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Kinetic study of wood pyrolysis in presence of metal halides

100%
Beliy V., Udoratina E.
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issue 12
1294-1303
EN
The purpose of this work was to study the kinetics of wood pyrolysis in the presence of inorganic salts, representatives of classes of alkali and alkaline earth metal halides (NaCl, KCl, KBr, CaCl2, BaCl2·2H2O) and Lewis acids (AlCl3·6H2O, FeCl3·6H2O, CuCl2, CuBr2, ZnCl2·1.5H2O, NiCl2·6H2O, SnCl2·2H2O) using TG-DSC. The activity of these catalysts was estimated by the temperature of the beginning of pyrolysis, charcoal yield and kinetic parameters, such as energy of activation and reaction order. Using the Lewis acids as catalysts for pyrolysis leads to a decrease in the temperature of the process beginning and the activation energy. In the presence of other catalysts activation energy does not significantly change. The increase of a seeming reaction order in the presence of Lewis acids possibly is a consequence of complication of the thermodestruction mechanism, with the appearance of new parallel competing stages.
2
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C&RT model application in classification of biomass for energy production and environmental protection

88%
Sajdak M., Piotrowski O.
Open Chemistry
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2013
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vol. 11
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issue 2
259-270
EN
Biomass is most often used to produce energy via its combustion and co-combustion along with conventional energy carriers. The prevalence of this method results from the lack of sufficient facilities that can provide a quick and simple chemical classification method, which would show a broader range of possible applications of biofuel in the energy industry. The aim of this study was the development of novel method of classification allowing for quick determine of the direction of the biomass usage by applying classification and regression models of trees (C&RTs). The proper functioning of a C&RT model is based on a very large database of results collected by the Institute for Chemical Processing of Coal during years of work in this field. The created model may be used as decision tool for grouping various biomass sources with respect to their further application in energy generation. [...]
3
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Application of chemometrics to identifying solid fuels and their origin

88%
Sajdak M.
Open Chemistry
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2013
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vol. 11
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issue 2
151-159
EN
The aim of this work was to implement a chemometric analysis to detect the relationships between the analysed variables in samples of solid fuels. Efforts are being made to apply chemometrics methods in environmental issues by developing methods for the rapid assessment of solid fuels and their compliance with the required emission characteristics regulations. In the present investigation, two clustering techniques-hierarchical clustering analysis (HCA) and principal components analysis (PCA)-are used to obtain the linkage between solid fuel properties and the type of sample. These analyses allowed us to detect the relationships between the studied parameters of the investigated solid fuels. Furthermore, the usefulness of chemometrics methods for identification of the origin of biofuels is shown. These methods will enable control of the degree of contamination. [...]
4
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Carbonization of biomass – an efficient tool to decrease the emission of CO2

75%
Kobyłecki R., Ścisłowska M., Bis Z.
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5
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Thermocatalytic Conversion of Sugarcane Bagasse (SCB) for Bioethanol Production: A Review

75%
Akinkuade K. A., Olasesan I. P., Fakayode O. A., Odesanmi A. A., Ajibade O. A.
World News of Natural Sciences
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2022
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vol. 45
117-142
EN
An estimated 1.6 billion metric tons of sugarcane are produced worldwide each year, producing 279 million tons in metric of sugarcane bagasse (SCB) [1]. In terms of sugarcane production, Brazil leads the world with an annual output of about 739,300 metric tons, followed by India, China, Thailand, Pakistan, Mexico, Colombia, Indonesia, the Philippines, and the United States [2]. Sugarcane production produces waste and, if neglected, will have a serious negative impact on the environment. Alcohols, furfurals, organic acids, butanol, hydrogen, methane, ethanol, and other value-added products have all seen a major increase in output during the past few years [3], [4], [5]. The sustainable bio economy should be expanded via bio-based methods. An economic transformation from linear to circular will occur if the bio economy is more circular and sustainable. In view of the requirement for energy and environmental sustainability, a great deal of research has been done on the various SCB applications. Due to its successful application in the production of bioethanol, SCB is an acceptable source of sustainable feedstock for biofuel production. The SCB's bio products and enzymes demonstrate their economic value. Due to the higher reserve price than the current market price, the feasibility and industrial scale economics of biodiesel with sugar cane bagasse have revealed adverse net present values.
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