Effects of Concentration Variations on the Performance and Microbial Community in Microbial Fuel Cell Using Swine Wastewater

Ni, Hongjun; Wang, Kaixuan; Lv, Shuaishuai; Wang, Xingxing; Liu, Zhuo; Zhang, Jiaqiao

doi:10.3390/en13092231

Cited by 35 publications

(20 citation statements)

References 23 publications

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“…The detailed cleaning method is to soak PPTA in acetone for 1 h, then boil it with absolute ethanol and distilled water, and then filter the mixture and put it in an oven to dry for later use. The wastewater is treated in a harmless manner [36,37]. The SEM morphology of the PPTA surface is shown in Figure 3a.…”

Section: Surface Treatment Of the Aramid Fibermentioning

confidence: 99%

Microstructure and Properties of Polytetrafluoroethylene Composites Modified by Carbon Materials and Aramid Fibers

Zhang

Zhu

et al. 2020

Coatings

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Polytetrafluoroethylene (PTFE) is polymerized by tetrafluoroethylene, which has high corrosion resistance, self-lubrication and high temperature resistance. However, due to the large expansion coefficient, high temperature will gradually weaken the intermolecular bonding force of PTFE, which will lead to the enhancement of permeation absorption and the limitation of the application range of fluoroplastics. In order to improve the performance of PTFE, the modified polytetrafluoroethylene, filled by carbon materials and aramid fiber with different scales, is prepared through the compression and sintering. Moreover, the mechanical properties and wear resistance of the prepared composite materials are tested. In addition, the influence of different types of filler materials and contents on the properties of PTFE is studied. According to the experiment results, the addition of carbon fibers with different scales reduces the tensile and impact properties of the composite materials, but the elastic modulus and wear resistance are significantly improved. Among them, the wear rate of 7 μm carbon fiber modified PTFE has decreased by 70%, and the elastic modulus has increased by 70%. The addition of aramid fiber filler significantly reduces the tensile and impact properties of the composite, but its elastic modulus and wear resistance are significantly improved. Among them, the wear rate of the modified composite material with 3% alumina particles and 5% aramid pulp decreased by 68%, and the elastic modulus increased by 206%.

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Section: Surface Treatment Of the Aramid Fibermentioning

confidence: 99%

Microstructure and Properties of Polytetrafluoroethylene Composites Modified by Carbon Materials and Aramid Fibers

Zhang

Zhu

et al. 2020

Coatings

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“…The MFC power output peaked at a current density of 3.1 A/m 2 (1.9 W/m 2 ) and tripled the control cell (0.6 W/m 2 ). MFCs have been commonly characterised under a constant load discharge, typically 1000 Ω [4,8,21,25,26]. As such, the current output is around 0.6 mA and deteriorates as the cell voltage decreases, often rapidly.…”

Section: Resultsmentioning

confidence: 99%

Self-Sustaining Bioelectrochemical Cell from Fungal Degradation of Lignin-Rich Agrowaste

et al. 2021

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The present work describes a self-sustaining bioelectrochemical system that adopts simple cell configurations and operates in uncontrolled ambient surroundings. The microbial fuel cell (MFC) was comprised of white-rot fungus of Phanaerochaete chrysosporium fed with oil palm empty fruit bunch (EFB) as the substrate. This fungal strain degrades lignin by producing ligninolytic enzymes such as laccase, which demonstrates a specific affinity for oxygen as its electron acceptor. By simply pairing zinc and the air electrode in a membraneless, single-chamber, 250-mL enclosure, electricity could be harvested. The microbial zinc/air cell is capable of sustaining a 1 mA discharge current continuously for 44 days (i.e., discharge capacity of 1056 mAh). The role of the metabolic activities of P. chrysosporium on EFB towards the MFC’s performance is supported by linear sweep voltammetry measurement and scanning electron microscopy observations. The ability of the MFC to sustain its discharge for a prolonged duration despite the fungal microbes not being attached to the air electrode is attributed to the formation of a network of filamentous hyphae under the submerged culture. Further, gradual lignin decomposition by fungal inocula ensures a continuous supply of laccase enzyme and radical oxidants to the MFC. These factors promote a self-sustaining MFC devoid of any control features.

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“…By enriching microorganism in the anode compartment, the MFC system can ECOTROPHIC • 15(2): 204-212 p-ISSN:1907-5626,e-ISSN: 2503-3395 degrade the complex organic matter and generate electrons and protons at the same time. The protons will pass through the membrane while the electrons will be pumped to the anode and reach the cathode via external circuit (Ni et al 2020;Prathiba et al 2021). Based on Table 1, the COD 0 and COD t of PBM substrate were obtained around 1.060 g/L and 303 g/L, respectively.…”

Section: Cod Removalmentioning

confidence: 99%

Microbial Enrichment Process in the Anode of Microbial Fuel Cell System Using Tofu Wastewater (Tww) Anaerobic Sludge

Satar

Permadi

Latifatunnajib

2021

EJES

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Microbial fuel cell consisting two main components which are anode and cathode materials. In the microbial fuel cell, both anode and cathode compartments are separated with a separator. Anode generates the protons and electrons while cathode converts protons into water with the presence electrons and oxygen. During the Microbial fuel cell operation, the performance of anode is very crucial due to it provides the protons and electrons. Hence, the high efficiency microbial fuel cell is very related with the high anode performance. This work addressed to the enrichment process of electroactive bacteria (EAB) in anode of microbial fuel cell. In this work, some parameters such as current generations, , and pH changes were used to assess the enrichment process of EAB was reached. In addition, the presence of EAB on the anode surface was identified based on the morphology of anode surface. The removal of COD and the pH value were determined by using the American public health analysis method and pH tester, respectively. The morphology of anode surface was analysed by using a scanning electron microscope. Whereas, current generation was tested by using a mustimeter. The removal of COD and final pH were obtained 71.4 % and 5.7, respectively. The optimum current generation was observed 0.19 mA. The surface morphology of anode before enriched with microbes was clear surface, while after enriched with microbes was attached by microbes. The removal of COD, pH changes, current generation and morphology of anode surface could be used to assess the EAB in the anode compartment. Keywords: Microbial fuel cell; anode; cathode; electroactive bacteria; pH changes.

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Effects of Concentration Variations on the Performance and Microbial Community in Microbial Fuel Cell Using Swine Wastewater

Cited by 35 publications

References 23 publications

Microstructure and Properties of Polytetrafluoroethylene Composites Modified by Carbon Materials and Aramid Fibers

Microstructure and Properties of Polytetrafluoroethylene Composites Modified by Carbon Materials and Aramid Fibers

Self-Sustaining Bioelectrochemical Cell from Fungal Degradation of Lignin-Rich Agrowaste

Microbial Enrichment Process in the Anode of Microbial Fuel Cell System Using Tofu Wastewater (Tww) Anaerobic Sludge

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