract. A 10L scale MFC coupled A2/O system was built, with the anaerobic tank as anode chamber to remove carbon and the anoxic tank as cathode chamber to denitrify. This coupled system could achieve max output current after 30 days. During the study phase, the hydraulic retention time (HRT) was optimized to improve wastewater treatment efficiency and power generation. The results showed that the coupled system could obtain best pollutants removal effect when HRT=16h. Compared with control reactor, concentrations of COD and TN in the effluent of the coupled system could be reduced by 14.6% and 10.1%. And the power density (external resistance = 100Ω) of the coupled system was 612mW/m3 in the meantime. Correspondingly, the optimum HRT when the coupled system achieved highest power generation was 12h, and the max power density was 808mW/m3.

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“…Both constructed wetland and microbial fuel cells comprise an aerobic and anaerobic zone based on a dissolved oxygen concentration, and reduction and oxidation may take place in both reactors. These similarities form the basis of the combination of two units [8]. CW-MFC have been applied to treat azo dye wastewater.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Oil Wastewater and Electricity Generation by Integrating Constructed Wetland with Microbial Fuel Cell

Yang

Liu

et al. 2016

Materials

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Conventional oil sewage treatment methods can achieve satisfactory removal efficiency, but energy consumption problems during the process of oil sewage treatment are worth attention. The integration of a constructed wetland reactor and a microbial fuel cell reactor (CW-MFC) to treat oil-contaminated wastewater, compared with a microbial fuel cell reactor (MFC) alone and a constructed wetland reactor (CW) alone, was explored in this research. Performances of the three reactors including chemical oxygen demand (COD), oil removal, and output voltage generation were continuously monitored. The COD removals of three reactors were between 73% and 75%, and oil removals were over 95.7%. Compared with MFC, the CW-MFC with a MnO2 modified cathode produced higher power density and output voltage. Maximum power densities of CW-MFC and MFC were 3868 mW/m3 (102 mW/m2) and 3044 mW/m3 (80 mW/m2), respectively. The plants in CW-MFC play a positive role for reactor cathode potential. Both plants and cathode modification can improve reactor performance of electricity generation.

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Bio-cathode materials evaluation and configuration optimization for power output of vertical subsurface flow constructed wetland — Microbial fuel cell systems

Cited by 198 publications

References 35 publications

Aspectos relevantes del diseño de humedales construidos acoplados a sistemas bioelectroquímicos para el tratamiento de efluentes y generación de energía

Aspectos relevantes del diseño de humedales construidos acoplados a sistemas bioelectroquímicos para el tratamiento de efluentes y generación de energía

Effect of Hydraulic Retention Time on MFC-A2/O Process for Domestic Wastewater Treatment

Treatment of Oil Wastewater and Electricity Generation by Integrating Constructed Wetland with Microbial Fuel Cell

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