Effect of NaX zeolite-modified graphite felts on hexavalent chromium removal in biocathode microbial fuel cells

Wu, Xuezhong; Tong, Fei; Yong, Xiaoyu; Zhou, Jun; Zhang, Lixiong; Jia, Honghua; Wei, Ping

doi:10.1016/j.jhazmat.2016.01.070

Cited by 53 publications

(40 citation statements)

References 41 publications

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“…This new method has increased Cr(VI) reduction efficiency by 2.9 times compared to common biocathots (Wu et al, 2015). Other recent studies on Cr(VI) reduction were focused on self-assembled graphene biocathode applications (Song et al, 2016) and on electrode material modification (Wu X. et al, 2016). Current studies are usually focused on the cathode material for chromium removal.…”

Section: Alternative Electron Acceptorsmentioning

confidence: 99%

An Overview of Electron Acceptors in Microbial Fuel Cells

2017

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Microbial fuel cells (MFC) have recently received increasing attention due to their promising potential in sustainable wastewater treatment and contaminant removal. In general, contaminants can be removed either as an electron donor via microbial catalyzed oxidization at the anode or removed at the cathode as electron acceptors through reduction. Some contaminants can also function as electron mediators at the anode or cathode. While previous studies have done a thorough assessment of electron donors, cathodic electron acceptors and mediators have not been as well described. Oxygen is widely used as an electron acceptor due to its high oxidation potential and ready availability. Recent studies, however, have begun to assess the use of different electron acceptors because of the (1) diversity of redox potential, (2) needs of alternative and more efficient cathode reaction, and (3) expanding of MFC based technologies in different areas. The aim of this review was to evaluate the performance and applicability of various electron acceptors and mediators used in MFCs. This review also evaluated the corresponding performance, advantages and disadvantages, and future potential applications of select electron acceptors (e.g., nitrate, iron, copper, perchlorate) and mediators.

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Section: Alternative Electron Acceptorsmentioning

confidence: 99%

An Overview of Electron Acceptors in Microbial Fuel Cells

2017

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“…62 HNO 3 -pretreated and NaX zeolite-modified graphite felt proved to be an excellent biocathode material, with electricity generation and Cr(VI) removal 1.7 and 8.2 times higher respectively than those of the unmodified control. 56 Similarly, biocathodes modified using graphene removed 100% of Cr(VI) in 48 h and increased the power density 5.7-fold compared with the unmodified control. 13 These modified electrodes provided adsorption sites for Cr(VI) and improved the electrical conductivity as well as the electron transfer rate in the MFC.…”

Section: Mfcs With Biocathodesmentioning

confidence: 98%

“…Modification of carbon‐based electrodes by physical or chemical methods and addition of a surface coating enhance their conductivity, electron transfer and biofilm adhesion . HNO 3 ‐pretreated and NaX zeolite‐modified graphite felt proved to be an excellent biocathode material, with electricity generation and Cr(VI) removal 1.7 and 8.2 times higher respectively than those of the unmodified control . Similarly, biocathodes modified using graphene removed 100% of Cr(VI) in 48 h and increased the power density 5.7‐fold compared with the unmodified control .…”

Section: Mfcs With Biocathodesmentioning

confidence: 99%

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Aarthy

Rajesh

Thirunavoukkarasu

2019

J of Chemical Tech & Biotech

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Rapid urbanization and industrialization has led to the indiscriminate discharge of heavy metals into the environment. Hexavalent chromium (Cr(VI)), a lethal, carcinogenic and genotoxic heavy metal frequently found in industrial effluent, poses a serious threat to human health. On the other hand, there is a global energy crisis prevalent owing to the scarcity of resources and huge energy demand. An emerging innovative technology which utilizes the biocatalytic activity of microbes for electron production and offers a dual solution for simultaneous reduction of Cr(VI) and generation of bioelectricity is the microbial fuel cell (MFC). The success of the MFC depends on variables such as cell configuration, pH, electrode materials, effect of microbial communities and operational conditions. This review provides a critical insight on the developments in the field of MFCs with abiotic and biotic cathodes, integrated systems, plant‐ and soil‐based designs for treatment of Cr(VI)‐laden effluent and sustainable energy recovery. © 2019 Society of Chemical Industry

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“…The performance of the biocathode is dependent on the biomass concentration, surface characteristics and surface area availability. The large surface area bearing 3D configurations make them superior for biocathode construction . However, usage of these cathodes is restricted by the high cost incorporated as they require continuous dissolved oxygen supply ,…”

Section: Structural Components Limitationsmentioning

confidence: 99%

Perspective View on Materialistic, Mechanistic and Operating Challenges of Microbial Fuel Cell on Commercialisation and Their Way Ahead

Mukherjee

Saravanan

2019

ChemistrySelect

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Microbial fuel cell technology that works on the principle of resource recovery has gained wide popularity among the scientific world. These MFCs were seen as a solution provider for the present day's energy crisis through a non-traditional sustainable way. Although immense research has marked the development of this system since its innovation, the technol-ogy has not competed the commercial implication owing to various associated materialistic and operating limitations. The perspective provides an overview of the various limitations faced that constraints its real-time application along with perspective solutions.

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Effect of NaX zeolite-modified graphite felts on hexavalent chromium removal in biocathode microbial fuel cells

Cited by 53 publications

References 41 publications

An Overview of Electron Acceptors in Microbial Fuel Cells

An Overview of Electron Acceptors in Microbial Fuel Cells

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Perspective View on Materialistic, Mechanistic and Operating Challenges of Microbial Fuel Cell on Commercialisation and Their Way Ahead

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