Clean energy from a carbon fuel cell

Kacprzak, Andrzej; Kobyłecki, Rafał; Bis, Zbigniew

doi:10.2478/v10173-011-0019-z

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…Processes of autothermic pyrolysis were performed in the reactor under pressure and flow conditions that would ensure the maximum rate of heating of the fragmented biomass. More details of the biochar preparation are given elsewhere [57][58][59][60][61]. Pyrolysis products were air-dried, crushed and sieved through a 2-mm mesh.…”

Section: Biochar Productionmentioning

confidence: 99%

Comparison of Monovalent and Divalent Ions Removal from Aqueous Solutions Using Agricultural Waste Biochars Prepared at Different Temperatures—Experimental and Model Study

Tomczyk

Sokołowska

Boguta

et al. 2020

IJMS

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Copper (Cu) and silver (Ag) occur naturally in the environment but have toxic effects on organisms at elevated concentrations. This paper discussed the removal of Cu and Ag from aqueous solutions using biochars obtained at different pyrolysis temperatures. Three biomass sources—sunflower husks (SH), a mixture of sunflower husks and rapeseed pomace (SR) and wood waste (WW)—were pyrolyzed at 300, 400 and 500 °C. Biochars produced at 500 °C exhibited a higher specific surface area, lower variable surface charge and lower contents of surface functional groups than those obtained at 400 or 300 °C. The pseudo-second-order model and intra-particle diffusion (IPD) model well-described the Cu and Ag adsorption kinetics. The Cu adsorption was about 1.48 times slower than the Ag adsorption on the biochars obtained at 500 °C. The model of Langmuir-Freundlich well-described the equilibrium adsorption. Agricultural biochars obtained at >500 °C had a surface with a higher affinity to attract Ag than Cu and were able to remove a larger amount of heavy metals from aqueous media than those prepared at lower pyrolysis temperatures.

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Section: Biochar Productionmentioning

confidence: 99%

Comparison of Monovalent and Divalent Ions Removal from Aqueous Solutions Using Agricultural Waste Biochars Prepared at Different Temperatures—Experimental and Model Study

Tomczyk

Sokołowska

Boguta

et al. 2020

IJMS

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“…Direct methanation: C þ 2H 2 / CH 4 (11) This reaction occurrence may explain the difference in the rate rise between H 2 and CO (Fig. 4a) as a function of temperature.…”

Section: Olive Wood Charcoal (Ow-c)mentioning

confidence: 96%

Investigation of chemical and electrochemical reactions mechanisms in a direct carbon fuel cell using olive wood charcoal as sustainable fuel

Elleuch

Halouani

2015

Journal of Power Sources

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“…The biochars were high in carbon content (68.8-72.0 wt%), indicating the pre-treatment step made the fuels more carbonaceous. This property makes the biochars a better reactive fuel in the DCFC system as carbon is the main substrate for electrochemical reactions in the DCFC [30,31]. Higher content of fixed carbon also corresponds to more chemical energy, i.e.…”

Section: Proximate Analysismentioning

confidence: 99%

Power generation from palm kernel shell biochar in a direct carbon fuel cell

et al. 2020

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The diminishing fossil fuel reserves and energy shortage are serious challenges that have directed the search for alternative fuel sources for energy generation in the twenty-first century. Biomass-based carbon materials are alternative and renewable fuel sources used for contemporary energy conversion and present a promising solution to the above crisis. This study investigates the possibility of power generation from oil palm kernel shell (PKS) biochar through direct carbon fuel cell (DCFC) technology. The objective of the study is to investigate the potential of PKS biochar as a fuel source and consolidate information on the association between the structure of PKS biochar and its electrochemical performance in a DCFC. The effect of acid pre-treatment on the structure of biochar is also investigated. The samples are characterized on the basis of chemical composition (proximate/ultimate analysis) and DCFC performance in terms of open circuit voltage, power densities and electrochemical impedance spectroscopy. The results indicated that carbon, ash and oxygen functional groups on the carbon surface have a major impact on the fuel performance in the DCFC. At DCFC operating temperature of 850 °C, the pre-treated PKS biochar exhibits a maximum power density of 3.3 mW cm −2 which exceeds that of untreated PKS biochar and activated carbon. Besides high carbon and reduced ash in the biochar, the results suggest that the existence of oxygen functional groups in the pre-treated PKS biochar also plays a crucial role in cell performance by providing additional active sites for electrochemical reaction.

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Clean energy from a carbon fuel cell

Cited by 8 publications

References 6 publications

Comparison of Monovalent and Divalent Ions Removal from Aqueous Solutions Using Agricultural Waste Biochars Prepared at Different Temperatures—Experimental and Model Study

Comparison of Monovalent and Divalent Ions Removal from Aqueous Solutions Using Agricultural Waste Biochars Prepared at Different Temperatures—Experimental and Model Study

Investigation of chemical and electrochemical reactions mechanisms in a direct carbon fuel cell using olive wood charcoal as sustainable fuel

Power generation from palm kernel shell biochar in a direct carbon fuel cell

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