Triclosan Removal in Microbial Fuel Cell: The Contribution of Adsorption and Bioelectricity Generation

The occurrence of Triclosan (TCS) in natural aquatic systems has been drawing increasing attention due to its endocrine-disruption effects as well as for the development of antibiotic resistances. Wastewater discharge is the main source of water contamination by TCS. In this study, the removal of TCS in microbial fuel cells (MFCs) was carefully investigated. A 94% removal of TCS was observed with 60 mV electricity generation as well as a slight drop in pH. In addition, we found that adsorption also contributed to the removal of TCS in aqueous solution and 21.73% and 19.92% of the total mass was adsorbed to the inner wall of the reactor and to the electrode, respectively. The results revealed that the attenuation of TCS depends on both biodegradation and physical adsorption in the anode chamber. Thus, the outcomes of our study provide a better understanding of the TCS removal mechanism in MFCs.

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Evaluation of microbial fuel cell (MFC) for bioelectricity generation and pollutants removal from sugar beet processing wastewater (SBPW)

Water Science & Technology ◽

10.2166/wst.2017.549 ◽

2017 ◽

Vol 77 (2) ◽

pp. 387-397 ◽

Cited By ~ 3

Author(s):

Atikur Rahman ◽

Md Saidul Borhan ◽

Shafiqur Rahman

Keyword(s):

Wastewater Treatment ◽

Sugar Beet ◽

Microbial Fuel Cells ◽

Electricity Generation ◽

Coulombic Efficiency ◽

Pollutant Removal ◽

Microbial Consortia ◽

Anode Chamber ◽

Batch Mode ◽

Bioelectricity Generation

AbstractBioelectricity generation from biodegradable compounds using microbial fuel cells (MFCs) offers an opportunity for simultaneous wastewater treatment. This study evaluated the synergy of electricity generation by the MFC while reducing pollutants from sugar beet processing wastewater (SBPW). A simple dual-chamber MFC was constructed with inexpensive materials without using catalysts. Raw SBPW was diluted to several concentrations (chemical oxygen demand (COD) of 505 to 5,750 mg L−1) and fed as batch-mode into the MFC without further modification. A power density of 14.9 mW m−2 as power output was observed at a COD concentration of 2,565 mg L−1. Coulombic efficiency varied from 6.21% to 0.73%, indicating diffusion of oxygen through the cation exchange membrane and other methanogenesis and fermentation processes occurring in the anode chamber. In this study, >97% of the COD and up to 100% of the total suspended solids removals were observed from MFC-treated SBPW. Scanning electron microscopy of anode indicated that a diverse community of microbial consortia was active for electricity generation and wastewater treatment. This study demonstrated that SBPW can be used as a substrate in the MFC to generate electricity as well as to treat for pollutant removal.

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Bioelectricity generation from different biomass feed at anode chamber and to study process parameters in microbial fuel cells

Biocatalysis and Agricultural Biotechnology ◽

10.1016/j.bcab.2019.101191 ◽

2019 ◽

Vol 20 ◽

pp. 101191 ◽

Cited By ~ 1

Author(s):

Gandham Harshitha ◽

Abanti Sahoo ◽

Rashmita Sethy

Keyword(s):

Fuel Cells ◽

Process Parameters ◽

Microbial Fuel Cells ◽

Anode Chamber ◽

Bioelectricity Generation ◽

Study Process

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High Bioelectricity Generation by Microbial Fuel Cells (MFCs) Inoculated Enterococcus faecium YC 201

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.838-841.2461 ◽

2013 ◽

Vol 838-841 ◽

pp. 2461-2465 ◽

Cited By ~ 1

Author(s):

Li Chun Wu ◽

Chi Huang ◽

Hsin Hui Wang ◽

Ying Chien Chung

Keyword(s):

Fuel Cells ◽

Microbial Fuel Cells ◽

Electricity Generation ◽

High Power Density ◽

Bioelectricity Generation ◽

The Past ◽

Wastewater Pollutants ◽

First Time ◽

Substrate Types ◽

Density Results

Microbial fuel cells, also known as biological fuel cells, use bacteria to convert biodegradable materials such as wastewater pollutants into electricity. However, limited studies revealed the high bioelectricity generation using a mediator-less MFC. This study isolated an exoelectrogen E. faecium YC 201, inoculated to a mediator-less MFC and obtained a high power density. Results show that the power generation reached a maximum of 121.3 ± 4.2 mW/m2 that was higher than those of other similar MFCs reported in the past literature. Substrate types significantly affected electricity generation and the optimal substrate for electricity generation was glucose. The riboflavin was identified as possible mediator for the mediator-less MFC that was self-excreted by E. faecium YC 201. To our knowledge, this is the first time to clearly reveal the electricity characteristics of exoelectrogen E. faecium YC 210.

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Microbial diversity and population dynamics of activated sludge microbial communities participating in electricity generation in microbial fuel cells

Water Science & Technology ◽

10.2166/wst.2008.577 ◽

2008 ◽

Vol 58 (11) ◽

pp. 2195-2201 ◽

Cited By ~ 16

Author(s):

D. Ki ◽

J. Park ◽

J. Lee ◽

K. Yoo

Keyword(s):

Fuel Cells ◽

Activated Sludge ◽

Microbial Diversity ◽

Microbial Fuel Cells ◽

Electricity Generation ◽

Municipal Wastewater ◽

Treatment Plant ◽

Community Analysis ◽

Electricity Production ◽

Anode Chamber

In this study, we performed microbial community analysis to examine microbial diversity and community structure in microbial fuel cells (MFCs) seeded with activated sludge from a municipal wastewater treatment plant in South Korea. Because anode-attached biofilm populations are particularly important in electricity transfer, the ecological characteristics of anode-attached biofilm microbes were explored and compared with those of microbes grown in suspension in an anode chamber. 16S rDNA-based community analysis showed that the degree of diversity in anode-attached biofilms was greater than that of the originally seeded activated sludge as well as that of the suspension-grown microbes in the anode bottle. In addition, Bacteroidetes and Clostridia grew preferentially during MFC electricity generation. Further phylogenetic analysis revealed that the anode biofilm populations described in this work are phylogenetically distant from previously characterized MFC anode biofilm microbes. These findings suggest that a phylogenetically diverse set of microbes can be involved in the electricity generation of MFC anode compartments, and that increased microbial diversity in anode biofilms may help to stabilize electricity production in the MFC.

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