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 9 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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.

show abstract

Section: Contaminant Adsorptionmentioning

confidence: 99%

Remediation with Semicoke-Preparation, Characterization, and Adsorption Application

Lartey-Young

2020

Materials

View full text Add to dashboard Cite

show abstract

“…Carbon sorbents from coke fines can be used to extract gold ions from cyanide solutions, while the degree of gold extraction is 94% [18]. Activation of a fine fraction of sub-bituminous and highly volatile bituminous coal with an alkaline solution leads to the formation of carbon sorbents, which are not inferior to industrial sorbents in static capacity for phenol and chloroform [19]. Activated carbons obtained by alkaline treatment of highly volatile bituminous coals have a high adsorption capacity to CO 2 , which, with relatively low costs and availability of raw materials, is a promising method for obtaining sorbents for air purification [20].…”

Section: Introductionmentioning

confidence: 99%

Production of Activated Carbon from Sifted Coke and Determination of Its Physicochemical Characteristics

Ordabaeva,

Muldakhmetov,

Gazaliev

et al. 2023

Molecules

View full text Add to dashboard Cite

The possibility of obtaining effective coal sorbents from a low-liquid product of coke chemical production—coke fines—has been studied. To obtain a coal sorbent, coke fines with a size of ≤10 mm were crushed and sieved to obtain a fraction of 2–5 mm. The resulting fraction was activated in a specially designed reactor at 850 °C with steam treatment. Activation was carried out at different durations of the process: 60, 90, and 120 min. It was found that the sample obtained with a process duration of 120 min has the best indicator for the ability to remove phenol from aqueous solutions (74.94 mg/g) and methylene blue (145 mg/g). When cleaning tap water with the resulting carbon sorbent, there is a decrease in the content of calcium, sulfates, and bicarbonate and a decrease in total mineralization. Obtained activated carbon was studied by scanning electron microscopy, low-temperature nitrogen adsorption (BET), and FTIR spectroscopy. It was found that the resulting activated carbon has a porous structure consisting of meso- and macropores, and the specific surface value was ~301 m2/g. The presence of high-intensity absorption bands corresponding to acid functional groups has also been established.

show abstract

Magnetic sorbents based on Kuzbass long-flame coal

Zykov

Dudnikova

Tsvetkov

et al. 2021

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

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%.

show abstract

Sorption of Organic Compounds by Carbon Sorbents from Kuzbass Coals

Cited by 9 publications

References 10 publications

Remediation with Semicoke-Preparation, Characterization, and Adsorption Application

Remediation with Semicoke-Preparation, Characterization, and Adsorption Application

Production of Activated Carbon from Sifted Coke and Determination of Its Physicochemical Characteristics

Magnetic sorbents based on Kuzbass long-flame coal

Contact Info

Product

Resources

About