A review of biocathodes and enrichment strategies of electrochemically active bacteria for enhanced bioelectricity generation in microbial fuel cells

Ortega-Martínez, Areli; Vázquez-Larios, A.L.; Juárez-López, Katy; Solorza‐Feria, O.; Poggi‐Varaldo, Héctor M.

doi:10.1016/j.jbiotec.2010.08.376

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“…The reason might be relative to the previously research. It has been pointed out that the high porosity of brush cathode can effectively avoid the potential for clogging, provide a dramatically higher surface area for biofilm development and harbor a significantly higher fraction of known exoelectrogens in the established biofilm community (Ortega-Martínez et al, 2010). In this study, carbon brush might be benefit to the microbial enrichment for 4-CP dechlorination, as well as the metal with good conductivity could facilitate the electron transfer at cathode, leading to the better 4-CP dechlorination in BES with composite biocathode materials of carbon and metal.…”

Section: Improved Dechlorination Performance In Biocathode Bes Using mentioning

confidence: 99%

Improved 4-chlorophenol dechlorination at biocathode in bioelectrochemical system using optimized modular cathode design with composite stainless steel and carbon-based materials

Kong

Wang

Ren

2014

Bioresource Technology

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h i g h l i g h t sA modular biocathode materials design was developed and optimized in BES. Dechlorination was improved using this composite metal and carbon-based material. SSB/GG/CB was optimum for dechlorination, followed by SSB/CB and SSB/GG. EIS analysis showed that the composite materials could improve the charge transfer. This modular design could be scalable with successive modules for BES scale-up. t r a c tThis study developed and optimized a modular biocathode materials design in bioelectrochemical system (BES) using composite metal and carbon-based materials. The 4-chlorophenol (4-CP) dechlorination could be improved with such composite materials. Results showed that stainless steel basket (SSB) filled with graphite granules (GG) and carbon brush (CB) (SSB/GG/CB) was optimum for dechlorination, followed by SSB/CB and SSB/GG, with rate constant k of 0.0418 ± 0.0002, 0.0374 ± 0.0004, and 0.0239 ± 0.0002 h À1 , respectively. Electrochemical impedance spectroscopy (EIS) demonstrated that the composite materials with metal can benefit the electron transfer and decrease the charge transfer resistance to be 80.4 X in BES-SSB/GG/CB, much lower than that in BES-SSB (1674.3 X), BES-GG (387.3 X), and BES-CB (193.8 X). This modular cathode design would be scalable with successive modules for BES scaleup, and may offer useful information to guide the selection and design of BES materials towards dechlorination improvement in wastewater treatment.

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Section: Improved Dechlorination Performance In Biocathode Bes Using mentioning

confidence: 99%

Improved 4-chlorophenol dechlorination at biocathode in bioelectrochemical system using optimized modular cathode design with composite stainless steel and carbon-based materials

Kong

Wang

Ren

2014

Bioresource Technology

View full text Add to dashboard Cite

show abstract

A review of biocathodes and enrichment strategies of electrochemically active bacteria for enhanced bioelectricity generation in microbial fuel cells

Cited by 1 publication

References 1 publication

Improved 4-chlorophenol dechlorination at biocathode in bioelectrochemical system using optimized modular cathode design with composite stainless steel and carbon-based materials

Improved 4-chlorophenol dechlorination at biocathode in bioelectrochemical system using optimized modular cathode design with composite stainless steel and carbon-based materials

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