Библиографическое описание:The Application of Fiber Ion Exchange Sorbents for Wastewater Treatment and Purification of Gas Mixtures : научное издание / I. Garipov, R. Khaydarov, O. Gapurova [et al.]. - Текст : непосредственный // Journal of Energy, Environmental & Chemical Engineering. - 2020. - Т. 5, № 1. - P. 10. - ISSN 2637-4331, DOI 10.11648/j.jeece.20200501.12.
Аннотация: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<sub>2</sub>NH<sub>2</sub>H<sub>2</sub>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 <sup>57</sup>Co, <sup>60</sup>Co, <sup>65</sup>Zn, <sup>89</sup>Sr, <sup>90</sup>Sr, <sup>134</sup>Cs, <sup>137</sup>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-<sup>32</sup>P, M-<sup>131</sup>I, M-<sup>99</sup>Mo+<sup>99m</sup>Tc, M-<sup>14</sup>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<sub>2</sub>, SO<sub>3</sub>, NH<sub>3</sub>, H<sub>2</sub>S, etc.
Источник:Journal of Energy, Environmental & Chemical Engineering
Выпуск:Т. 5, № 1
Номера страниц:10
Держатель оригинала документа:Department of Biotechnology, Siberian Federal University, Krasnoyarsk, Russia, Laboratory of Ecophysiology of Permafrost Systems, V. N. Sukachev Institute of Forest FRC KSC SB RAS, Krasnoyarsk, Russia, Laboratory of Interdisciplinary Technologies, Institute of Nuclear Physics, Uzbekistan Academy of Sciences, Tashkent, Uzbekistan
Количество экземпляров:
Твёрдая копия издания отсутствует в фонде библиотеки
