New complexing sorbents based on polyacrylonitrile fibres

Nemilova, T. V.; Emets, L. V.; Nemilov, V. N.; Nachinkin, O. I.

doi:10.1007/bf01061000

Cited by 2 publications

(2 citation statements)

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“…Of certain interest in this respect is betulin, a triterpene alcohol of the lupane series containing primary and secondary hydroxy and isopropenyl groups, which creates prerequisites for preparing linear thermoplastic polymers [1]. Since the isopropenyl group does not tend to polymerize because of its structural features, the probability of formation of branching polymers in this case will be low.…”

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confidence: 99%

Kinetics of Polycondensation of Betulin with Adipic Acid

2005

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Kinetics of Polycondensation of Betulin with Adipic Acid

2005

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“…The advantage of fiber ion-exchange sorbents over resin is their high sorption rate, effective regeneration and a low pressure drop value of the sorbent layer for purified water [2][3][4]. The specific surface of fiber sorbents is (2)(3).10 4 m 2 /kg, i.e. about 10 2 times greater than that of resin (10 2 m 2 /kg).…”

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The Application of Fiber Ion Exchange Sorbents for Wastewater Treatment and Purification of Gas Mixtures

Garipov¹,

Gapurova²,

Khaydarov³

et al. 2020

JEECE

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We developed a method of modifying the polyester material to produce ion exchange fiber sorbents. The production of cation exchange sorbents involved the treatment of polyester fibers with a 20-25% solution of NH 2 NH 2 H 2 O at 70-90°C and a 5% solution of NaOH at 40°C. Anion exchange sorbents were prepared by the treatment of cation exchange sorbents with a 1-5% solution of polyethylenimine at ambient temperature. These new types of sorbents can be used to remove radionuclides, heavy metal ions and organic contaminants from wastewater and drinking water. We studied main properties of these sorbents and their ability to remove 57 Co, 60 Co, 65 Zn, 89 Sr, 90 Sr, 134 Cs, 137 Cs and other radionuclides, heavy metal ions (Zn, Ni, Cu, Sb, Pb, Cd, Cr, U, etc.), organic molecules M (pesticides, phenols, dioxins, benzene, toluene, etc.), radio-labeled organic molecules M-32 P, M-131 I, M-99 Mo+ 99m Tc, M-14 C, etc. The static exchange capacity is 1-2 meq/g for cationic sorbents and 0.5-1 meq/g for anionic sorbents. The developed sorbents have been effective in removing low concentrations of contaminants from water (lower than 100-200 mg/L) as well as in purifying the gas mixtures from toxic and aggressive gases: SO 2 , SO 3 , NH 3 , H 2 S, etc.

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New complexing sorbents based on polyacrylonitrile fibres

Cited by 2 publications

References 1 publication

Kinetics of Polycondensation of Betulin with Adipic Acid

Kinetics of Polycondensation of Betulin with Adipic Acid

The Application of Fiber Ion Exchange Sorbents for Wastewater Treatment and Purification of Gas Mixtures

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