Utilization of petroleum residues under microwave irradiation

Цодиков, М. В.; Konstantinov, G. I.; Chistyakov, A. V.; Арапова, О. В.; Perederii, M. A.

doi:10.1016/j.cej.2016.02.028

Cited by 27 publications

(8 citation statements)

References 11 publications

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“…Modification of kraft lignin with iron at MWI leads to a decrease in the yield of the fraction of liquid hydrocarbons to 3% and an increase in the yield of gaseous products (Tables 1 and 2). e yields of liquid and gaseous products obtained during the destruction of iron-modified kraft lignin in argon and carbon dioxide are identical, which indicates a high intensity of the process when plasma is initiated directly in the kraft lignin body as well as it was observed earlier [18]. However, as compared with argon in carbon dioxide, an increase in the selectivity of the formation of synthesis gas from 64 to 72% and a proportional decrease in the selectivity of the formation of light hydrocarbons are observed.…”

Section: Resultssupporting

confidence: 72%

Kraft Lignin Conversion into Energy Carriers under the Action of Electromagnetic Radiation

Zharova

Арапова

Konstantinov

et al. 2019

Journal of Chemistry

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In this work, it was found that the deposition of iron salts (iron acetate) on kraft lignin at extremely low concentrations of 0.1 wt.% leads to a sharp increase in the absorbing capacity of microwave radiation by kraft lignin at its power of 1 kW and the conversion of kraft lignin to a hydrogen-containing gas with the degree of hydrogen extraction, reaching 90% based on the hydrogen contained in the kraft lignin. It has been established that the deposition of metals (Fe and Ni) on kraft lignin allows one to directionally change the selectivity of the process of its destruction under the influence of microwave radiation, which makes it possible to classify the process as plasmacatalytic. The results obtained make it possible to minimize the amount of catalyst used and propose an efficient way of producing hydrogen from kraft lignin waste.

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Section: Resultssupporting

confidence: 72%

Kraft Lignin Conversion into Energy Carriers under the Action of Electromagnetic Radiation

Zharova

Арапова

Konstantinov

et al. 2019

Journal of Chemistry

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“…As a catalytic system we used a porous carbon adsorbent based on gas coal, containing 0.5% Fe. This adsorbent is characterized by high dielectric loss and was used previously [19,20] for rapid elimination of discharged petroleum and toxic compounds [19,20].…”

Section: Methodsmentioning

confidence: 99%

“…The dielectric loss tangent of such systems reaches 8-12.7. To compare, for water this parameter is equal to 0.125 [7][8][9]. Microwave irradiation of such systems led to intensifi cation of breakdown effects and rapid plasma generation [6][7][8].…”

mentioning

confidence: 99%

Microwave-Assisted Plasma Catalytic Conversion of Tar to Hydrocarbon Products

et al. 2021

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Rapid conversion of tar from the Nizhnekamsk Oil Refi nery in the plasma catalytic mode stimulated by microwave radiation (MWR, 2.45 ± 0.05 GHz) was studied. A quartz reactor arranged in the installation waveguide was charged with tar mixed with 15 wt % catalytic system characterized by high dielectric loss. Microwave radiation gives rise to breakdown effects on the surface of the catalytic system, followed by the plasma generation. In the plasma catalytic mode at optimum temperature of the reaction zone, 650-700°С, the tar undergoes rapid degradation with the formation of gaseous (9.3 wt %) and liquid (75.7 wt %) products and of a carbon residue containing the catalytic system (15 wt %). The maximal tar conversion is 85% upon 20-min irradiation. Analysis by gas chromatography-mass spectrometry and IR spectroscopy shows that the tar conversion products consist mainly of alkanes, alkenes, alkynes, and alkyl-substituted aromatic hydrocarbons. The solid iron-containing residue separated from the tar hydrogenation products exhibits increased ability to absorb MWR and can be used repeatedly.

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“…In general, oil sludges have a higher oil hydrocarbon content compared to the metal content (Hu et al, 2013). These Nezhdbahadori et al, 2018), centrifugation (Wang et al, 2018), microwave irradiation (Tsodikov et al, 2016), and surfactant enhanced oil recovery (Duan et al, 2018, Liu et al, 2018. The implications of using an oil recovery technique is that the recovered oil can be reused as feedstock for fuel production (Giles, 2010, Liu et al, 2011, Hu et al, 2015, Zhao et al, 2017.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of oil sludges from different sources before treatment: High-field nuclear magnetic resonance (NMR) in the determination of oil and water content

Ramírez

Kowalczyk

Collins

2019

Journal of Petroleum Science and Engineering

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potentially toxic elements (PTEs) are believed to come from oil additives (de Souza et al., 2014).da Silva et al. (2012) reported that the composition of oil sludge is about 30 to 90% water, 4 to 7% sediments, and to 60% oil. However, Saikia et al. (2003) stated that the typical composition of oil sludge is 30-50% water, 10-12% sediments and solids, 30-50% oil. Yang et al. (2005), Zhang et al. (2012), and Long et al. (2013 have agreed that oil sludge is usually composed of 30-70% water, 2 to 15% sediments and solids, and 30-90% oil. Moreover, Egazar'yants et al. (2015) mentioned that oil sludges can have approximately 10 to 56 wt.% organic materials, 30 to 85 wt.% water and 1 to 46 wt.% solids or sediments. This shows that there is no uniform agreement among authors on the detailed oil sludge composition. This is not surprising since each oil sludge composition is unique, and depends on the origin of the oil sludge (Viana et al., 2015). Consequently, the physicochemical characteristics vary according to the nature of the oil (Oliveira et al., 2015) and the formation process and storage of the oil sludge (Kadiev et al., 2015). Generally, the sediment content is less than the oil and water contents. The oil usually had higher aliphatic hydrocarbon percentages (40-60%) than the aromatic hydrocarbon percentages (25-40%) (Shie et al., 2004, Speight, 2006. This wide variation in the composition of oil sludges has significant implications on the characterisation of oil sludges because different procedures and methods have been applied to study different types of sludges (Heidarzadeh et al., 2010, Wang et al., 2010, Zhang et al., 2011, Jasmine and Mukherji, 2015. In turn, this is extremely relevant for quick decision-making purposes regarding the appropriate treatment of this waste. Currently, the treatment of oil sludges is aimed to either reduce the contaminants in the sludge or to recover the oil. The former includes some methods such as encapsulation (Johnson et al., 2015), bioremediation (Wang et al., 2016, Roy et al., 2018), and incineration (Gong et al., 2017 whereas the latter, the oil recovery methods, include freeze/thawing (Hu et al., 2015), solvent extraction (Hu et al., 2017, * These elements are potentially toxic elements (PTEs) (Shaheen et al., 2016).Values in bold are over the limit of the acceptable standards of landfilling of hazardous waste established by the European Union: As (25 µg•g -1 ), Cd (5), Cr (70), Cu (100), Ni (40), Pb (50), Zn (200) (Kriipsalu et al., 2008). The mean values with the standard deviation (in parentheses) are shown (n = 3).

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Utilization of petroleum residues under microwave irradiation

Cited by 27 publications

References 11 publications

Kraft Lignin Conversion into Energy Carriers under the Action of Electromagnetic Radiation

Kraft Lignin Conversion into Energy Carriers under the Action of Electromagnetic Radiation

Microwave-Assisted Plasma Catalytic Conversion of Tar to Hydrocarbon Products

Characterisation of oil sludges from different sources before treatment: High-field nuclear magnetic resonance (NMR) in the determination of oil and water content

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