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    Experimental investigation of 11x11 cm(2) membrane microbial fuel cell performance
    (ELSEVIER, 2019) Hayder, Mustafa Akram Hayder.; Dincer, Kevser.
    Microbial fuel cells (MFC's) are systems that can convert chemical energy into electricity directly from biochemically commutable substances (organic substances) by using microorganisms as a catalyst in an oxygen-free environment. Electrode-growing microorganisms in the anode chamber converts water organics into hydrogen ions and electrons. In this study, performance of 11x11 cm(2) membrane microbial fuel cell have been experimentally investigated. In the experimental studies, activated sludge sample have been used. In this study, current density (= I/V), power density (= P / V) values have been calculated by measuring current (I) and voltage (V) values. The performance of 11x11 cm(2) Nafion 117 membrane activated sludge microbial fuel cell (#ASMFC) have been determined. The maximum values of voltage, current density and power density values from the (#ASMFC) are represented subsequently (0.616 V, 0.463 A/m(3) and 75.64 W/m(3)). (C) 2019 Elsevier Ltd. All rights reserved.
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    Investigation of electrical conductivity of PAN nanofibers containing silica nanoparticles produced by electrospinning method
    (ELSEVIER, 2019) Mpukuta, Olivier Mukongo.; Dincer, Kevser.; Erdal, Mehmet Okan.
    This paper sheds new light on how an amount of silica nanoparticles (1, 3 and 5 wt. %) acts on the morphology, the hydrophobicity and on the electrical conductivity of polyacrylonitrile (PAN) nanofibers. In this study, electrospinning technique was used to fabricate nanofibers composites consisting of PAN, dimethylformamide (DMF) and silica at two different applied voltages (15 kV and 20 kV). The scanning electron microscopy (SEM), X-ray diffraction technique (XRD), contact angle technique and the four-point probe technique were respectively used to investigate the morphology and diameter range, the crystalline structure, the hydrophobicity and the electrical conductivity of the obtained nanofibers. At the end, different results of the investigation were compared each other and discussed. (C) 2019 Elsevier Ltd. All rights reserved.