Application of ion-exchange materials with high specific surface area for solving environmental problems

Rustamov, M. K.; Gafurova, D. A.; Karimov, M.M.; Rustamova, N. M.; Bekchonov, D. Zh.; Mukhamediev, M. G.

doi:10.1134/s1070363214130106

Cited by 10 publications

(12 citation statements)

References 3 publications

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“…In the article, the authors 15 obtained an anion exchanger by modifying granular plastic PVC with polyethylenepolyamine (PEPA). Then, as a continuation of this work, 15,16 the resulting anion exchange resin was modified with phosphorous acid to obtain nitrogen and phosphorus‐containing polyampholyte. It is shown that the anion‐exchange resin and polyampholyte based on PVC have a macroporous morphological structure with high thermal and chemical stability 16 .…”

Section: Introductionmentioning

confidence: 99%

“…Then, as a continuation of this work, 15,16 the resulting anion exchange resin was modified with phosphorous acid to obtain nitrogen and phosphorus‐containing polyampholyte. It is shown that the anion‐exchange resin and polyampholyte based on PVC have a macroporous morphological structure with high thermal and chemical stability 16 . The resulting anion exchange resin was mainly used for desalting river waters for industrial enterprises.…”

Section: Introductionmentioning

confidence: 99%

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Sorption of cobalt (II) and chromium (III) ions to nitrogen‐ and sulfur‐containing polyampholyte on the basis of polyvinylchloride

Bekchanov

Kawakita

Mukhamediev

et al. 2021

Polymers for Advanced Techs

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In this article, we studied the process of obtaining nitrogen‐ and sulfur‐containing polyampholyte by chemical modification of sulphocation exchanger. Which is synthesized based on polyvinyl chloride (PVC), with polyethylenepolyamine. Besides, the PVC and synthesized ion exchange resins were characterized using different tools such as FT‐IR, scanning electron microscope, and energy‐dispersive X‐ray. Moreover, the synthesized polyampholyte was used as effective adsorbents for removing Co (II) and Cr (III) ions from aqueous solutions. The Freundlich isotherm and the pseudo‐second order kinetic model were more consistent with the removal of metal ions from aqueous solutions. In the case of Co (II) and Cr (III), the maximum adsorption capacity was 3.45 and 3.97 mmol g−1, respectively. The thermodynamic parameters of the sorption process of metal ions such as free energy (ΔG), enthalpy (ΔН), and entropy (ΔS) of the system were calculated. Furthermore, we find that the adsorption processes were spontaneous and chemisorption.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sorption of cobalt (II) and chromium (III) ions to nitrogen‐ and sulfur‐containing polyampholyte on the basis of polyvinylchloride

Bekchanov

Kawakita

Mukhamediev

et al. 2021

Polymers for Advanced Techs

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“…The specific surface area (SSA) directly relates to the physical properties of pulps, i.e., increasing SSA increases the fiber conformability (Mert et al 2014;Rustamov et al 2014). Figure 1 shows the SSA of pulps under different treatment conditions.…”

Section: Effect Of Treatment On the Specific Surface Area Of Pulpsmentioning

confidence: 99%

“…In addition, xylanase and ultrasonic waves were used to treat wheat straw pulping to achieve maximum reduction in lignin content (Dedhia et al 2012). Also, xylanase can increase the specific surface area (SSA) of fibers and thus improve the conformability (Rustamov et al 2014). Others have reported that the tensile strength of xylanase-treated pulps increased from 179.53 to 208.26 N (Zhuang et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-assisted Xylanase Treatment of Chemi-Mechanical Poplar Pulp

Jiang¹,

Yang²,

Wang³

et al. 2016

BioResources

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“…Due to the short time to achieve sorption equilibrium in the case of NSFM, the rate of sorption of harmful components from gaseous media is several times higher than the rate of similar processes on granular adsorbents, which allows to purify air using thin layers of material. Due to the low resistance to air flow, such materials are used to equip gas cleaning equipment, including respirators -personal respiratory protective equipment (PRPE) from toxic gases [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

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confidence: 99%

Non-Woven Ion-Exchange Fibrous Materials in Air Sanitary Cleaning

2021

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The review is devoted to non-woven sorption-filtering materials (NSFM) widely used equipment for gas cleaning from toxic gaseous and vaporous substances. The use of ion-exchange fibrous materials (IFM) as NSFM and the peculiarities of their preparation and structure have been analyzed. A lot of attention is paid to the mechanisms of chemisorption processes using IFM and to the role of water in their successful implementation. Individual options and some regularities of fibrous anionites, cationites, and polyampholytes interaction due to exchange reactions, neutralization, reduction-oxidation, complexation and precipitation with gaseous and vaporous substances are considered on specific examples.

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Application of ion-exchange materials with high specific surface area for solving environmental problems

Cited by 10 publications

References 3 publications

Sorption of cobalt (II) and chromium (III) ions to nitrogen‐ and sulfur‐containing polyampholyte on the basis of polyvinylchloride

Sorption of cobalt (II) and chromium (III) ions to nitrogen‐ and sulfur‐containing polyampholyte on the basis of polyvinylchloride

Ultrasound-assisted Xylanase Treatment of Chemi-Mechanical Poplar Pulp

Non-Woven Ion-Exchange Fibrous Materials in Air Sanitary Cleaning

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