Comparison of hydrogen production and system performance in a microbial electrolysis cell containing cathodes made of non-platinum catalysts and binders

Son, Sunghoon; Koo, Bonyoung; Chai, Hyungwon; Tran, Huong Viet Hoa; Pandit, Soumya; Kim, Eun Jung

doi:10.1016/j.jwpe.2020.101844

Cited by 85 publications

(28 citation statements)

References 68 publications

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“…전 세계적으로 과도한 화석에너지 소비에 의한 화석연료 고 갈로 인해 새로운 대체 에너지 매체가 매우 필요한 실정이며, 이에 에너지 소비 및 대체에너지 개발의 관심이 증대되고 있 다. [1][2][3]24,25) 화석에너지를 능가하는 새로운 에너지 매체의 불확 실성으로 인해 최근 대체에너지(태양열, 풍력, 조력 등) 개발 이 큰 화두가 되고 있으나, [4][5][6] 이는 초기투자비용이 높고 대형 면적이 요구되며 동시에 자연 훼손의 문제 등 새로운 환경문 제를 발생시키는 단점이 있다. [7][8][9] 이에 따라 에너지관련 기술 은 사용 에너지의 절약 및 누수 에너지 방지에 초점을 둔 연구 개발로 점차 확대되고 있는데, 그 중에서도 특히 상전이 물질 을 응용한 열 저장 시스템은 그 무공해성, 지속가능성, 높은 열 저장 밀도로 에너지 활용에 관해 무한한 가능성을 갖는 것으로 평가된다.…”

Section: 서 론unclassified

Development of Inorganic Impregnated Phase Change Material(PCM) in the Pores of Activated Carbon

Baek¹,

Ghaffari²,

Bae³

et al. 2021

J Korean Soc Environ Eng

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Objectives : Recently, energy-related research has shifted from developing alternative energy to the efficient management technology of the produced energy. As an alternative, research on phase change materials (PCMs) capable of absorbing and releasing heat as an energy medium has been conducted. This study developed a more efficient heat storage medium using activated carbon as a medium for the phase change material. At the same time, we developed a method for efficiently impregnating the phase change material into the activated carbon pores.Methods : The activated carbon used in this experiment was charcoal powder activated carbon (250-350 mesh) and granular activated carbon. The inorganic phase change materials used in the experiment was manganese nitrate hexahydrate. The method for impregnating the phase change material was pressurization method and dilution method. The heat absorption / emission capacity of the developed material was examined within the range of 10℃ to 50℃.Results and Discussion : The Scanning electron microscope (SEM) and Transmission electron microscopy energy-dispersive X-ray spectroscopy (TEM-EDX) analysis showed that the phase change material was filled in the pore of activated carbon. When the phase change material is filled by the pressurized method, the material properties of manganese nitrate hexahydrate are reflected, resulting in absorption and release of heat at each phase change temperature. As a result of experiments for the selection of the optimum solvent in the phase change material filling study using the dilution method, when ethanol was used as the solvent, the heat absorption was clearly observed even after the phase change material was loaded. As a result of selecting the optimal dilution ratio, the ratio of ethanol was determined to be 1:1 as the dilution ratio with the lowest amount of floating activated carbon. The optimal solvent removal method experimental results show that the heat absorption/release section occurred when the ethanol was removed by evaporation at 85℃ temperature.Conclusions : 1) Both the pressurization method and the dilution method are filling methods in which inorganic phase change materials can be immobilized inside activated carbon, and heat absorption and release characteristics are maintained even after loading. 2) The heat absorption release was maintained for ethanol and the optimal dilution ratio was 1:1. 3) In case of the dilute solvent removal method, the heat absorption/release capacity was maintained when the solvent was removed using only the vaporization method.

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Section: 서 론unclassified

Development of Inorganic Impregnated Phase Change Material(PCM) in the Pores of Activated Carbon

Baek¹,

Ghaffari²,

Bae³

et al. 2021

J Korean Soc Environ Eng

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“…Selection of optimal carrier in preparing MIP is very important for the improvement of sensitivity. MXene, discovered and studied extensively in 2011, is a newly emerging transition metal carbide and/or nitride material and has been widely in various fields such as energy conversion and storage, field effect transistors and separation catalysis [24][25][26][27][28] as well as microbial electrochemical systems [29][30][31][32]. The general formula for MXene is M n+1 X n T x (e.g., Ti 3 C 2 T x ), where M denotes early transition metal and X represents carbon or nitrogen, while T x refers surface functional groups (e.g., -OH, -O, -F) [33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Pathogen-Imprinted Polymer Film Integrated probe/Ti3C2Tx MXenes Electrochemical Sensor for Highly Sensitive Determination of Listeria Monocytogenes

Jiang

Ding

et al. 2022

J. Electrochem. Sci. Technol

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As one of the most hazardous and deadliest pathogens, Listeria monocytogenes (LM) posed various serious diseases to the human being, thus designing effective strategy for its detection is of great significance. In this work, by preparing Ti 3 C 2 T x MXenes nanoribbon (Ti 3 C 2 T x R) as carrier and selecting thionine (Th) acted simultaneously as signal probe and functional monomer, a LM pathogen-imprinted polymers (PIP) integrated probe electrochemical sensor was design to monitor LM for the first time, that was carried out through the electropolymerization of Th on the Ti 3 C 2 T x R/GCE surface in the existence of LM. Upon eluting the templates from the LM imprinted cavities, the fabricated PIP/Ti 3 C 2 T x R/GCE sensor can rebound LM cells effectively. By recording the peak current of Th as the response signal, it can be weakened when LM cell was re-bound to the LM imprinted cavity on PIP/Ti 3 C 2 T x R/GCE, and the absolute values of peak current change increase with the increasement of LM concentrations. After optimizing three key parameters, a considerable low analytical limit (2 CFU mL -1 ) and wide linearity (10-10 8 CFU mL -1 ) for LM were achieved. In addition, the experiments demonstrated that the PIP/Ti 3 C 2 T x R sensor offers satisfactory selectivity, reproducibility and stability.

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“…The treatment methods of oily sludge include incineration, solvent extraction, biological treatment technology, etc . For energy-positive waste treatment, novel microbial electrochemical systems are developed such as microbial fuel cells (MFCs), microbial electrolysis cells (MEC), microbial desalination cells (MDCs), microbial reverse electrodialysis cells (MRCs), etc. − …”

Section: Introductionmentioning

confidence: 99%

Effect of the Anode Structure on the Performance of Oily Sludge Sediment Microbial Fuel Cells

Guo

Huang

et al. 2022

ACS Omega

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The anode is considered to be a key factor to improve the single-chamber bioelectrochemical system’s efficiency to degrade oily sludge in sediment while generating electricity. There are few studies on the effect of the anode structure on the performance of oily sludge MFCs systematically. In this paper, an oily sludge bioelectrical system was constructed using carbon felt and carbon plate as anode materials, adjusting the anode material arrangement as transverse and longitudinal, and using different anode materials from single to sextuple anodes. The results of this study showed that the rate of degradation of oily sludge was greater with carbon felt (17.04%) than with the carbon plate (13.11%), with transverse (23.61%) than with the longitudinal (19.82%) arrangement of anodes, and with sextuple anodes (33.72%) than with a single anode (25.26%) in the sediment microbial fuel cells (SMFCs). A similar trend was observed when the voltage, power density, and electromotive force (EMF) of SMFCs were estimated between the carbon felt and carbon plate, transverse and longitudinal arrangements, single and sextuple anodes. It is concluded that the proper adjustment of anode arrangements, using carbon felt as an anode material, and increasing the number of anodes to six may accelerate the rate of degradation of oily sludge in oily sludge sediment microbial fuel cells (SMFCs). Furthermore, the electricity generation performance was also improved.

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Comparison of hydrogen production and system performance in a microbial electrolysis cell containing cathodes made of non-platinum catalysts and binders

Cited by 85 publications

References 68 publications

Development of Inorganic Impregnated Phase Change Material(PCM) in the Pores of Activated Carbon

Development of Inorganic Impregnated Phase Change Material(PCM) in the Pores of Activated Carbon

Pathogen-Imprinted Polymer Film Integrated probe/Ti3C2Tx MXenes Electrochemical Sensor for Highly Sensitive Determination of Listeria Monocytogenes

Effect of the Anode Structure on the Performance of Oily Sludge Sediment Microbial Fuel Cells

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