Technical and economical justification of the use of Vion chemisorptive fibres

Zverev, M. P.

doi:10.1007/bf00550794

Cited by 1 publication

(1 citation statement)

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“…Test results are given in Figure 6. Nonwoven cloth weighing 1 kg/m 2 made of analogous fibers is widely used in filters with an output of 3,000 to 25,000 m 3 /h for removal of SO 2 , SO 3 , HF, HCl, Cl 2 , NH 3 , H 2 S, NH 2 -NH 2 and other gases and liquid aerosols, the most common atmospheric pollutants [10][11][12][13][14][15].…”

Section: Figure 1 Kinetics Of Saponification Of the Fibers In A 5% Na...mentioning

confidence: 99%

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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Section: Figure 1 Kinetics Of Saponification Of the Fibers In A 5% Na...mentioning

confidence: 99%