Operation of a horizontal subsurface flow constructed wetland – Microbial fuel cell treating wastewater under different organic loading rates

Villaseñor, José; Capilla, Poyatos; Rodrigo, Manuel A.; Cañizares, Pablo; Fernández, Francisco J.

doi:10.1016/j.watres.2013.09.005

Cited by 244 publications

(91 citation statements)

References 29 publications

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“…However, the resistance of the VSFCW-MFC was high, consistent with a previous report (internal resistance 188 Ω) [15]. This might be attributable to the poor contact between the GAC and the steel mesh as well as the large distance between the two electrodes, which caused a decrease in the power density compared to the 9.8 W/m 3 with SW [18,29].…”

Section: Bioelectricity Generation With Different Electrode Spacingssupporting

confidence: 89%

“…Oxygen demand in the wastewater decreased and DO was gradually replenished, entering the cathode compartment at a high concentration compared to other studies [18]. In addition, the macrophytes raised the DO concentration and simultaneously produced negligible rhizodeposits.…”

Section: Effects Of Do On Voltage In the Vsfcw-mfc Systemmentioning

confidence: 68%

“…Polymeric organic substrate wastewater passing through the anode flushes the cathode and causes a decrease in the cathode potential, which results in a decrease in electricity production. Villasenor et al reported that degradation efficiency decreased with increasing chemical oxygen demand (COD) and concentration, and correspondingly, the electricity produced in a horizontal subsurface flow CW-MFC decreased [18].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Bioelectricity Generation in Constructed Wetland-Coupled Microbial Fuel Cell Systems

Song

Zhang

Long

et al. 2017

Water

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Constructed wetland-coupled microbial fuel cell systems (CW-MFCs) incorporate an aerobic zone and an anaerobic zone to generate electricity that achieves the oxidative degradation of contaminants. However, there are few reports on the performance of such coupled systems. In this study, we determined the optimal configuration of CW-MFCs to characterize their electricity generation performance. Based on the results using different levels of dissolved oxygen among the CW-MFCs, we concluded that a 20-cm distance between the anode and cathode produced an optimal removal of chemical oxygen demand (COD) of 94.90% with a 0.15 W/m 3 power density, 339.80 Ω internal resistance, and 0.31% coulombic efficiency. In addition, a COD of 200 mg/L provided greater electricity generation (741 mV open circuit voltage, 0.20 W/m 3 power density, 339.80 Ω internal resistance, and 0.49 mA current) and purification ability (90.45% COD removal) to meet system COD loading limitations than did higher COD values. By adding 50 mM phosphate buffer solution to synthetic wastewater, relatively high conductivity and buffer capacity were achieved, resulting in improvement in electricity generation. These findings highlight important aspects of bioelectricity generation in CW-MFCs.

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Section: Bioelectricity Generation With Different Electrode Spacingssupporting

confidence: 89%

Section: Effects Of Do On Voltage In the Vsfcw-mfc Systemmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

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Optimization of Bioelectricity Generation in Constructed Wetland-Coupled Microbial Fuel Cell Systems

Song

Zhang

Long

et al. 2017

Water

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“…Comparing the performances among different structures of MFC-CWs depends on the size of the coulomb efficiency and power density. [15] conducted an experiment that the MFC-CW worked under continuous operation for 180 d, treating three types of synthetic wastewater with increasing organic loading rates of 13.9g COD/m 2 ·d, 31.1gCOD/m 2 ·d and 61.1gCOD/m 2 ·d. The results indicated that under low organic loading rates, the wastewater organic matter was completely oxidized in the lower anaerobic compartment, and there were slight aerobic conditions in the upper cathodic compartment, thus causing an electrical current.…”

Section: Mfc-cws Profilementioning

confidence: 99%

A review of microbial fuel cells coupled with constructed wetland

Li¹,

Qian²,

Ding³

et al. 2016

Proceedings of the 2016 5th International Conference on Sustainable Energy and Environment Engineering (ICSEEE 2016)

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Microbial fuel cell (MFC) coupled with constructed wetland (CW) is an innovative technology for wastewater treatment. Based on the current studies, the article reviewed the configuration and evaluation indicators of CW-MFC, and discussed the influence factors of MFC-CW performance, including pH, electron donors and acceptors, electrode materials, the electrode spacing and CW matrixes. Key unresolved issues were concluded for potential applications of MFC-CW in the future.

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“…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). La eficiencia de remoción de diversos contaminantes por este sistema integrado se ha reportado para fármacos , residuos de la industria ganadera (Doherty et al, 2015b;Zhao et al, 2013), colorantes azoicos (Yadab et al, 2012;Fang et al, 2015;Fang et al, 2016) y subproductos del tratamiento de aguas residuales (Corbella et al, 2016;Wu et al, 2017).…”

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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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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Operation of a horizontal subsurface flow constructed wetland – Microbial fuel cell treating wastewater under different organic loading rates

Cited by 244 publications

References 29 publications

Optimization of Bioelectricity Generation in Constructed Wetland-Coupled Microbial Fuel Cell Systems

Optimization of Bioelectricity Generation in Constructed Wetland-Coupled Microbial Fuel Cell Systems

A review of microbial fuel cells coupled with constructed wetland

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

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