Compositional Fibers Based on Coal Tar Mesophase Pitch Obtained by Electrospinning Method

Imangazy, A. M.; Смагулова, Г. Т.; Kaidar, Bayan; Mansurov, Z. A.; Kerimkulova, A. R.; Umbetkaliev, K. A.; Zakhidov, Anvar A.; Vorobyev, P. B.; Jumadilov, Т. K.

doi:10.23939/chcht15.03.403

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…Scanning electron microscopy allows studying the morphology and topography of the sample at high resolution. Previous work in this area [22,23] showed that the optimal temperature for heat treatment of CT corresponds to a temperature of 400 °C. After heat treatment, coal tar passes from a viscous state to a condensed solid state.…”

Section: Physical and Chemical Properties Of Coal Tar Pitchmentioning

confidence: 99%

Carbon/NiO Compositional Fibers

Мансуров

Смагулова

Imash³

et al. 2022

Eurasian Chem. Tech. J.

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This article presents the results of the synthesis of carbon-NiO composite fibers. Fibers doped with NiO particles are of practical interest for applications in sensors, energy storage systems, photocatalysts, etc. Four-component initial fibers based on polyacrylonitrile (PAN), activated carbon (AC), coal tar pitch (CTP), and NiO particles were obtained. CTP was obtained by thermal treatment of coal tar, AC by carbonization of apricot kernels, NiO by solution combustion synthesis. PAN, CTP, and AC are a source of carbon, but each of them plays a specific role. PAN is the basis of carbon fibers and a fiber-forming material, CTP is a technogenic waste added to replace polymer particles, AC is an additive that could increase the carbon content and the porosity of the final fibers. The fibers were obtained using the electrospinning method, which makes it possible to use complex suspensions and obtain fibers of various diameters. PAN:CTP:AC:NiO fibers were obtained. Next, the processes of stabilization and carbonization of the fibers were carried out. The fibers at each stage were examined by scanning electron microscopy and EDAX. The result of the synthesis was carbon/NiO fibers with a diameter of 100‒300 nm. The resulting fibers are promising for practical applications due to the one-dimensional structure of the fibers and better adhesion between the fiber and NiO particles.

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Section: Physical and Chemical Properties Of Coal Tar Pitchmentioning

confidence: 99%

Carbon/NiO Compositional Fibers

Мансуров

Смагулова

Imash³

et al. 2022

Eurasian Chem. Tech. J.

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“…Various adsorbents, such as clays [ 21 , 22 , 23 ], functionalized magnetic chitosan nanoparticles [ 24 , 25 , 26 ], carbon adsorbents [ 27 , 28 , 29 , 30 ], biosorbents [ 31 , 32 , 33 ], hydrogels [ 34 , 35 , 36 , 37 , 38 ], and ion exchangers [ 39 , 40 , 41 , 42 ], can be used to recover various metal ions from aqueous solutions. The recovered metals have wide applications in catalysis, pyrotechnics, coal chemistry, and other fields [ 43 , 44 , 45 , 46 , 47 , 48 ]. However, the practical application of recently developed polymeric sorbents has been limited [ 49 , 50 , 51 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers

Jumadilov,

Khimersen,

Haponiuk

et al. 2024

Polymers

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The growing demand for rare earth elements (REE) requires the search for economically viable materials to efficiently recover REE from various solutions. Our research aims to investigate the potential of using a combination of the ion exchangers Lewatit CNP LF (in H+ form) and AV-17-8 (in OH− form) as an interpolymer system, “Lewatit CNP LF@AV-17-8” (X:Y), with varying mass ratios of X:Y to enhance the sorption efficiency of lutetium ions from nitrate solution. During the study, we used a range of analytical methodologies, including gravimetry, ultraviolet-visible (UV-VIS) spectroscopy, and inductively coupled plasma optical emission spectroscopy (ICP-OES). Our findings demonstrate that the interpolymer system “Lewatit CNP LF@AV-17-8” (X:Y), with a mass ratio of 4:2, exhibited a significantly enhanced sorption rate of Lu3+ ions (42%) compared to the individual Lewatit CNP LF (6:0) (25%) and the individual AV-17-8 (0:6) (21%) over a 48 h period. Moreover, this interpolymer system has demonstrated notable conformity to the Freundlich adsorption model, highlighting its performance as an effective sorbent for lutetium (III) ions. Notably, our study presents a novel utilization of the interpolymer system “Lewatit CNP LF@AV-17-8” (4:2), with an adsorption capacity of 221.05 mg/g, to enhance the recovery of lutetium ions. The research findings demonstrate its potential for enhancing the recovery of REE.

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“…Of these, sorption methods have recently gained the lead, since they are more environmentally friendly and involve fewer technological cycles [ 17 ]. These adsorption techniques use diverse materials, such as biological materials, activated carbons, and activated polymers, which have recently aroused increased interest in the recovery of various metals from aqueous media [ 18 , 19 , 20 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Selective Sorption of Cerium Ions from Uranium-Containing Solutions by Remotely Activated Ion Exchangers

et al. 2023

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This study investigated the effect of the remote activation of the ion exchangers Amberlite IR120 (H+ form) and AV-17-8 (OH− form) in aqueous media to increase the sorption activity of the interpolymer system “Amberlite IR120H:AV-17-8” (X:Y, molar ratio of ionic groups) towards cerium ions from uranium-containing solutions. The sorption properties of the above-mentioned interpolymer system with molar ratios X:Y of 6:0, 5:1, 4:2, 3:3, 2:4, 1:5, and 0:6 were studied using the methods of conductometry, gravimetry, and inductively coupled plasma–optical emission spectrometry. The presented research revealed the dependence of the sorption activity of the interpolymer system “Amberlite IR120H:AV-17-8” (X:Y) on the acidity of the solution. At pH 2.0, the highest cerium ion sorption degree from the model solution (containing both cerium and uranium ions) by the interpolymer system “Amberlite IR120H:AV-17-8” (4:2) was 56% after 48 h of interaction, whereas the cerium ion sorption degrees by raw Amberlite IR120H (6:0) and raw AV-17-8 (0:6) were 30% and 0%, respectively. The increased sorption ability of the interpolymer system “Amberlite IR120H:AV-17-8” (4:2) might be associated with the achievement of the highest ionization degree by this system remotely activated in an aqueous medium. Moreover, the cerium ion desorption study demonstrated a 60% degree of desorption using 2M nitric acid as a desorbing agent (eluent). The obtained results demonstrate the potential of using the remote interaction effect for the activation of the ion exchangers in aqueous media as an interpolymer system for increased cerium ion sorption from uranium-containing solutions.

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Compositional Fibers Based on Coal Tar Mesophase Pitch Obtained by Electrospinning Method

Cited by 5 publications

References 17 publications

Carbon/NiO Compositional Fibers

Carbon/NiO Compositional Fibers

Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers

Selective Sorption of Cerium Ions from Uranium-Containing Solutions by Remotely Activated Ion Exchangers

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