New carbon sorbents

Perederii, M. A.; Noskova, Yu. A.; Karaseva, M. S.; Konovalov, P. N.

doi:10.3103/s0361521909060056

Cited by 8 publications

(3 citation statements)

References 2 publications

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“…Для промышленного производства активных углей чаще всего используют древесину, каменный уголь, бурый уголь, торф, скорлупу кокосовых орехов, причем до 70% сырьевой базы составляют ископаемые угли, преимущества которых заключаются в высокой степени углефикации, высокой пористости, больших запасах и относительно низкой стоимости [4]. Тем не менее, в качестве перспективного сырья для получения активных углей могут быть рассмотрены продукты переработки древесины, торф, различные отходы растительного происхождения [1,[5][6][7][8][9][10].…”

Section: в процессах производства сельскохозяйственной продукции накаunclassified

“…В работах М.А. Передерий [5] и Г.Б. Камбаровой [6] проведено комплексное исследование косточки маслин и скорлупы грецких орехов как сырья для переработки в углеродные сорбенты.…”

Section: в процессах производства сельскохозяйственной продукции накаunclassified

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Obtaining Granulated Active Carbon From Wastes of Vegetable Raw Materials

Фарберова¹,

Тиньгаева²,

Chuchalina³

et al. 2018

IVUZKKT

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In the processes of agricultural products production a sufficiently large amount of solid wastes which contain high molecular weight hydrocarbons such as lignin, cellulose, etc. is accumulated. However, such wastes are rarely used to produce active carbons, and only technologies with their use for obtaining crushed or powdered sorption materials are known. In the industrial production of granular activated carbon the fossil coals are mainly used. In this work, research was conducted on the development of methods for producing granulated active carbon of spherical form. And the characteristics of their porous structure were studied. The process of granulation of the spherical shape of sorbents was carried out by liquid dispersing composition containing pulverized wastes of vegetable origin and a binder. As plant materials we used walnut shells and peanuts, apricot seed, buckwheat husk, and for comparison, the dust caking coal of SSOM brand. As a binder a phenol formaldehyde resin was used. To remove volatile substances of plant the raw material was subjected to preliminary heat treatment without access of air in a muffle furnace at optimum temperature which was determined by thermogravimetry. Crushed carbon material was mixed with a binder component in a weight ratio of 1:5 and was sprayed into a solution of sulfuric acid with a concentration of 30-35% for the curing of the pellets. The obtained pellets were soaked in acid solution for 24-30 h, were separated from the liquid, were washed with distilled water to pH = 5-6, and were dried first in air and were subjected to heat treatment. The result of the research shows the possibility of regulation of characteristics of the porous structure of the spherical granular activated carbon depending on the plant material. The resulting spherical granules of activated carbon have developed system of micro - and mesopores. Depending on the type of plant waste the received active carbon has a radius of micropores in the range of (0.527-0.635) nm and maximum sorption volume varied from 0.46 to 0.71 cm3/g.Forcitation:Farberova E.A., Tingaeva E.A., Chuchalina A.D., Kobeleva A.R., Maximov A.S. Obtaining granulated active carbon from wastes of vegetable raw materials. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 3. P. 51-57

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Section: в процессах производства сельскохозяйственной продукции накаunclassified

Obtaining Granulated Active Carbon From Wastes of Vegetable Raw Materials

Фарберова¹,

Тиньгаева²,

Chuchalina³

et al. 2018

IVUZKKT

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“…Here we report the results of rapid conversion of tar in the microwave-assisted plasma catalytic mode in the presence of granules of iron-containing crushed activated carbon prepared from natural gas coal; these granules were used as a support [18].…”

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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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Rapid Conversion of Methane to Hydrogen Stimulated by Microwave Irradiation on the Surface of a Carbon Adsorbent

et al. 2021

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The paper presents the results on the rapid production of H2 from CH4 by its direct decomposition in a plasma-catalytic mode stimulated by microwave irradiation (MWI) at 600°C. Methane was passed through a bed of iron-containing carbon adsorbent obtained from gas coal characterized by a large dielectric loss tangent. Under MWI, intense breakdown effects with plasma generation appear on the surface of the iron–carbon system. Methane in the plasma converts to hydrogen and carbon. A method has been developed for the rapid regeneration of the catalyst by water vapor with the removal of carbon under microwave stimulation. Short-cycle experiments have shown that the catalytic system provides high conversions of methane and its almost complete regeneration.

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New carbon sorbents

Cited by 8 publications

References 2 publications

Obtaining Granulated Active Carbon From Wastes of Vegetable Raw Materials

Obtaining Granulated Active Carbon From Wastes of Vegetable Raw Materials

Microwave-Assisted Plasma Catalytic Conversion of Tar to Hydrocarbon Products

Rapid Conversion of Methane to Hydrogen Stimulated by Microwave Irradiation on the Surface of a Carbon Adsorbent

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