Development and rheological characterisation of an industrial liquid fuel consisting of charcoal dispersed in water

Loureiro, Liliana R.; Gil, P.B.F.; Campos, F.V. Vieira de; Nunes, Leonel J. R.; Ferreira, J.M.F.

doi:10.1016/j.joei.2017.04.005

Cited by 8 publications

(4 citation statements)

References 33 publications

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“…Sodium, potassium, iron, copper, magnesium and chromium were analysed using a UV/VIS Shimadzu UV 1700spectrophotometer at 540 nm (16). On the other hand ashes were determined by Term-gravimetric, placing the biomass to be heated in a tared crucible at 550°C for one hour in an oven Model IFA-54-8 Mark Escode (400-600°C), allowing to cool in a desiccator to room temperature and weighing the mass of the crucible in a scale analytics (17).…”

Section: Impregnated Biomass and Carbons Characterizationmentioning

confidence: 99%

Caracterización de carbón activado sintetizado a baja temperatura a partir de cáscara de cacao (Theobroma cacao) para la adsorción de amoxicilina

et al. 2017

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The aim of this research was synthesize and characterize activated carbon obtained at low temperature from cocoa peel (Theobroma cacao), modified with zinc chloride (ZnCl 2 ) for its subsequent use in the removal of amoxicillin. The biomass was characterized by elemental analysis and the activated carbon was characterized by Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), and Surface Area Analysis (BET) in order to determine the chemical composition, morphological and structural characteristics. For the assays of amoxicillin molecular adsorption, was used an aqueous solution of contaminant at 20 ppm, with pH 6 and 9, to which was added 5 g of adsorbent material impregnated with ZnCl2 at 1:3 and 1:4 ratios. These carbons reached surface areas of 287.5 m 2 /g and 205.4 m 2 /g, respectively, with average pore sizes from 3 to 4 nm. The percentage of amoxicillin removal was influenced by the pH of the solution to be treated, reaching the highest percentages of adsorption when the pH was acid; removal values achieved for activated carbon 1:3 were 75.4 % and 67.2 %, while for the activated carbon 1:4 were 65.2 % and 56.7 % for solutions at pH 6 and 9, correspondingly. It concludes that the activated carbon obtained at low temperature has potential to remove amoxicillin in aqueous solution and becomes a good alternative due to the availability of the residue. Keywords: Activated carbon, adsorption, bio-char, emerging contaminants, low temperature. ResumenEl objetivo de la presente investigación fue sintetizar y caracterizar carbón activado obtenido a baja temperatura a partir de la cascara de cacao (Theobroma cacao), la cual se modificó con cloruro de zinc (ZnCl 2 ) para su uso en la remoción de amoxicilina. La biomasa fue caracterizada mediante análisis elemental y el carbón activado mediante microscopia electrónica de barrido (SEM), difracción de rayos X (DRX) y análisis de área superficial (BET) con el fin de determinar la composición química, las características morfológicas y estructurales. En los ensayos de adsorción molecular de amoxicilina se utilizó una solución acuosa con una concentración de 20ppm del contaminante a pH 6 y 9, a la cual se le agregó 5g del material adsorbente impregnado con Cloruro de zinc a relaciones 1:3 y 1:4. Para los carbones activados 1:3 y 1:4 se alcanzaron áreas superficiales de 287,5 m 2 /g y 205,4 m 2 /g respectivamente, con tamaños de poro promedio de 3 a 4 nm. El porcentaje de remoción de amoxicilina se vio influenciado por el pH de la solución a tratar, alcanzándose los mayores porcentajes a pH ácidos, los valores de remoción alcanzado para el carbón activado 1:3 fueron de 75,4% y 67,2%, mientras que para el carbón activado 1:4 fueron 65,2% y 56,7% para las soluciones pH 6 y 9, respectivamente. Se concluye que el carbón activado obtenido a baja temperatura es un buen material para remover amoxicilina en solución.Palabras clave: Adsorción, baja temperatura, bio-carbón, carbón activado, contaminantes emergentes.

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Section: Impregnated Biomass and Carbons Characterizationmentioning

confidence: 99%

Caracterización de carbón activado sintetizado a baja temperatura a partir de cáscara de cacao (Theobroma cacao) para la adsorción de amoxicilina

et al. 2017

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“…More recently, a study presented by Singh et al (2020) computationally analyzed the disposal of CWS with high solid concentrations through a pipeline, demonstrating the interest of the subject in this transition to a coal-free energy production [59]. It is in this context that several research works have evolved, such as those presented by Loureiro et al (2018), where the development and rheological characterization of an industrial liquid fuel consisting of charcoal dispersed in water was presented, demonstrating a new path for this research field of searching for alternatives to the use of coal [60].…”

Section: Das Et Al (2009) Prepared a Highly Concentrated Cws Using Tmentioning

confidence: 99%

Potential of Coal–Water Slurries as an Alternative Fuel Source during the Transition Period for the Decarbonization of Energy Production: A Review

Nunes

2020

Applied Sciences

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Coal–water slurry or coal–water mixture (CWS or CWM) is a complex solid–liquid dispersion. Several research works have been done concerning the production and use of CWSs being developed worldwide in several different governmental, industrial and academic facilities. In the present paper, studies on the developments achieved in the past three decades with regard to the field mentioned above are systematically reviewed, with particular regard to several different aspects during the combustion process. The structure and properties of the coal are highlighted, as are the different additives used and their adaptability with different types of coal, where the particle size distributions are of great importance in determining both the slurryability of coal and the rheological behavior of a produced CWS for its intended characteristics. At a time when there is much debate about the end of the age of coal as a primary source of thermal and electrical energy, alternative forms of use that can contribute to the reduction of pollutant emissions, as well as particles, in the atmosphere offer alternatives that may allow us to continue using coal, at least during this transition period until a viable alternative is found. In-depth knowledge of these coal slurries may allow, in the future, the development of similar products produced from fuels derived from biomass, such as charcoal or torrefied biomass.

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“…В останні роки особливу увагу дослідників привертає можливість отримання енергії завдяки спалюванню різних суспензій на основі вугілля: деревного або кам'яного. Спалювання таких водовугільних сумішей має низку переваг порівняно з класичними видами палив: скорочення викидів шкідливих речовин в атмосферу, диверсифікованість видів палив, економічна й енергетична вигода [1]. Дослідження водовугільних технологій, а також підвищення ефективності транспортування й спалювання водовугільного палива є актуальною проблемою, якою займаються дослідники в багатьох країнах: США, Канаді, Росії, Китаї, Україні, Польщі, Швеції, Німеччині та ін.…”

Section: вступunclassified

“…+38-057-707-37-30, e-mail: asrogovoy@ukr.net. Нескорожений Артем Олегович1 , аспірант кафедри теоретичної механіки та гідравліки, тел. +38-057-713-61-62, e-mail: nao@m-impex.com.ua.…”

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Flow fields of a non-Newtonian fluid in vortex chamber pumps

Rogovyi¹,

Neskorozhenyi²

2021

Bulletin of KhNAHU

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Problem. Pumping different fluids by hydraulic transport is associated with fast wear of the pump contact surfaces. The fluids being pumped are often non-Newtonian. The use of jet pumps for pumping is impractical due to low efficiency. Vortex chamber pumps may have higher efficiency when pumping non-Newtonian fluids, however, their operation on such fluids has not yet been studied. The aim of this work is to study the characteristics of the flow fields of a non-Newtonian fluid using the example of a Bingham fluid in the vortex chamber pump. Methodology. Predicting pump energy performance and determining flow fields for highly viscous fluids using CFD simulations enables advanced jet pumps to handle non-Newtonian fluids. Results. Modeling was carried out based on the numerical solution of the RANS equations with the SST turbulence model. To ensure the operability of the vortex chamber pump when pumping non-Newtonian fluid, with known rheological parameters of the mixture, it is necessary to select the required supply pressure for the active flow, and also to consider the issue of diluting the liquid with water to reduce the mixture viscosity and achieve the specified values of the pumping energy parameters. Originality. The hypothesis that the vortex chamber supercharger can operate on a hypothetical ideal fluid has been confirmed. In this case, the performance indicators of such a supercharger improve and tend to ideal. With an increase in plastic viscosity, the volumetric flow rate of the pumped fluid decreases, and at high values of the viscosity, an active flow is ejected through the axial channels. Practical value. Researchers can use the theoretical results of this work to design new devices for pumping other Bingham fluids, such as oil paint, resins, varnishes, swamp soils, and many others.

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Development and rheological characterisation of an industrial liquid fuel consisting of charcoal dispersed in water

Cited by 8 publications

References 33 publications

Caracterización de carbón activado sintetizado a baja temperatura a partir de cáscara de cacao (Theobroma cacao) para la adsorción de amoxicilina

Caracterización de carbón activado sintetizado a baja temperatura a partir de cáscara de cacao (Theobroma cacao) para la adsorción de amoxicilina

Potential of Coal–Water Slurries as an Alternative Fuel Source during the Transition Period for the Decarbonization of Energy Production: A Review

Flow fields of a non-Newtonian fluid in vortex chamber pumps

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