Sorption of Organic Compounds by Carbon Sorbents from Kuzbass Coals

Zvekov, A. A.; Zykov, I. Yu.; Dudnikova, Yu. N.; Mihaylova, E. S.; Tsvetkov, V. E.; Ismagilov, Z. R.

doi:10.3103/s1068364x19060103

Cited by 8 publications

(1 citation statement)

References 10 publications

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“…By this, it is inferred that the modification of SC has significant potential for the removal of organic pollutants. However, phenolic compounds were removed from wastewater within 2 h after the subsequent increase in initial SC dosages signifying that adsorbent concentration and contact time were proportionally related [ 102 ]. The effect of initial adsorbate concentrate, adsorbent dosage, and the adsorbent–adsorbate contact time are related factors.…”

Section: Contaminant Adsorptionmentioning

confidence: 99%

Remediation with Semicoke-Preparation, Characterization, and Adsorption Application

Lartey-Young

2020

Materials

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Development of low-cost contaminant sorbents from industrial waste is now an essential aspect of the circular economy since their disposal continues to threaten ecological integrity. Semicoke (SC), a by-product generated in large quantities and described as solid waste from gasification of low-rank coal (LRC), is gaining popularity in line with its reuse capacity in the energy industry but is less explored as a contaminant adsorbent despite its physical and elemental carbon properties. This paper summarizes recent information on SC, sources and production, adsorption mechanism of polluting contaminants, and summarizes regeneration methods capable of yielding sustainability for the material reuse.

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Section: Contaminant Adsorptionmentioning

confidence: 99%

Remediation with Semicoke-Preparation, Characterization, and Adsorption Application

Lartey-Young

2020

Materials

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Magnetic sorbents based on Kuzbass long-flame coal

Zykov

Dudnikova

Tsvetkov

et al. 2021

J. Phys.: Conf. Ser.

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The paper investigates the textural characteristics of carbon sorbents obtained from Kuzbass coal of the LF grade. The sorbents were obtained by activation using ferric chloride, pre-impregnating the coal with an iron III chloride solution at a FeCl3/coal ratio of 1:7 g/g. Powder X-ray diffraction in sorbents proved the presence of the Fe3O4 phase of magnetite. The amount of magnetite in the sorbents varies within 7%. It is shown that sorbents obtained from coal activated with iron chloride have a sufficiently developed porous structure and significant microporosity. The measured values of the specific surface area of sorbents at an activation temperature of 800 °C reach 250 m2/g, and at 700 °C they are an order of magnitude lower. The total pore volume does not exceed 0.1 cm3/g with a micropore fraction of more than 70%.

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Determination of the parameters of the porous structure of carbon sorbents based on Kuzbass fossil coals by the method of low-temperature nitrogen adsorption

Dudnikova

Zykov

Созинов

et al. 2021

J. Phys.: Conf. Ser.

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The paper presents a technique for measuring the parameters of the porous structure of carbon sorbents obtained on the basis of Kuzbass fossil coals using an ASAP 2020 “Micromeritics” analyzer. The conditions for sample preparation were selected, which make it possible to record reproducible isotherms of low-temperature adsorption-desorption of nitrogen (77K) by the studied samples of carbon sorbents based on fossil coal of various grades. The textural characteristics of the porous structure of carbon sorbents were determined, such as the specific surface area (SBET, m2/g), the total pore volume (VΣ, cm3/g), the volume of micro-and mesopores (Vmicro, Vmeso, cm3/g) of the studied carbon sorbents. The textural characteristics of the porous structure of carbon sorbents were calculated from the obtained isotherms of low-temperature (77K) nitrogen adsorption-desorption. The textural characteristics of carbon sorbents were calculated by various methods implemented by the software of the ASAP 2020 analyzer “Micromeritics”: BET, Langmuir, DFT, t-Plot, Dubinin-Radushkevich, Dubinin-Astakhov, MP-method, Horvath-Kawazoe, BJH and Dollimore-Heal. The obtained values of the textural characteristics of the porous structure of carbon sorbents, calculated by various methods, make it possible to obtain more detailed information about the objects of study and to determine the scope of their further application.

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Sorption of Organic Compounds by Carbon Sorbents from Kuzbass Coals

Cited by 8 publications

References 10 publications

Remediation with Semicoke-Preparation, Characterization, and Adsorption Application

Remediation with Semicoke-Preparation, Characterization, and Adsorption Application

Magnetic sorbents based on Kuzbass long-flame coal

Determination of the parameters of the porous structure of carbon sorbents based on Kuzbass fossil coals by the method of low-temperature nitrogen adsorption

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