Iron and carbon granules added to anode enhanced the sludge decrement and electrical performance of sludge microbial fuel cell

Cai, Ling; Zhang, Hanmin; Feng, Yujie; Dong, Bin; Wang, Yuezhu; Ge, Chengcheng

doi:10.1016/j.cej.2019.04.164

Cited by 20 publications

(6 citation statements)

References 51 publications

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“…In previous research, P max based on the projected area in SMFCs with carbon fiber as an anode was 17.3 mW/m 2 . Furthermore, the addition of organic matter, such as Chitin 80 (51 mW/m 2 ) and rhizodeposits (33 mW/m 2 ), and bentonite-Fe (29.9 mW/m 2 ) or iron–carbon particles (37.2 mW/m 2 ) can enhance the output power. Low mass transfer in the anode region restricted the SMFC power production.…”

Section: Resultsmentioning

confidence: 99%

Effect of 3D Carbon Electrodes with Different Pores on Solid-Phase Microbial Fuel Cell

et al. 2020

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Solid-phase microbial fuel cells (SMFCs) are promising clean energy that can convert soil/sediment organic matter into usable electricity. However, the practical application of SMFCs require to increase output power, improve energy conversion efficiency, and reduce electrode material costs. In this study, three porous biomass materials, namely, corn stems (CSs), commercial bread (CB), and loofah sponges (LSs), were studied to construct three-dimensional (3D) electrode materials with different pores for improving the performance of SMFCs through a simple carbonization process. The material structure properties of the 3D electrode were evaluated by scanning electron microscopy, X-ray photon spectroscopy, impedance, and cyclic voltammetry. Results showed that CS had the highest effective electrochemical specific surface area and the lowest charge-transfer resistance. The power densities of SMFCs with CSs, CB, and LSs were 66, 47, and 16 mW/m 2 , respectively, while the power density of SMFCs with carbon felt was only 13 mW/m 2 . The pore sizes of CSs were smaller than that of another 3D electrode, which was conducive to improving the electron-transfer rate for increasing the substrate mass transfer rate and biocompatibility in SMFCs. CSs were also an excellent and cost-effective material for establishing 3D electrodes to improve the performance of SMFCs.

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Section: Resultsmentioning

confidence: 99%

Effect of 3D Carbon Electrodes with Different Pores on Solid-Phase Microbial Fuel Cell

et al. 2020

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“…The preparation technology of iron-carbon (Fe-C) substrates has also evolved greatly. In previous studies, iron-carbon micro-electrolytic substrates were mainly synthesized by physically mixing or sintering iron and carbon as raw materials [18]. In 2014, Zhou et al used active iron-carbon micro-electrolysis systems to remove organic phosphates from discharged circulating cooling waters [19]; Shi et al prepared an iron oxide/activated carbon composite adsorbent (activated carbon loaded with iron oxide) that can effectively treat phosphate-contaminated water [20]; Chen et al synthesized an iron-carbon (Fe-C) micro-electrolysis material substrate through a carbothermal reduction process using flotation waste copper slag as a carbon source and anthracite as a carbon source [21].…”

Section: Introductionmentioning

confidence: 99%

Preparation of a New Iron-Carbon-Loaded Constructed Wetland Substrate and Enhanced Phosphorus Removal Performance

2020

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Iron-carbon substrates have attracted extensive attention in water treatment due to their excellent processing ability. The traditional iron-carbon substrate suffers from poor removal effects, separation of the cathode and anode, hardening, secondary pollution, etc. In this study, a new type of iron-carbon-loaded substrate (NICLS) was developed to solve the problems of traditional micro-electrolytic substrates. Through experimental research, a preparation method for the NICLS with Fe and C as the core, zeolite as the skeleton, and water-based polyurethane as the binder was proposed. The performance of the NICLS in phosphorus-containing wastewater was analyzed. The results are as follows: The optimal synthesis conditions of the NICLS are 1 g hydroxycellulose, wood activated carbon as the cathode, an activated carbon particle size of 200-60 mesh, and an Fe/C ratio of 1:1. Acidic conditions can promote the degradation of phosphorus by the NICLS. Through the characterization of the NICLS (scanning electron microscope (SEM), X-ray diffractometer (XRD), and energy-dispersive spectrometer (EDS), etc.), it is concluded that the mechanism of the NICLS phosphorus removal is a chemical reaction produced by micro-electrolysis. Using the NICLS to treat phosphorus-containing wastewater has the advantages of high efficiency and durability. Therefore, it can be considered that the NICLS is a promising material to remove phosphorus.

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“…The experimental results showed that the electro-oil-induced acclimated Ochrobactrum intermedium K1 promoted the electrical performance of SMFC, and the electrochemical activity of Ochrobactrum intermedium K1 was improved after acclimation. The oil removal performance of SMFC is positively correlated with the electricity production performance, and Ochrobactrum intermedia was widely used in petroleum hydrocarbon degradation [41,42]. Figure 8 shows the change in the oil content before and after SMFC treatment of oily sludge in the control group, experimental group 1, and experimental group 2.…”

Section: Analysis Of the Effect Of Strain K1 On Smfcmentioning

confidence: 99%

Effect of Electro-Oil Acclimation of an Indigenous Strain on the Performance of Sediment Microbial Fuel Cells (SMFC)

et al. 2023

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Sediment microbial fuel cell (SMFC) is a type of MFC without a proton exchange membrane. However, SMFC have had problems with low-power production performance. In this paper, the effects of native bacteria (K1) in oily sludge and their electro-oil-induced domestication on the power generation and oil removal performance of SMFC were studied. The results showed that K1 belonged to Ochrobactrum intermedium. During the domestication process, an upward trend was shown in the OD600 and ORP values in the culture medium, and it grown best at 0.7 V. Ochrobactrum intermedium K1 significantly increased the average output voltage, electromotive force, and maximum power density of SMFC and reduced the apparent internal resistance of the battery. The maximum power density was 169.43 mW/m3, which was 8.59 times higher than that of the control group. Ochrobactrum intermedium K1 improved the degradation of crude oil by SMFC. Ochrobactrum intermedium K1 enhanced the degradation of high-carbon alkanes and even-carbon alkanes in n-alkanes. Cyclic voltammetry and chronoamperometry tests showed that after acclimation, Ochrobactrum intermedium K1 improved the extracellular electron transfer efficiency (EET) mediated by c-Cyts and flavin by increasing the surface protein redox potential.

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Iron and carbon granules added to anode enhanced the sludge decrement and electrical performance of sludge microbial fuel cell

Cited by 20 publications

References 51 publications

Effect of 3D Carbon Electrodes with Different Pores on Solid-Phase Microbial Fuel Cell

Effect of 3D Carbon Electrodes with Different Pores on Solid-Phase Microbial Fuel Cell

Preparation of a New Iron-Carbon-Loaded Constructed Wetland Substrate and Enhanced Phosphorus Removal Performance

Effect of Electro-Oil Acclimation of an Indigenous Strain on the Performance of Sediment Microbial Fuel Cells (SMFC)

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